36 results about "Beam monitor" patented technology

A synchrocyclotron comprises a resonant circuit that includes electrodes having a gap therebetween across the magnetic field. An oscillating voltage input, having a variable amplitude and frequency determined by a programmable digital waveform generator generates an oscillating electric field across the gap. The synchrocyclotron can include a variable capacitor in circuit with the electrodes to vary the resonant frequency. The synchrocyclotron can further include an injection electrode and an extraction electrode having voltages controlled by the programmable digital waveform generator. The synchrocyclotron can further include a beam monitor. The synchrocyclotron can detect resonant conditions in the resonant circuit by measuring the voltage and or current in the resonant circuit, driven by the input voltage, and adjust the capacitance of the variable capacitor or the frequency of the input voltage to maintain the resonant conditions. The programmable waveform generator can adjust at least one of the oscillating voltage input, the voltage on the injection electrode and the voltage on the extraction electrode according to beam intensity and in response to changes in resonant conditions.

A method and apparatus for monitoring a scanning beam of penetrating radiation, such as a scanning proton beam used to irradiate tissue. The position of the beam is tracked in real time by interposing a scintillator film between a source and an object of irradiation. An imaging detector, in optical communication with the scintillator, provides an output that is indicative of the position of the radiation and its variation with time. The accumulated dose over a scan may also be monitored.

The embodiment of the invention provides a beam monitoring object determination method. The method comprises the steps of determining transmission configuration indication information of control channels; determining a reference signal set q1 according to the transmission configuration indication information, wherein the q1 comprises reference signals for indicating space parameters; and determining a beam monitoring reference signal set q1 according to types of the reference signals. The embodiment of the invention also provides a beam monitoring object determination device and a computer memory medium.

Disclosed is a beam monitor system in which signals outputted from a plurality of wires are divided in a multi-wire type monitor for measuring a beam profile of a charged particle beam, an identical number of the wires are grouped, the signals of the respective groups are taken out one piece by one piece to be connected with each other, and the number of the pieces, corresponding to a number of the wires belonging to the one group, are put together to be connected to a signal processor storing connection information.

The present invention is a method to enhance accuracy of irradiation with beam for an irradiation system with a beam. The irradiation system comprises a beam generation source, a mass analysis device, a beam transformer, a scanner which swings the beam reciprocally with high speed, a beam parallelizing device, an acceleration / deceleration device, an energy filtering device, and beam monitors. The beam transformer comprises a vertically focusing synchronized quadrupole electromagnet syQD and a horizontally focusing synchronized quadrupole electromagnet syQF. Consequently, it is possible to correct at least one of a deviation in beam divergence angle and a deviation in beam size within a range between a center trajectory and an outer trajectory after swinging of the beam by the scanner.

A dual isotope notch observer for isotope identification, assay and imaging with mono-energetic gamma-ray sources includes a detector arrangement consists of three detectors downstream from the object under observation. The latter detector, which operates as a beam monitor, is an integrating detector that monitors the total beam power arriving at its surface. The first detector and the middle detector each include an integrating detector surrounding a foil. The foils of these two detectors are made of the same atomic material, but each foil is a different isotope, e.g., the first foil may comprise U235 and second foil may comprise U238. The integrating detectors surrounding these pieces of foil measure the total power scattered from the foil and can be similar in composition to the final beam monitor. Non-resonant photons will, after calibration, scatter equally from both foils.

In the working process of an electron accelerator, the transport of an electron beam is invisible in an electron accelerating tube, and the transport of the electron beam is difficult to monitor in an electron accelerating tube section. In order to solve the problems, the invention provides an electron beam monitoring device, which is characterized by consisting of four probes, two flanges and a pipeline. Two sides of the pipeline is welded with the flanges; each probe consists of a receiving board, a joint, a Kovar insulation sleeve and four shaft rods; the receiving board is fixedly connected with one end of the shaft rods inserted into inside the pipeline through a bolt; the joint is sleeved on the shaft rods and fixedly welded with the outer wall of the pipeline; the Kovar insulation sleeve is sleeved on the shaft rods, one end of the Kovar insulation sleeve is welded with the joint, and the other end of the Kovar insulation sleeve is welded with the shaft rods; and the probes are uniformly and circumferentially installed on the same vertical plane of inner side of the pipeline. The device detects whether improper transport statuses such as broken stream occur during the outputting electron beams of the electron accelerator through a beam signal output by the monitoring probes, thereby providing objective basis for the diagnosis of beam statuses of the electron accelerator and contributing to improvement on the safe reliability of the electron accelerator.

Disclosed is a beam monitor system in which signals outputted from a plurality of wires are divided in a multi-wire type monitor for measuring a beam profile of a charged particle beam, an identical number of the wires are grouped, the signals of the respective groups are taken out one piece by one piece to be connected with each other, and the number of the pieces, corresponding to a number of the wires belonging to the one group, are put together to be connected to a signal processor storing connection information.

Aspects relate to detecting beam failure. A beam failure in a full-duplex communication scenario may be detected based on a reference signal measurement. For example, a user equipment (UE) may measure a downlink reference signal transmitted by a base station and / or an uplink reference signal transmitted by the UE and derive a quality parameter based on one or both of these measurements. If the quality parameter indicates a beam failure, the UE may generate an indication that one or more of the beams monitored by the UE have failed.

A beam monitor system having a simple configuration for improving a measurement precision specifying a position and the width. A beam monitor system, comprising collection electrodes that include a plurality of groups each having a plurality of adjacent wire electrodes, and detect an ionized particle beam passing therethrough, a first signal processing device that sets one wire electrode in the groups of the collection electrodes as a typical wire electrode, receives a detection signal output from the typical wire electrode to process the signal and a beam monitor controller that obtains a beam position of the ionized particle beam that has passed through the wire electrodes on the basis of a processed signal from the first signal processing device.

The invention provides a particle irradiation device and a particle treatment system. The particle radiation device is used for irradiating particle beam in a tumor zone. The particle radiation device comprises a treatment head and an irradiation control system. The treatment head comprises a bellows, a first scanning magnet, a second scanning magnet, a second vacuum box, a beam spot size regulation device, and a vacuum window beam monitoring module; the downstream of the beam monitoring module is provided with a movably connected ridge-shaped filter, a gunshot compensator and a collimator; the ridge-shaped filter is provided with a fixing device, a main body and a position regulation device which is connected to an irradiation control system in order to drive the main body to move along the changing direction of the height and the thickness in the irradiation implementation; the irradiation control systems controls the first scanning magnet and the second scanning magnet to deflect the particle beam to the position corresponding to the tumor target zone, and controls the beam monitoring module to monitor the dosage of the particle beam and the position information. The invention allows the doctor to perform either two-dimension irradiation therapy or three-dimension irradiation therapy on one device according to the clinical requirement.

Beam detectors configuring a beam monitor are connected to a single current measurement apparatus through respective switches. If a width of a beam incident hole of each of the beam detectors 32 in the X direction is Wf, a gap between the beam incident holes of adjacent beam detectors in the X direction is Ws, a beam width of the ion beam in the X direction is Wb, a total number of beam detectors is “p”, and “n” is an integer of 0≦n≦(p−2) and satisfying Wb<{n·Wf+(n+1)Ws}, a measuring process of receiving the ion beam by the beam monitor and measuring the waveforms of the beam currents flowing into the current measurement apparatus in a state in which the plurality of switches skipped by “n” are simultaneously switched ON and a switching process of switching the switches simultaneously switched ON under the condition, are repeated.