Beam distribution detection device and beam distribution detection method

Abstract

The present disclosure relates to a dedicated beam distribution detection device and method. The dedicated beam distribution detection device includes at least one detector module, which includes a linear array detector and a logic control module. The linear array detector is configured to collect beam data according to instructions from the logic control module; the logic control module is configured to process the beam data and determine whether the beam state meets predetermined requirements based on the processed beam data; if the beam state does not meet the predetermined requirements, the beam state is adjusted. The present disclosure utilizes a linear array detector, which is simple to use and significantly reduces debugging time.

Description

Technical Field

[0001] The present disclosure relates to the field of beam distribution detection, and in particular to a dedicated beam distribution detection device and a beam distribution detection method. Background Art

[0002] In related technologies, the radiation beam generated by a radiation source (such as an X-ray machine, an accelerator, etc.) is in the shape of a cone with a large opening angle. After being restricted by a collimator, the angle of the emitted beam is limited to a specific angle.

[0003] To achieve an ideal beam state, it is necessary to adjust the relative positions of the radiation source, collimator, and detector, referred to as "three points in a straight line." That is, the beam just covers the sensitive area of ​​the detector and the beam is incident vertically on the sensitive area of ​​the detector. There are two debugging methods for related technologies:

[0004] First, utilize the detectors in the system. The collimator and detector are fine-tuned incrementally. After each position adjustment, beam data from the system detector is collected. The results are compared and processed to determine the optimal relative position. This method is inefficient because the information collected after a single adjustment is limited. Numerous fine-tuning adjustments are required to obtain sufficient data, often consuming significant labor.

[0005] Second, an additional detector is placed between the detector and the beam. This detector measures the intensity distribution over a wide range of the beam at once. The distribution data can be used to infer the direction and magnitude of the required position adjustment. After the adjustment, the detector is measured again to determine whether further adjustment is needed. Summary of the Invention

[0006] The detection method of placing an additional detector between the detector and the beam can obtain more information in a single adjustment measurement than the method of detecting with the detector in the system, so it requires fewer adjustments and has higher debugging efficiency. The additional detector placed between the detector and the beam can be divided into three types according to the specific detector type: single point detector, linear array detector, and area array detector:

[0007] The single-point detector needs to be scanned in the direction perpendicular to the beam plane, and its scanning requires mechanical movement, so the single data acquisition time is relatively long.

[0008] The pixel arrangement direction of the linear array detector is perpendicular to the plane where the beam is located, and data acquisition can be completed in a shorter time.

[0009] Area array detectors can collect the two-dimensional distribution of the beam, providing richer data than linear array detectors. However, due to the large data volume, data collection and transmission time are long, making high-speed synchronous acquisition difficult. Furthermore, area array detectors have far more pixels than linear array detectors, and their cost is typically several or even dozens of times higher.

[0010] Taking into account the characteristics of the above technical solutions, the use of linear array detectors offers greater cost-effectiveness and flexibility, making them suitable for beam debugging of radiation equipment. However, there are currently no linear array detectors specifically designed for beam debugging on the market. Instead, general-purpose linear array detectors are used. Their usage is similar to that of system detectors, requiring them to be fixed between the beam and the system detector, powered by cables, and communicating with a controller or host computer. Their deployment and operation are relatively complex, requiring high technical and experience skills from the debugging personnel.

[0011] In view of at least one of the above technical problems, the present disclosure provides a dedicated beam distribution detection device and a beam distribution detection method, which uses a linear array detector, is simple to use, and greatly saves debugging time.

[0012] According to one aspect of the present disclosure, a dedicated beam distribution detection device is provided, comprising at least one detector module, the detector module including a linear array detector and a logic control module, wherein:

[0013] The linear array detector is configured to collect beam data according to the instruction of the logic control module;

[0014] The logic control module is configured to process the beam data and determine whether the beam state meets the predetermined requirements based on the processed beam data; if the beam state does not meet the predetermined requirements, adjust the beam.

[0015] In some embodiments of the present disclosure, the logic control module is further configured to adjust the beam by adjusting the position and size of the collimator when the beam state does not meet the predetermined requirements; and to end the measurement and turn off the detector module when the beam state meets the predetermined requirements.

[0016] In some embodiments of the present disclosure, the detector module further includes:

[0017] The ray window is configured to mark a sensitive area of ​​the linear array detector, wherein the sensitive area of ​​the linear array detector is used for aligning the position of the module and the beam.

[0018] In some embodiments of the present disclosure, the dedicated beam distribution detection device further includes an auxiliary mechanical device, and the auxiliary mechanical device includes an adsorption device, wherein:

[0019] The adsorption device is configured to fix the magnetic base on the surface of the arm by switching the magnetic base, and fix the detector module on the magnetic base.

[0020] In some embodiments of the present disclosure, the auxiliary mechanical device further includes a motion module, the motion module includes a translation stage and a translation stage driver, and the detector module further includes a drive interface, wherein:

[0021] The translation stage driver is connected to the drive interface;

[0022] The translation stage driver is configured to control the movement of the translation stage according to the signal instruction sent by the detector module.

[0023] In some embodiments of the present disclosure, the dedicated beam distribution detection device operates in at least one of an independent working mode, a synchronous working mode, a cascade working mode, and a motion scanning working mode.

