Detecting system and method for beam center orbit shift and correcting system and method
A correction system and offset detection technology, which is applied in the direction of measuring devices, DC voltage accelerators, instruments, etc., can solve the problems of complex operation process, damage of electron beam probe, high hardware cost, etc., achieve simple operation process and improve work efficiency , low cost effect
Active Publication Date: 2016-10-12
SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI +1
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Problems solved by technology
However, the operation process is complicated, the hardware cost is high, and for high-voltage accelerators with large beam currents, the electron beam probe is easily damaged by the beam current
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[0042] According to the attached Figure 1-6 , give a preferred embodiment of the present invention, and give a detailed description, so that the functions and characteristics of the present invention can be better understood.
[0043] in such as figure 1 In the shown embodiment, the cross-section of the core tube 14 of the high-pressure accelerator is rectangular. When the accelerator is operating normally, the center orbit of the beam is located at the center of the core tube 14, and the temperature of the core tube 14 is basically normal temperature. However, as described in the background, if the center track of the beam is deviated, it will easily hit the inner wall of the core tube 14, and when it hits the inner wall of the core tube 14, it will cause the side of the core tube 14 to The temperature of the wall increases significantly. Based on this, the present invention provides a system and method for indirectly detecting whether the beam deflects and hits the inner...
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The invention provides a detecting system and method and a correcting system and method for beam central orbit deviation. The detecting system comprises four temperature measurement components, a temperature transmitter and a deviation detector, wherein the four temperature measurement components are installed on the outer wall of a core tube and used for measuring the temperature value of the core tube, the temperature transmitter is used for converting the temperature value measured by the temperature measurement components into a corresponding current signal or a voltage signal, and the deviation detector is used for calculating the difference obtained by subtracting a preset threshold value from the current signal or the voltage signal and outputting a deviation signal when the difference is larger than zero. The correcting system comprises the detecting system, a guide coil used for adjusting the deviation amount of a beam central orbit, and a guiding current controller electrically connected between the deviation detector and the guide coil. The detecting system and the correcting system have the advantages of being simple, practical, low in cost and the like, the core tube of an accelerator system can be effectively protected against damage, and therefore safe and reliable operation can be realized.
Description
technical field [0001] The invention relates to the field of high-pressure accelerators, in particular to a detection system and method for beam center orbital deviation and a correction system and method. Background technique [0002] A high-voltage accelerator is a device that accelerates charged particles through a high-voltage electric field generated by high voltage, where high voltage refers to a voltage within the range of 0.5MV to 5MV. After the installation of the high-pressure accelerator is completed, it needs to go through a long period of debugging, including high-pressure training, beam-out training, and related parameter determination. In this process, it is generally necessary to determine parameters such as high-voltage correction coefficient, focusing current, steering current, and scanning current. Once these parameters are determined, they are fixed and will not be changed. If it needs to be modified, it needs to be modified by experienced technicians, ...
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IPC IPC(8): H05H5/02G01B21/00
Inventor 苏海军王胜利郭鑫郭洪雷吕彬
Owner SHANGHAI INST OF APPLIED PHYSICS - CHINESE ACAD OF SCI