Space-time resolution X-ray diagnosis system

Abstract

The invention provides a space-time resolution X-ray diagnosis system, relates to the technical field of X-ray diagnosis systems, aims to realize convenient cathode replacement, no circulating water leakage risk and imaging monitoring function, and relates to a pinhole / slit imaging system assembly and an air chamber type X-ray streak camera. The pinhole / slit imaging system assembly is mounted on a front panel of the air chamber type X-ray streak camera; the air chamber type X-ray streak camera comprises an air chamber and a camera assembly arranged in the air chamber. The camera assembly comprises an X-ray scanning image converter tube installed at the front end of the air chamber. A circulating water refrigerating system in the camera assembly is completely arranged in the air chamber; the pinhole / slit imaging system assembly is used for aiming at the position of a target spot and imaging X-rays emitted by the target spot to a cathode slit of the air chamber type X-ray streak camera, and the X-ray scanning image converter tube is used for achieving time scale light back illumination coupling. The method has the advantages of improving the use convenience and prolonging the service life of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of X-ray diagnostic systems, and in particular to a time-space resolution X-ray diagnostic system. Background Art

[0002] The space-time resolution X-ray streak camera diagnostic system, which uses a gas chamber X-ray streak camera coupled with a slit or pinhole imaging component, has ultra-high resolution and is an indispensable core diagnostic equipment for inertial confinement fusion physics experiments in large laser facilities.

[0003] The currently used time-space resolution X-ray streak camera diagnostic system has at least the following shortcomings:

[0004] The method of coupling the time-scale optical fiber from the front end of the cathode is adopted. When replacing the cathode, the time-scale optical fiber fixing installation structure needs to be completely dismantled, which makes cathode replacement difficult; a water-cooled image recording camera is used to collect and store images, and there is a risk of circulating water leakage and damage to optical components; the slit or pinhole imaging component does not have the imaging position monitoring function, and the deviation cannot be corrected when there is an aiming deviation in the system.

[0005] Therefore, there is an urgent need to develop an X-ray time-space resolution diagnostic system that is easy to replace the cathode, has no risk of circulating water leakage, and has imaging monitoring capabilities. Summary of the invention

[0006] The object of the present invention is to provide a time-space resolution X-ray diagnostic system, which can realize convenient cathode replacement, has no risk of circulating water leakage and has an imaging monitoring function.

[0007] The embodiments of the present invention are implemented by the following technical solutions:

[0008] A time-space resolution X-ray diagnostic system, comprising a pinhole / slit imaging system component and a gas chamber type X-ray streak camera;

[0009] The pinhole / slit imaging system assembly is mounted on the front panel of the air chamber type X-ray streak camera;

[0010] The air chamber type X-ray streak camera comprises an air chamber and a camera assembly arranged in the air chamber, wherein the camera assembly comprises an X-ray scanning image converter tube installed at the front end of the air chamber; the circulating water cooling system in the camera assembly is entirely arranged inside the air chamber;

[0011] The pinhole / slit imaging system component is used to aim at the target position and image the X-rays emitted by the target onto the cathode slit of the air chamber type X-ray streak camera, and the X-ray scanning image converter is used to realize time-scale light back-illumination coupling.

[0012] Preferably, the pinhole / slit imaging system assembly comprises an outer cylinder, a pinhole / slit element, a sighting assembly, a monitoring camera and a scintillator module;

[0013] The bottom surface of the outer cylinder is connected to the front panel of the air chamber type X-ray streak camera, the pinhole / slit element is installed on the inner front end of the outer cylinder, the aiming assembly is installed on the outer cylinder and is located behind the pinhole / slit element, and the monitoring camera is installed on the outer wall of the outer cylinder and is located behind the aiming assembly; the scintillator module is arranged behind the monitoring camera, and the field of view of the monitoring camera covers the scintillator module.

[0014] Preferably, a rectangular hollow structure is provided at the center of the scintillator module, and the hollow structure and the center of the cathode slit are collinear.

[0015] Preferably, the length and width of the hollow structure are respectively greater than the length and width of the cathode slit.

[0016] Preferably, the X-ray scanning image converter tube comprises an electronic optical system and a back-illuminated time-scale component;

[0017] The back-illuminated time-marker assembly is arranged on the outer wall of the electron optical system, and the cathode slit is arranged on the X-ray cathode located at the front end of the electron optical system.

[0018] Preferably, the back-illuminated time-marker assembly comprises a first focusing lens, a second focusing lens, a reflector and an optical fiber connector;

[0019] The optical fiber connector is connected to the time-mark light input connector on the air chamber rear panel of the air chamber type X-ray streak camera;

[0020] The first focusing lens is arranged opposite to the optical fiber input, the reflector is used to reflect the output of the first focusing lens to the second focusing lens, and the second focusing lens is used to incident the reflected light onto the back of the X-ray cathode to achieve time-scale light back-illumination coupling.