[0024] In some embodiments of the present disclosure, the dedicated beam distribution detection device operates in at least one of a remote control working mode, a synchronous working mode, a cascade working mode, and a motion scanning working mode.

[0025] In some embodiments of the present disclosure, the detector module further includes a display module, which includes a display screen and a display control circuit, wherein:

[0026] a display screen configured to display control information, beam data, and screen prompt information;

[0027] The screen control button is configured to receive parameter setting information and display control information input by the operator according to the screen prompt information in the independent working mode, and send the parameter setting information and display control information to the logic control module for detecting the beam distribution.

[0028] In some embodiments of the present disclosure, the detector module further includes a communication module, wherein:

[0029] A communication module is configured to communicate with a host computer;

[0030] The communication module is configured to communicate with the host computer in the remote control working mode, receive the working parameters set by the host computer, send the working parameters to the logic control module, and return the data processed by the logic control module to the host computer.

[0031] In some embodiments of the present disclosure, the detector module further includes a trigger input interface, wherein:

[0032] A trigger input interface is configured to receive a trigger signal input from an external source;

[0033] The trigger input interface is configured to connect to the trigger output interface of the radiation source in the synchronous working mode and set the working parameters of the detector module; after receiving a trigger signal, it instructs the linear array detector to collect one or more beam data.

[0034] In some embodiments of the present disclosure, the detector module further includes a trigger input interface and a trigger output interface, wherein:

[0035] A trigger input interface is configured to receive a trigger signal input from an external source;

[0036] A trigger output interface is configured to send a trigger signal to other modules or devices;

[0037] In the cascade working mode, the beam distribution dedicated detection device includes multiple detector modules, which are cascaded through the trigger input interface and the trigger output interface to enable the multiple detector modules to simultaneously collect data at different positions of the beam.

[0038] In some embodiments of the present disclosure, in a motion scanning operating mode, the detector module is connected to the motion module;

[0039] The detector module is configured to send a command to move the motion module a certain distance after collecting data once or multiple times;

[0040] The motion module is configured to make the detector sensitive area cover a two-dimensional area through multiple displacements, and to splice the beam data collected multiple times to reconstruct the two-dimensional beam position distribution data.

[0041] In some embodiments of the present disclosure, a linear array detector includes a detection array and an analog-to-digital conversion circuit, wherein:

[0042] The detection array is a single row of one-dimensional pixels.

[0043] In some embodiments of the present disclosure, the detection array is at least one of a dual-energy detector and a multi-row detector, wherein: the dual-energy detector is a structure in which two layers of detectors are stacked, serving as a low-energy detector and a high-energy detector respectively; the multi-row detector is a quasi-two-dimensional array composed of multiple rows of linear arrays.

[0044] According to another aspect of the present disclosure, a beam distribution detection method is provided, comprising:

[0045] Fixing a detector module in the beam irradiation area, wherein the detector module is a detector module of the dedicated beam distribution detection device as described in any of the above embodiments;

[0046] When the beam is out, collect beam data;

[0047] Processing beam data;

[0048] judging whether the beam state meets predetermined requirements according to the processed beam data;

[0049] When the beam current state does not meet the predetermined requirement, the beam current is adjusted.

[0050] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0051] When the beam state meets the predetermined requirements, the measurement is ended and the detector module is turned off.

[0052] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0053] When the beam state does not meet the predetermined requirements, the beam is adjusted by adjusting the position and size of the collimator; and then the step of collecting beam data is performed when the beam is emitted.

[0054] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0055] Setting the working mode of the dedicated beam distribution detection device to at least one of an independent working mode, a synchronous working mode, a cascade working mode and a motion scanning working mode;

[0056] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0057] The working mode of the dedicated beam distribution detection device is set to at least one of a remote control working mode, a synchronous working mode, a cascade working mode and a motion scanning working mode.

[0058] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0059] In the independent working mode, the parameter setting information and display control information input by the operator according to the screen prompt information are received through the screen control button, and the parameter setting information and display control information are sent to the logic control module to detect the beam distribution.

[0060] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0061] In the remote control working mode, the communication module receives the working parameters set by the host computer, sends the working parameters to the logic control module, and returns the data processed by the logic control module to the host computer.

[0062] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0063] In the synchronous working mode, the trigger input interface is connected to the trigger output interface of the radiation source, and the working parameters of the detector module are set; after receiving a trigger signal, the linear array detector is instructed to collect beam data once or multiple times.

[0064] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0065] In the cascade working mode, multiple detector modules are cascaded through the trigger input interface and the trigger output interface to enable multiple detector modules to simultaneously collect data at different positions of the beam.

[0066] In some embodiments of the present disclosure, the beam distribution detection method further includes:

[0067] In motion scanning working mode, connect the detector module to the motion module;

[0068] After collecting data once or multiple times, the detector module sends a command to move the motion module a certain distance;

[0069] The motion module makes multiple displacements so that the detector sensitive area covers a two-dimensional area, and splices the beam data collected multiple times to reconstruct the two-dimensional beam position distribution data.

[0070] The present invention adopts a linear array detector, which is easy to use and greatly saves debugging time. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0072] Figure 1 Schematic diagrams of some embodiments of the dedicated beam distribution detection device disclosed in the present invention.

