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Compact type wideband BPM (beam position monitor) for proton synchrotron

A technology of synchrotron and beam position, which is applied in the direction of radiation measurement, instruments, and measuring devices, can solve the problems that cannot meet the requirements of lap-by-turn position measurement, large accelerator space, narrow detector bandwidth, etc., and achieve small space, The effect of high processing precision and convenient operation

Active Publication Date: 2018-11-13
NORTHWEST INST OF NUCLEAR TECH
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Problems solved by technology

[0006] In order to effectively solve the problem that the existing beam position detector has a narrow bandwidth, cannot meet the requirements of circle-by-turn position measurement and occupies a large space in the accelerator, the present invention provides a compact broadband beam position detector for proton synchrotrons detector

Method used

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  • Compact type wideband BPM (beam position monitor) for proton synchrotron
  • Compact type wideband BPM (beam position monitor) for proton synchrotron
  • Compact type wideband BPM (beam position monitor) for proton synchrotron

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Embodiment Construction

[0035] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0036] refer to image 3 and Figure 4 , the beam position detector includes a vacuum chamber 201 , a sleeve 202 , two right triangle electrodes 203 , an isolation ring 207 , a first ground ring 204 , a second ground ring 205 , an insulating positioning component 214 and a signal pickup 206 .

[0037] The outermost side of the beam position detector is provided with a vacuum chamber 201. The vacuum chamber 201 includes a rectangular vacuum box 208 and a quick-connect flange 209 connected to both ends of the rectangular vacuum box 208. The end face of the quick-connect flange 209 contains a sealing knife-edge feature for use with The copper gasket cooperates to achieve vacuum sealing, and the structure is convenient and quick to disassemble. The side of the vacuum chamber 201 is provided with a connecting flange 220 for fixing the signal picku...

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Abstract

The invention belongs to the technical field of particle accelerator beam diagnosis, particularly relates to a compact type wideband BPM (beam position monitor) for a proton synchrotron and solves theproblems that existing BPMs are narrower in bandwidth, cannot meet the requirement for turn-by-turn measurement and occupies large accelerator space. According to the technical solution, the compacttype wideband BPM for the proton synchrotron comprises a vacuum cavity, a sleeve, two right triangle electrodes, a first grounding ring, a second grounding ring, signal pickup units and an isolating ring. The vacuum cavity comprises a rectangular box and quick connection flanges arranged at two ends of the rectangular vacuum box, the sleeve is nested in the rectangular vacuum box, the two right triangle electrodes are arranged in the sleeve, and the isolating ring is arranged between the two right triangle electrodes and can move in the axial direction of the vacuum cavity. The detector is arranged in correction iron of the proton synchrotron for irradiation or medical use and is used for turn-by-turn position and closed orbit measurement of protons.

Description

technical field [0001] The invention relates to the technical field of particle accelerator beam current diagnosis, in particular to a compact wide-band beam current position detector for a proton synchrotron. Background technique [0002] Beam Position Probe (BPM) is a necessary measurement element for accelerator operation and debugging. Accurate turn-by-turn position and orbit-closed measurement are of great significance for accelerator optimization and research. For irradiation or medical proton synchrotrons, the high-frequency frequency varies from hundreds of kilohertz to several megahertz, and the beam spectrum width reaches tens of megahertz. The detector must have good broadband performance to realize the beam step by step. Circle position measurement. [0003] The study found that the BPM broadband performance is mainly determined by the BPM sensitivity and the dependence of zero drift on frequency. The fundamental reason is determined by the coupling capacitance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/29
CPCG01T1/2914
Inventor 王敏文王忠明邱孟通郑曙昕
Owner NORTHWEST INST OF NUCLEAR TECH
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