[0021] Preferably, the second focusing lens and the electron optical system are sealed by ceramic.

[0022] Preferably, the air chamber type X-ray streak camera further comprises an image intensifier, a CMOS camera, a small water pump, a phase change module and a control system module; the CMOS camera is a water-cooled camera;

[0023] The image intensifier is coupled to the rear end of the X-ray scanning image converter, the rear end of the image intensifier is coupled to the CMOS camera, the rear end of the CMOS camera is provided with the small water pump, the rear end of the small water pump is provided with the phase change module, and the interior of the phase change module is provided with a phase change heat absorbing material, and the rear end of the phase change module is provided with the control system module; the small water pump and the phase change module are used to cool the CMOS camera, and the CMOS camera is connected to the small water pump through a water pipe.

[0024] Preferably, an airtight input module is provided on the rear panel of the air chamber, and the functions of the airtight input module include power supply, synchronous triggering and communication connector input.

[0025] The technical solution of the embodiment of the present invention has at least the following advantages and beneficial effects:

[0026] The present invention solves the problem that the current diagnostic system cannot correct the aiming deviation, and improves the aiming accuracy and reliability of the diagnostic system;

[0027] Under the arrangement mode of the X-ray scanning image converter tube of the present invention, the cathode can be quickly replaced without disassembling the time-marking light bracket, thereby improving the convenience of use;

[0028] In the camera assembly of the present invention, the CMOS camera does not need to be cooled by circulating water from outside the air chamber, which can avoid the risk of circulating water leakage damaging the laser optical element and increase the service life of the system;

[0029] The invention has reasonable design, simple structure, low cost and excellent performance, has high cost performance, and is easy to promote and implement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A perspective structural diagram of a time-space resolution X-ray diagnostic system provided in Example 1 of the present invention;

[0031] Figure 2 A schematic diagram of the structure of a pinhole / slit imaging system component provided in Example 2 of the present invention;

[0032] Figure 3 A schematic diagram of the structure of an X-ray scanning image converter provided in Embodiment 2 of the present invention;

[0033] Icons: 1-pinhole / slit imaging system components, 2-air chamber type X-ray streak camera, 201-air chamber, 202-X-ray scanning image converter, 203-image intensifier, 204-CMOS camera, 205-small water pump, 206-phase change module, 207-control system module, 208-airtight input module, 209-time-scale light input connector, 101-pinhole / slit element, 102-aiming assembly, 103-outer cylinder, 104-scintillator module, 105-monitoring camera, 301-electron optical system, 302-optical fiber connector, 303-first focusing lens, 304-reflector, 305-second focusing lens, 306-cathode slit, 307-X-ray cathode. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0035] Example 1

[0036] This embodiment provides a time-space resolution X-ray diagnosis system. Figure 1 , including a pinhole / slit imaging system component 1 and a gas chamber 201 type X-ray streak camera 2;

[0037] The pinhole / slit imaging system assembly 1 is mounted on the front panel of the gas chamber 201 type X-ray streak camera 2;

[0038] The air chamber 201 type X-ray streak camera 2 comprises an air chamber 201 and a camera assembly arranged in the air chamber 201, wherein the camera assembly comprises an X-ray scanning image converter tube 202 installed at the front end of the air chamber 201; the circulating water cooling system in the camera assembly is entirely arranged inside the air chamber 201;

[0039] The pinhole / slit imaging system assembly 1 is used to aim at the target position and image the X-rays emitted by the target onto the cathode slit 306 of the gas chamber 201 type X-ray streak camera 2, and the X-ray scanning image converter 202 is used to realize time-scale light back-illumination coupling.

[0040] The core design of this embodiment is as follows:

[0041] First, the time-scale coupling of the traditional streak camera is to install the time-scale coupling structure at the front end of the cathode of the camera component. Therefore, when replacing the cathode, it is necessary to first remove the fixed structure between the cathode and the time-scale coupling structure, which results in the disadvantage of cumbersome replacement of the cathode and even increased risk of system damage. Therefore, the structure of the time-scale light back-illumination coupling involved in this embodiment, that is, the X-ray scanning image converter 202 is not directly fixed on the cathode, but is installed and realized by other means. In this way, the difficulty and steps of cathode replacement are reduced, and the convenience of cathode replacement is improved.

[0042] On the other hand, generally speaking, a cooling system is required in the camera assembly, and cooling through a water cooling system is a common method. However, the circulating water tank of the integrated water cooling system is outside the camera working platform. Under the water cooling exchange between the inside and outside, if there is a water leakage problem, it may cause adverse effects on the precision components outside the air chamber 201. In this embodiment, the entire water cooling system is integrated inside the air chamber 201, eliminating the situation of causing damage to the components outside the air chamber 201.