[0073] Figure 2 Schematic diagram of some embodiments of the external detector measurement method disclosed in the present invention.

[0074] Figure 3 Schematic diagrams of some embodiments of the detector module disclosed herein.

[0075] Figure 4a and Figure 4b Schematic diagrams of some embodiments of the fan-shaped beam structure disclosed herein.

[0076] Figure 5a and Figure 5b Schematic diagrams of some embodiments of the pencil beam structure disclosed herein.

[0077] Figure 6 Schematic diagram of beam intensity distribution in some embodiments of the present disclosure.

[0078] Figure 7 This is a schematic diagram of the alignment of three points in a straight line in some embodiments of the present disclosure.

[0079] Figure 8 Schematic diagram of the detector sensitive area and beam distribution area in some embodiments of the present disclosure.

[0080] Figure 9 Schematic diagram of the module interface of the detector module in some embodiments of the present disclosure.

[0081] Figure 10 This is a schematic diagram of the motion scanning working mode of the dedicated beam distribution detection device in some embodiments of the present disclosure.

[0082] Figure 11 Schematic diagram of a typical pencil beam image obtained in beam motion scanning mode in some embodiments of the present disclosure.

[0083] Figure 12 Schematic diagram of the combination of working modes of a dedicated beam distribution detection device in some embodiments of the present disclosure.

[0084] Figure 13 Schematic diagram of some embodiments of the beam distribution detection method disclosed in the present invention.

[0085] Figure 14 Schematic diagrams of other embodiments of the beam distribution detection method disclosed in the present invention. DETAILED DESCRIPTION

[0086] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0087] Unless specifically stated otherwise, the relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0088] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0089] Technologies, methods and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods and equipment should be considered part of the authorization specification.

[0090] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0091] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0092] Figure 1 Schematic diagram of some embodiments of the beam distribution detection device disclosed in the present invention. Figure 1 As shown, the dedicated beam distribution detection device disclosed herein may include at least one detector module 100 and an auxiliary mechanical device 200, wherein:

[0093] The auxiliary mechanical device 200 is used to fix the detector module 100 in the beam irradiation area so that the plane where the beam is located is perpendicular to the axis of the linear array detector.

[0094] The present disclosure adopts an external detector measurement method to detect beam distribution. Figure 2 Schematic diagrams of some embodiments of the external detector measurement method disclosed herein. The above embodiments of the present disclosure place an additional detector between the detector and the beam, and use this detector to measure the intensity distribution of the beam over a wide range at one time. The external detector has a large sensitive area that exceeds the beam distribution area. The above embodiments of the present disclosure can infer the direction and magnitude of the required position adjustment based on the distribution data (e.g., the beam distribution curve), and then measure again after adjustment to determine whether further adjustment is required.

[0095] In some embodiments of the present disclosure, the auxiliary mechanical device may include an adsorption device, a motion module, and a connector, wherein:

[0096] The adsorption device is configured to fix the magnetic base on the surface of the arm by switching the magnetic base, and fix the detector module 100 on the magnetic base, so that the position of the module can be flexibly adjusted according to needs.

[0097] In some embodiments of the present disclosure, the adsorption device mainly refers to magnetic adsorption, and the equipment arm is made of materials with magnetic induction such as iron and stainless steel.

[0098] In some embodiments of the present disclosure, the motion module includes a translation stage (screw) and a translation stage driver, and the detector module further includes a drive interface, wherein:

[0099] The translation stage driver is connected to the driving interface.

[0100] The translation stage driver is configured to control the movement of the translation stage (eg, forward and backward movement) according to the signal instruction sent by the detector module.

[0101] Figure 3 Schematic diagram of some embodiments of the detector module disclosed herein. Figure 3 As shown, the detector module 100 of the present disclosure may include a linear array detector 101 and a logic control module 102, wherein:

[0102] The linear array detector 101 is configured to collect beam data according to the instruction of the logic control module.

[0103] The logic control module 102 is configured to process the beam current data and determine whether the beam current state meets the predetermined requirements based on the processed beam current data; if the beam current state does not meet the predetermined requirements, adjust the beam current.

[0104] In some embodiments of the present disclosure, the logic control module 102 can also be configured to adjust the beam by adjusting the position and size of the collimator when the beam state does not meet the predetermined requirements; and end the measurement and turn off the detector module when the beam state meets the predetermined requirements.

[0105] In some embodiments of the present disclosure, the radiation beam collimator is divided into a slit shape and a micro-hole shape according to the shape of the area from which the beam can be emitted.

[0106] Figure 4a and Figure 4b Schematic diagrams of some embodiments of the fan-shaped beam structure disclosed herein. Figure 4a For top view, Figure 4b is the front view. Figure 4a and Figure 4b As shown, the beam emitted by the slit-shaped collimator is a fan-shaped beam, which is commonly used in baggage inspection equipment, CT (Computed Tomography) equipment, vehicle / container inspection equipment, etc.

[0107] Figure 5a and Figure 5b Schematic diagrams of some embodiments of the pencil beam structure disclosed herein. Figure 5a For top view, Figure 5b is the front view. Figure 5a and Figure 5b As shown in the figure, the beam emitted by the micro-aperture collimator is a pencil beam, which is often used in backscatter detection equipment.

[0108] The above embodiments of the present disclosure are mainly applied to the detection of fan beams, and can also be used for the detection of pencil beams. The technical solutions of the above embodiments of the present disclosure assume the use of fan beams by default, and the parts different from the pencil beams will be separately proposed.

[0109] Figure 6 Schematic diagram of beam intensity distribution in some embodiments of the present disclosure. Figure 6 As shown, the distribution range of the beam limited by the collimator at the detector is small, the raised part in the middle is the signal generated by the beam, and there is basically no beam signal on both sides.

[0110] Figure 7 Schematic diagram of alignment of three points in a straight line in some embodiments of the present disclosure. Figure 7 As shown, the logic control module 102 can be used to adjust the relative positions of the radiation source, collimator, and detector, referred to as "three points on a straight line", so that the beam state meets the predetermined requirements. For a fan-shaped beam, multiple three-point collinear conditions must be met.

[0111] In some embodiments of the present disclosure, the predetermined requirement may be that the beam just covers the sensitive area of ​​the detector and the beam vertically enters the sensitive area of ​​the detector.

[0112] Figure 8 Schematic diagram of the detector sensitive area and beam distribution area in some embodiments of the present disclosure. Figure 8 As shown, the dotted line is the effective irradiation area of ​​the beam (viewpoint along the incident direction of the beam). Ideally, the plane where the fan beam is located should be perpendicular to the sensitive surface of the detector, and the beam distribution area should coincide with the sensitive area of ​​the detector, and should not be too large or too small. If the beam distribution area is larger than the sensitive area of ​​the detector, the excess beam will not be converted into an effective signal, and unnecessary radiation dose will be increased. If the beam distribution area is smaller than the sensitive area of ​​the detector, some of the detector's sensitive areas will not have beam incidence, which may cause a decrease in the signal-to-noise ratio and an increase in inconsistency. In addition, in the actual debugging of related technologies, there are still problems such as the beam deviating from the sensitive area of ​​the detector and the beam obliquely incident on the sensitive area of ​​the detector.

[0113] In some embodiments of the present disclosure, Figure 3 As shown, the detector module 100 of the present disclosure may include a linear array detector 101, a logic control module 102, a communication module 103, a power supply module 104 and a display module 105, wherein:

[0114] like Figure 3 As shown, the linear array detector 101 , the logic control module 102 , the communication module 103 , the power supply module 104 and the display module 105 can be packaged in one box.

[0115] The linear array detector 101 is configured to convert beam radiation into electrical signals, which are then converted into digital signals. The magnitude of the digital signals represents the intensity of the beam distribution at the corresponding pixel. Based on commands from the logic control module 102, the linear array detector 101 sets parameters such as acquisition time, gain, bit depth, and trigger time, acquires signals, and transmits them back to the logic control module 102.

[0116] In some embodiments of the present disclosure, the linear array detector 101 may include a detection array and an analog-to-digital conversion circuit 106, wherein:

[0117] In some embodiments of the present disclosure, the detection array is a single-row one-dimensional pixel arrangement, that is, a (1×N array) ray detection array.

[0118] In other embodiments of the present disclosure, the detection array is at least one of a dual-energy detector and a multi-row detector.

[0119] In some embodiments of the present disclosure, a dual-energy detector comprises two stacked layers, one serving as a low-energy detector and the other as a high-energy detector. The advantage of a dual-energy detector is that it can obtain beam energy information. Generally speaking, beam debugging primarily focuses on the beam's positional distribution, while energy information is rarely required. Therefore, dual-energy detectors increase cost, size, and weight.

[0120] In some embodiments of the present disclosure, the multi-row detector is a quasi-two-dimensional array composed of multiple rows of linear arrays (for example, 2×N, 3×N or more). The advantage of the multi-row detector is that in the motion scanning working mode, the area covered by a single displacement is larger and the number of displacements required is fewer. Since the time consumed by mechanical movement accounts for the largest proportion in the entire scanning process, the fewer displacements of the multi-row detector can reduce the scanning time. In most debugging scenarios, the motion scanning working mode is not needed, so its demand is relatively weak, and the multi-row detector will increase the cost and volume and weight.

[0121] In some embodiments of the present disclosure, the logic control module 102 may include logic circuits (e.g., FPGA (Field Programmable Gate Array), ARM (Advanced RISC Machine), etc.) and storage circuits (e.g., RAM (Random Access Memory), SD (Secure Digital Memory Card), etc.). The logic control module 102 can perform general calculations and data storage, and is equipped with a module control system responsible for controlling the behavior of other modules.

[0122] In some embodiments of the present disclosure, the communication module 103 may include a wired communication module and a wireless communication module, which are used to communicate with the host computer, receive commands from the host computer and send them to the logic control module 102, and return data processed by the logic control module 102 to the host computer. Wired communication uses common interfaces such as Ethernet, USB (Universal Serial Bus) or HDMI (High Definition Multimedia Interface). Wireless communication uses common wireless communication modules such as WiFi and Bluetooth.

[0123] In some embodiments of the present disclosure, the host computer may be an industrial computer, a PC, a tablet computer, etc.

[0124] In some embodiments of the present disclosure, Figure 3 As shown, the power supply module 104 may include a power interface and a battery for powering each module.