[0043] At the same time, the system of this embodiment is completely configured, and X-ray diagnosis can be achieved with the cooperation of various components.

[0044] Example 2

[0045] This embodiment is based on the technical solution of Embodiment 1 and further explains the design of each component.

[0046] In this embodiment, the pinhole / slit imaging system assembly 1 includes an outer cylinder 103, a pinhole / slit element 101, a sighting assembly 102, a monitoring camera 105 and a scintillator module 104;

[0047] The bottom surface of the outer cylinder 103 is connected to the front panel of the air chamber 201 type X-ray streak camera 2, the pinhole / slit element 101 is installed on the inner front end of the outer cylinder 103, the aiming assembly 102 is installed on the outer cylinder 103 and is located behind the pinhole / slit element 101, and the monitoring camera 105 is installed on the outer wall of the outer cylinder 103 and is located behind the aiming assembly 102; the scintillator module 104 is arranged behind the monitoring camera 105, and the field of view of the monitoring camera 105 covers the scintillator module 104.

[0048] As a preferred solution of this embodiment, a rectangular hollow structure is provided at the center of the scintillator module 104 , and the hollow structure and the center of the cathode slit 306 are collinear.

[0049] Furthermore, the length and width of the hollow structure are respectively greater than the length and width of the cathode slit 306 .

[0050] When the time-space resolution X-ray streak camera diagnostic system of this embodiment is working, the aiming assembly 102 aims at the target position. Then the pinhole / slit element 101 images the X-ray emitted by the target onto the cathode slit 306 of the X-ray streak camera. After the X-ray passes through the cathode slit 306, it is recorded by the gas chamber 201 type X-ray streak camera 2 to obtain time-space resolution. Before the X-ray enters the cathode slit 306 of the camera, it must first pass through the scintillator module 104. Only the X-ray that passes through the central hollow structure of the scintillator module 104 can reach the cathode slit 306, and the X-ray at the edge of the incident hollow structure interacts with the scintillator to emit visible light, which is recorded by the detection camera.

[0051] On the other hand, the X-ray scanning image converter tube 202 includes an electron optical system 301 and a back-illuminated time-marker assembly;

[0052] The back-illuminated time-marker assembly is disposed on the outer wall of the electron optical system 301 , and the cathode slit 306 is disposed on the X-ray cathode 307 located at the front end of the electron optical system 301 .

[0053] In this embodiment, the back-illuminated time-marker assembly includes a first focusing lens 303, a second focusing lens 305, a reflector 304 and an optical fiber connector 302;

[0054] The optical fiber connector 302 is connected to the time-mark light input connector 209 on the rear panel of the air chamber 201 of the air chamber 201 type X-ray streak camera 2;

[0055] The first focusing lens 303 is arranged opposite to the optical fiber input, the reflector 304 is used to reflect the output of the first focusing lens 303 to the second focusing lens 305, and the second focusing lens 305 is used to incident the reflected light onto the back of the X-ray cathode 307 to achieve time-scale light back-illumination coupling.

[0056] Furthermore, the second focusing lens 305 and the electron optical system 301 are sealed by ceramics to ensure that the interior of the electron optical system 301 is an integral airtight structure.

[0057] Specifically, the time-marker light is input by the time-marker light input connector 209 and then passes through the optical fiber input head of the back-illuminated time-marker component. It is then focused once by the first focusing lens 303 into a smaller light spot and reaches the reflector 304. After being reflected by the reflector 304, it enters the second focusing lens 305. After being focused twice by the second focusing lens 305, it is incident from the back of the X-ray cathode 307 to realize the time-marker light back-illuminated coupling.

[0058] In addition, the air chamber 201 type X-ray streak camera 2 preferably further includes an image intensifier 203, a CMOS camera 204, a small water pump 205, a phase change module 206 and a control system module 207; the CMOS camera 204 is a water-cooled camera;

[0059] The image intensifier 203 is coupled to the rear end of the X-ray scanning image converter 202, and the rear end of the image intensifier 203 is coupled to the CMOS camera 204. The small water pump 205 is arranged at the rear end of the CMOS camera 204, and the phase change module 206 is arranged at the rear end of the small water pump 205. The phase change module 206 is provided with a phase change heat-absorbing material inside, and the control system module 207 is arranged at the rear end of the phase change module 206; the small water pump 205 and the phase change module 206 are used to cool the CMOS camera 204, and the CMOS camera 204 is connected to the small water pump 205 through a water pipe.

[0060] As a preferred solution of this embodiment, an airtight input module 208 is provided on the rear panel of the air chamber 201 , and the functions of the airtight input module 208 include power supply, synchronous triggering and communication connector input.

[0061] Specifically, during cooling and heat dissipation, the heat of the circulating water in the small water pump 205 is transferred to the phase change heat absorbing material in the phase change module 206 through the heat pipe or the heat conduction wall and absorbed, which can maintain the cooling work of the CMOS camera 204 for a long time.