[0125] In some embodiments of the present disclosure, the battery may be a rechargeable battery. The power interface is connected to a low-voltage DC external power source to charge the rechargeable battery. In the absence of an external power source, the module is powered by the rechargeable battery.

[0126] In other embodiments of the present disclosure, the battery may be a disposable battery. Due to the high power consumption of the module (when the screen is always on), the power of a general disposable battery is small and the sustainable working time is short.

[0127] Display module 105 includes a display screen and display control circuitry, used to display basic navigation control and collected data (such as beam position distribution curves). The displayed results are provided by the logic control module. Generally speaking, the display screen has low power consumption, and parameters such as display time and brightness can be controlled according to actual conditions.

[0128] The above-mentioned embodiment of the present disclosure proposes a detection device dedicated to measuring radiation beam distribution. Based on a linear array detector, it combines multiple functional modules to be packaged into an independently operating module (detector module), and cooperates with other accessories (auxiliary mechanical devices) to form a complete measurement device.

[0129] Figure 9 FIG. 1 is a schematic diagram of the module interface of the detector module in some embodiments of the present disclosure. Figure 9As shown, the detector module of the present disclosure may have a series of physical interfaces on its housing or panel for device connection and user interaction. The physical interfaces may include a power supply interface 107, a communication interface 108, a trigger input interface 109, a trigger output interface 110, a drive interface 111, a ray window 112, a screen window (display screen) 113, a power switch 114, a screen control button 115, a mechanical interface 116, and the like, wherein:

[0130] The power supply interface 107 can be used to connect to an external DC low-voltage power supply to power the detector module and charge the rechargeable battery.

[0131] The communication interface 108 may be a USB or Ethernet connector for transmitting digital signals.

[0132] The trigger input interface 109 and the trigger output interface 110 may be radio frequency coaxial connectors such as SMA and MCX.

[0133] The trigger input interface 109 and the trigger output interface 110 are used to transmit trigger signals.

[0134] The trigger input interface 109 is used to receive a trigger signal input from an external source.

[0135] The trigger output interface 110 is used to send a trigger signal to other modules or devices.

[0136] The drive interface 111 can be a multi-core connector for sending and receiving electrical signals to drive other devices. For example, the drive interface 111 can be connected to the translation stage (screw) driver in the motion module to control the forward and backward movement of the translation stage.

[0137] The ray window 112 is configured to mark the sensitive area of ​​the linear array detector 101 , wherein the sensitive area of ​​the linear array detector 101 is used for aligning the position of the module and the beam.

[0138] The screen window 113 may be a display screen of the display module 105 , and is used to display control information, beam data, and screen prompt information.

[0139] The power switch 114 can be used to control the start and stop of the detector module.

[0140] The screen control button 115 can be used to set parameters and control the display according to the screen prompt information.

[0141] The mechanical interface 116 includes a mounting hole 1161 and a tripod interface 1162. The mounting hole 1161 and the tripod interface 1162 are left on the module base plate for attachment or tripod mounting.

[0142] In some embodiments of the present disclosure, the beam distribution detection device operates in at least one of an independent operation mode, a synchronous operation mode, a cascade operation mode, and a motion scanning operation mode. That is, the above four modes can be used in combination to form multiple composite operation modes.

[0143] In other embodiments of the present disclosure, the dedicated beam distribution detection device operates in at least one of a remote control mode, a synchronous mode, a cascade mode, and a motion scanning mode. That is, the above four modes can be used in combination to form multiple composite operating modes.

[0144] In some embodiments of the present disclosure, the independent working mode and the remote control working mode are mutually exclusive.

[0145] In some embodiments of the present disclosure, the display screen (screen window 113) can be configured to display control information, beam data, and screen prompt information. Screen control buttons 115 can be configured, in standalone mode, to receive parameter setting information and display control information input by an operator based on screen prompt information and transmit the parameter setting information and display control information to the logic control module 102 for beam distribution detection.

[0146] In some embodiments of the present disclosure, in standalone operation mode, the operator leaves the beam irradiation area during beam emission. After the beam ceases emission, the operator returns to the scene and processes the beam data using the on-screen control buttons 115 on the detector module. The standalone operation mode of the present disclosure does not require complex equipment connection and deployment, and is simple to operate.

[0147] In some embodiments of the present disclosure, the communication module 103 is configured to communicate with a host computer in a remote control mode, receive the detector module's operating parameters set by the host computer, send the operating parameters to the logic control module 102, obtain beam data at the time of beam exit, and return the data processed by the logic control module 102 to the host computer. The remote control mode of the present disclosure can reduce the number of personnel traveling back and forth in the radiation area.

[0148] In some embodiments of the present disclosure, trigger input interface 109 can be configured to connect to the trigger output interface of the radiation source in synchronous operation mode and, by setting operating parameters of the detector module, such as delay time, integration time, and trigger count, instruct the linear array detector 101 to collect beam data one or more times upon receiving a trigger signal. The synchronous operation mode of the present disclosure is applicable to radiation sources operating in a pulsed mode.

[0149] In some embodiments of the present disclosure, in a cascade operating mode, a dedicated beam distribution detection device may include multiple detector modules, which are cascaded via trigger input interface 109 and trigger output interface 110 to achieve synchronous acquisition by the multiple detector modules. The cascade operating mode of the present disclosure enables multiple detector modules to simultaneously acquire data from different beam positions.

[0150] Figure 10 Schematic diagram of the motion scanning working mode of the beam distribution dedicated detection device in some embodiments of the present disclosure. Figure 10 As shown, in the motion scanning working mode, the detector module is connected to the motion module.

[0151] The detector module is configured to send a command to move the motion module a certain distance after collecting data once or multiple times, wherein the direction of displacement is perpendicular to the axis of the linear array detector, and the displacement distance is equal to the length of the sensitive area of ​​the detector along the displacement direction.

[0152] The motion module is configured to make the detector sensitive area cover a two-dimensional area through multiple displacements, and to splice the beam data collected multiple times to reconstruct the two-dimensional beam position distribution data.

[0153] Figure 11 Schematic diagram of a typical pencil beam image obtained in beam motion scanning mode in some embodiments of the present disclosure. The motion scanning working mode of the present disclosure can be applied to pencil beams and can obtain information such as the beam spot diameter and shape of the detector module.

[0154] Figure 12 This is a schematic diagram of the working mode combination of the beam distribution dedicated detection device in some embodiments of the present disclosure. Figure 12 In the embodiment, a combination of remote control working mode, synchronous working mode and cascade working mode can be used simultaneously. Figure 12 As shown, three detector modules are fixed at different locations within the fan-shaped beam irradiation area. Trigger interfaces are connected between the modules, and the trigger input of the first module is connected to the trigger output of the radiation source. The modules are connected to a host computer via wired or wireless communication. The host computer sets the detector module's measurement parameters and retrieves collected beam data. In this way, beam distribution information can be collected simultaneously at three beam locations.

[0155] The dedicated beam distribution detection device of the above embodiment of the present disclosure is a radiation beam position detection device.

[0156] The dedicated beam current distribution detection device of the above-mentioned embodiment of the present disclosure is simple to use. For simple and quick beam current measurements, it can be operated in standalone mode. In this mode, the detector module does not require an external power supply or communication with a host computer; basic beam current measurements can be performed using only the module's own on / off button, saving significant debugging time.

[0157] The beam distribution detection device described in the above-mentioned embodiment of the present disclosure is highly cost-effective. The material cost of the detector module primarily comes from the linear array detector. While its cost and size are slightly higher than those of single-point detectors, the difference is not significant. However, compared to area array detectors, its cost and size are significantly lower, while the two offer comparable performance.

[0158] The beam distribution detection device of the above embodiment of the present disclosure is flexible and versatile. The device implements multiple operating modes and can be combined with different operating modes according to different beam debugging requirements, meeting most application scenarios.

[0159] Figure 13 Schematic diagram of some embodiments of the beam distribution detection method disclosed in the present invention. Preferably, this embodiment can be performed by the dedicated beam distribution detection device disclosed in the present invention. Figure 13 As shown, the beam distribution detection method disclosed herein may include steps 131 to 135, wherein:

[0160] Step 131: fix the detector module in the beam irradiation area, wherein the detector module is any one of the above embodiments (for example Figures 1-12 The detector module of the beam distribution dedicated detection device described in any embodiment).

[0161] Step 132 : When the beam is out, collect beam data.

[0162] Step 133: Process the beam data.

[0163] Step 134 : Determine whether the beam state meets a predetermined requirement based on the processed beam data.

[0164] Step 135 : If the beam current state does not meet the predetermined requirement, adjust the beam current.

[0165] Figure 14 Schematic diagram of some other embodiments of the beam distribution detection method disclosed in the present invention. Preferably, this embodiment can be performed by the dedicated beam distribution detection device disclosed in the present invention. Figure 14 As shown, the beam distribution detection method disclosed herein may include steps 140 to 146, wherein:

[0166] Step 140: Measurement begins.

[0167] In some embodiments of the present disclosure, step 140 may include: setting module operating parameters: turning on the module switch, and setting the module operating parameters (triggering, communication, acquisition, etc.).

[0168] Step 141: The module is fixedly installed.

[0169] In some embodiments of the present disclosure, step 141 may include: using an auxiliary mechanical device to fix the module in the beam irradiation area so that the plane where the beam is located is perpendicular to the axis of the linear array detector.

[0170] Step 142: Collect beam data.

[0171] In some embodiments of the present disclosure, step 142 may include: when the beam is emitted, the module collects a signal generated by the beam and stores the signal in a logic control module.

[0172] Step 143: Process the beam data.

[0173] In some embodiments of the present disclosure, step 143 may include: extracting beam data after the beam stops emitting, and calculating and displaying the beam position distribution curve and other statistical information as needed.

[0174] Step 144: Determine whether the beam state meets the predetermined requirement based on the processed beam data. If the beam state does not meet the predetermined requirement, execute step 145; otherwise, if the beam state meets the predetermined requirement, execute step 146.

[0175] Step 145 , adjust the beam current; then execute step 142 .

[0176] In some embodiments of the present disclosure, in step 145 , the step of adjusting the beam current may include: adjusting the beam current by adjusting the position and size of a collimator.

[0177] Step 146: End the measurement and turn off the detector module.