[0062] It should be noted that in terms of power supply, various voltages and trigger signals required for the operation of the X-ray scanning image converter 202, the image intensifier 203, the CMOS camera 204 and the small water pump 205 are provided by the control system module 207, and the operating voltage, trigger signal and remote control communication of the control system module 207 itself are provided by the airtight input module 208 on the rear panel of the gas chamber 201.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A time-space resolution X-ray diagnostic system, characterized in that: It comprises a pinhole / slit imaging system component (1) and an air chamber (201) type X-ray streak camera (2); The pinhole / slit imaging system component (1) is mounted on the front panel of the air chamber (201) type X-ray streak camera (2); The air chamber (201) type X-ray streak camera (2) comprises an air chamber (201) and a camera assembly arranged in the air chamber (201), wherein the camera assembly comprises an X-ray scanning image converter tube (202) installed at the front end of the air chamber (201); the circulating water cooling system in the camera assembly is entirely arranged inside the air chamber (201); The pinhole / slit imaging system component (1) is used to aim at the target position and image the X-rays emitted by the target onto the cathode slit (306) of the gas chamber (201) type X-ray streak camera (2), and the X-ray scanning image converter (202) is used to achieve time-scale light back-illumination coupling.

2. A time-space resolution X-ray diagnostic system according to claim 1, characterized in that: The pinhole / slit imaging system component (1) comprises an outer cylinder (103), a pinhole / slit element (101), a sighting component (102), a monitoring camera (105) and a scintillator module (104); The bottom surface of the outer tube (103) is connected to the front panel of the air chamber (201) type X-ray streak camera (2); the pinhole / slit element (101) is installed on the inner front end of the outer tube (103); the aiming assembly (102) is installed on the outer tube (103) and is located behind the pinhole / slit element (101); the monitoring camera (105) is installed on the outer wall of the outer tube (103) and is located behind the aiming assembly (102); the scintillator module (104) is arranged behind the monitoring camera (105); and the field of view of the monitoring camera (105) covers the scintillator module (104).

3. A time-space resolution X-ray diagnostic system according to claim 2, characterized in that: A rectangular hollow structure is provided at the center of the scintillator module (104), and the hollow structure and the center of the cathode slit (306) are collinear.

4. The time-space resolution X-ray diagnostic system according to claim 3, characterized in that: The length and width of the hollow structure are respectively greater than the length and width of the cathode slit (306).

5. The time-space resolution X-ray diagnostic system according to claim 1, characterized in that: The X-ray scanning image converter tube (202) comprises an electronic optical system (301) and a back-illuminated time-marker component; The back-illuminated time-marker component is arranged on the outer wall of the electron optical system (301), and the cathode slit (306) is arranged on the X-ray cathode (307) located at the front end of the electron optical system (301).

6. The time-space resolution X-ray diagnostic system according to claim 5, characterized in that: The back-illuminated time-marker assembly comprises a first focusing lens (303), a second focusing lens (305), a reflector (304) and an optical fiber connector (302); The optical fiber connector (302) is connected to a time-marked optical input connector (209) on a rear panel of the air chamber (201) of the air chamber (201) type X-ray streak camera (2); The first focusing lens (303) is arranged opposite to the optical fiber input, the reflector (304) is used to reflect the output of the first focusing lens (303) to the second focusing lens (305), and the second focusing lens (305) is used to make the reflected light incident on the back of the X-ray cathode (307) to achieve time-scale light back-illumination coupling.

7. The time-space resolution X-ray diagnostic system according to claim 6, characterized in that: The second focusing lens (305) and the electron optical system (301) are sealed by ceramic.

8. The time-space resolution X-ray diagnostic system according to claim 1, characterized in that: The air chamber (201) type X-ray streak camera (2) further comprises an image intensifier (203), a CMOS camera (204), a small water pump (205), a phase change module (206) and a control system module (207); the CMOS camera (204) is a water-cooled camera; The image intensifier (203) is coupled to the rear end of the X-ray scanning image converter (202); the rear end of the image intensifier (203) is coupled to the CMOS camera (204); the rear end of the CMOS camera (204) is provided with the small water pump (205); the rear end of the small water pump (205) is provided with the phase change module (206), and the phase change heat absorbing material is provided inside the phase change module (206); the rear end of the phase change module (206) is provided with the control system module (207); the small water pump (205) and the phase change module (206) are used to cool the CMOS camera (204); the CMOS camera (204) is connected to the small water pump (205) via a water pipe.

9. The time-space resolution X-ray diagnostic system according to claim 8, characterized in that: An airtight input module (208) is arranged on the rear panel of the air chamber (201), and the functions of the airtight input module (208) include power supply, synchronous triggering and communication connector input.

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