[0178] In some embodiments of the present disclosure, the beam distribution detection method may further include: setting the working mode of the dedicated beam distribution detection device to at least one of an independent working mode, a synchronous working mode, a cascade working mode, and a motion scanning working mode;

[0179] In some other embodiments of the present disclosure, the beam distribution detection method may further include: setting the working mode of the dedicated beam distribution detection device to at least one of a remote control working mode, a synchronous working mode, a cascade working mode and a motion scanning working mode.

[0180] In some embodiments of the present disclosure, the beam distribution detection method may further include: in an independent working mode, receiving parameter setting information and display control information input by an operator according to screen prompt information through the screen control button 115, and sending the parameter setting information and display control information to the logic control module 102 for beam distribution detection.

[0181] In some embodiments of the present disclosure, the beam distribution detection method may further include: in a remote control working mode, receiving working parameters set by the host computer through the communication module 103, sending the working parameters to the logic control module 102, and returning the data processed by the logic control module 102 to the host computer.

[0182] In some embodiments of the present disclosure, the beam distribution detection method may further include: in a synchronous working mode, connecting the trigger output interface of the radiation source through the trigger input interface and setting the working parameters of the detector module; after receiving a trigger signal, instructing the linear array detector 101 to collect beam data once or multiple times.

[0183] In some embodiments of the present disclosure, the beam distribution detection method may further include: in a cascade working mode, cascading multiple detector modules through a trigger input interface and a trigger output interface to enable multiple detector modules to simultaneously collect data at different positions of the beam.

[0184] In some embodiments of the present disclosure, the beam distribution detection method may further include: in a motion scanning working mode, connecting the detector module to the motion module; after each acquisition of data one or more times, the detector module sends a command to move the motion module a certain distance; through multiple displacements, the motion module enables the detector sensitive area to cover a two-dimensional area, and splices the beam data acquired multiple times to reconstruct two-dimensional beam position distribution data.

[0185] The beam current distribution detection method disclosed in the above-mentioned embodiment is simple to operate. For simple and rapid beam current measurements, the detector module can be operated in standalone mode. In this mode, the detector module does not require an external power supply or communication with a host computer; basic beam current measurements can be performed using only the module's own on / off button, saving significant debugging time.

[0186] The beam distribution detection method of the above-mentioned embodiment of the present disclosure is highly cost-effective. The material cost of the detector module mainly comes from the linear array detector. Compared with single-point detectors, its cost and volume are slightly higher, but not significantly higher. However, compared with area array detectors, its cost and volume are significantly lower, and the performance of the two is comparable.

[0187] The beam distribution detection method of the above embodiment of the present disclosure is flexible and versatile. The above embodiment of the present disclosure can realize multiple working modes, and different working modes can be combined and used according to different beam debugging requirements, meeting most application scenarios.

[0188] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems) and computer program products according to embodiments of the present disclosure. It should be understood that each process and / or block in the flowchart and / or block diagram and the combination of processes and / or blocks in the flowchart and / or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0189] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0190] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0191] The logic control module described above can be implemented as a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components or any appropriate combination thereof for performing the functions described in this application.

[0192] The present disclosure has been described in detail so far. To avoid obscuring the concept of the present disclosure, some details known in the art have not been described. Based on the above description, those skilled in the art can fully understand how to implement the technical solutions disclosed herein.

[0193] Those skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or may be accomplished by instructing the relevant hardware through a program, and the program may be stored in a non-transitory computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0194] The description of the present disclosure is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present disclosure and to enable those skilled in the art to understand the present disclosure and design various embodiments with various modifications suitable for specific applications.

Claims

1. A beam distribution detection device, characterized in that: The system comprises at least one detector module, which includes a linear array detector, a ray window, and a logic control module. The beam distribution dedicated detection device is an external detector between the beam and the system detector, wherein: The linear array detector is configured to collect beam data according to the instruction of the logic control module; a logic control module configured to process the beam data and determine whether the beam state meets predetermined requirements based on the processed beam data, wherein the predetermined requirements are that the beam distribution area is equal to the sensitive area of ​​the linear array detector and the beam is perpendicularly incident on the sensitive area of ​​the linear array detector; and adjust the beam if the beam state does not meet the predetermined requirements; The ray window is configured to mark a sensitive area of ​​the linear array detector, wherein the sensitive area of ​​the linear array detector is used for aligning the position of the module and the beam.

2. The beam distribution detection device according to claim 1, characterized in that: The logic control module is further configured to adjust the beam by adjusting the position and size of the collimator when the beam state does not meet the predetermined requirements; and to end the measurement and turn off the detector module when the beam state meets the predetermined requirements.

3. The dedicated beam distribution detection device according to claim 1 or 2, characterized in that: It also includes an auxiliary mechanical device, which includes an adsorption device, wherein: The adsorption device is configured to fix the magnetic base on the surface of the arm by switching the magnetic base, and fix the detector module on the magnetic base.

4. The beam distribution detection device according to claim 3, characterized in that: The auxiliary mechanical device further includes a motion module, which includes a translation stage and a translation stage driver. The detector module further includes a drive interface, wherein: The translation stage driver is connected to the drive interface; The translation stage driver is configured to control the movement of the translation stage according to the signal instruction sent by the detector module.

5. The beam distribution detection device according to claim 4, characterized in that: The beam distribution dedicated detection device operates in at least one of an independent working mode, a synchronous working mode, a cascade working mode and a motion scanning working mode; or, The dedicated beam distribution detection device operates in at least one of a remote control operation mode, a synchronous operation mode, a cascade operation mode and a motion scanning operation mode.

6. The dedicated beam distribution detection device according to claim 5, characterized in that: The detector module also includes a display module, which includes a display screen and a display control circuit, wherein: a display screen configured to display control information, beam data, and screen prompt information; The screen control button is configured to receive parameter setting information and display control information input by the operator according to the screen prompt information in the independent working mode, and send the parameter setting information and display control information to the logic control module for detecting the beam distribution.

7. The dedicated beam distribution detection device according to claim 5, characterized in that: The detector module also includes a communication module, which includes: A communication module is configured to communicate with a host computer; The communication module is configured to communicate with the host computer in the remote control working mode, receive the working parameters set by the host computer, send the working parameters to the logic control module, and return the data processed by the logic control module to the host computer.

8. The dedicated beam distribution detection device according to claim 5, characterized in that: The detector module also includes a trigger input interface, where: A trigger input interface is configured to receive a trigger signal input from an external source; The trigger input interface is configured to connect to the trigger output interface of the radiation source in the synchronous working mode and set the working parameters of the detector module; after receiving a trigger signal, it instructs the linear array detector to collect one or more beam data.

9. The dedicated beam distribution detection device according to claim 5, characterized in that: The detector module also includes a trigger input interface and a trigger output interface, where: A trigger input interface is configured to receive a trigger signal input from an external source; A trigger output interface is configured to send a trigger signal to other modules or devices; In the cascade working mode, the beam distribution dedicated detection device includes multiple detector modules, which are cascaded through the trigger input interface and the trigger output interface to enable the multiple detector modules to simultaneously collect data at different positions of the beam.

10. The dedicated beam distribution detection device according to claim 5, characterized in that: In the motion scanning working mode, the detector module is connected to the motion module; The detector module is configured to send a command to move the motion module a certain distance after collecting data once or multiple times; The motion module is configured to make the detector sensitive area cover a two-dimensional area through multiple displacements, and to splice the beam data collected multiple times to reconstruct the two-dimensional beam position distribution data.

11. The dedicated beam distribution detection device according to claim 1 or 2, characterized in that: The linear array detector includes a detection array and an analog-to-digital conversion circuit, wherein: The detection array is a single row of one-dimensional pixels; or, The detection array is at least one of a dual-energy detector and a multi-row detector, wherein: the dual-energy detector is a structure of two layers of stacked detectors, serving as a low-energy detector and a high-energy detector respectively; the multi-row detector is a quasi-two-dimensional array composed of multiple rows of linear arrays.

12. A beam distribution detection method, characterized in that: include: Fixing a detector module in the beam irradiation area, wherein the detector module is a detector module of the dedicated beam distribution detection device according to any one of claims 1 to 11; When the beam is out, collect beam data; Processing beam data; judging whether the beam state meets predetermined requirements according to the processed beam data; When the beam current state does not meet the predetermined requirement, the beam current is adjusted.

13. The beam distribution detection method according to claim 12, characterized in that: Also includes: When the beam state meets the predetermined requirements, the measurement is ended and the detector module is turned off.

14. The beam distribution detection method according to claim 13 or 12, characterized in that: Also includes: When the beam state does not meet the predetermined requirements, the beam is adjusted by adjusting the position and size of the collimator; and then the step of collecting beam data is performed when the beam is emitted.

15. The beam distribution detection method according to claim 13 or 12, characterized in that: Also includes: Setting the working mode of the dedicated beam distribution detection device to at least one of an independent working mode, a synchronous working mode, a cascade working mode and a motion scanning working mode; or, The working mode of the dedicated beam distribution detection device is set to at least one of a remote control working mode, a synchronous working mode, a cascade working mode and a motion scanning working mode.

16. The beam distribution detection method according to claim 15, characterized in that: Also includes: In the independent working mode, the parameter setting information and display control information input by the operator according to the screen prompt information are received through the screen control button, and the parameter setting information and display control information are sent to the logic control module to detect the beam distribution.

17. The beam distribution detection method according to claim 15, characterized in that: Also includes: In the remote control working mode, the communication module receives the working parameters set by the host computer, sends the working parameters to the logic control module, and returns the data processed by the logic control module to the host computer.

18. The beam distribution detection method according to claim 15, characterized in that: Also includes: In the synchronous working mode, the trigger input interface is connected to the trigger output interface of the radiation source, and the working parameters of the detector module are set; after receiving a trigger signal, the linear array detector is instructed to collect beam data once or multiple times.

19. The beam distribution detection method according to claim 15, wherein: Also includes: In the cascade working mode, multiple detector modules are cascaded through the trigger input interface and the trigger output interface to enable multiple detector modules to simultaneously collect data at different positions of the beam.

20. The beam distribution detection method according to claim 15, wherein: Also includes: In motion scanning working mode, connect the detector module to the motion module; After collecting data once or multiple times, the detector module sends a command to move the motion module a certain distance; The motion module makes multiple displacements so that the detector sensitive area covers a two-dimensional area, and splices the beam data collected multiple times to reconstruct the two-dimensional beam position distribution data.

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