Keyword: cyclotron
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MOPA04 The Beam Instruments for HIMM@IMP synchrotron, MMI, detector, extraction 33
 
  • T.C. Zhao, Y.C. Chen, J.M. Dong, Y.C. Feng, X.C. Kang, M. Li, S. Li, W.L. Li, W.N. Ma, R.S. Mao, H.H. Song, K. Song, Y. Wang, K. Wei, Z.G. Xu, Y. Yan, Y. Yin, Z.L. Zhao
    IMP/CAS, Lanzhou, People's Republic of China
 
  HIMM(Heavy Ion Medical Machine)is a synchrotron based accelerator for cancer therapy in Wuwei city, China. It is composed of 2 ion sources, LEBT, cyclotron, MEBT, a synchrotron, HEBT and therapy terminals. The commissioning of HIMM is completed .At present, electrical safety, electromagnetic compatibility and performance testing of medical devices have been passed, and now enters the clinical tests phase. The beam diagnositics(BD) devices for HIMM are designed and produced by IMP BD department .An overview of the integrated devices is presented, and the common beam parameters in the different parts of the accelerator facility are reviewed including intensity measurement, beam profile, emmitance, energy and so on with the related detectors such as the View Screen, Faraday Cup, Radial Detector, Multi-wires, Phase Probe, Wire Scanner, DCCT, ICT, BPM, Schottky, Slit, Beam Stopper, Beam Halo Monitor, Multi-channel Ionization Chamber. Additionally, the RF-KO for beam extraction, the strip foil with automatic control system as well as the detectors for terminal therapy are described.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-MOPA04  
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MOPC12 The Radial Detector in the Cyclotron of HIMM controls, target, detector, extraction 140
 
  • M. Li, Y.C. Chen, Y.C. Feng, X.C. Kang, S. Li, W.L. Li, W.N. Ma, R.S. Mao, Y.G. Nie, H.H. Song, Y. Wang, Y. Yin, T.C. Zhao
    IMP/CAS, Lanzhou, People's Republic of China
 
  The cyclotron is designed as the injector of the Heavy Ion Medical Machine (HIMM) in Wuwei city, China. It provides 10 uA carbon beams to fulfill the requirement of the accumulation in the following syn-chrotron. The Radial detector is used to measure the beam current and beam turn motion in this Cyclotron. The beam current signal gathered by radial detector is acquired by four picoammeters, meanwhile the beam time structure is measured with FPGA and real time operating system. This paper introduces the design of radial detector, the motion control and data acquisition system for it of the cyclotron. Finally, the beam current and turn pattern measurement results at HIMM are presented in this paper.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-MOPC12  
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TUPA07 Collimator for Beam Position Measurement and Beam Collimation for Cyclotron controls, target, vacuum, collimation 224
 
  • L.X. Hu, Y. Chen, K.Z. Ding, J. Li, Y. Song, Q. Yang
    ASIPP, Hefei, People's Republic of China
  • Y.C. Wu, K. Yao
    HFCIM, HeFei, People's Republic of China
 
  Funding: This work is supported in part by grants 1604b0602005 and 1503062029.
In order to restrict the beam dispersion and diffusion at the extraction area of the cyclotron and to detect abnormal beam loss, a beam collimator system has been designed to collimate the beam and to measure its transverse positions. The collimator system is composed of a vacuum cavity, two pairs of beam targets, a set of driving and supporting mechanism, and a measurement and control unit. The beam target with the size determined by the diameter of the beam pipe, the particle energy and beam intensity, will generate current signal during particle deposition. Each pair of beam targets has bilateral blocks which forms a slit in either horizontal or vertical direction. Servo motor and screw rod are used so that the target can reciprocate with the repeatability of less than 0.1mm. The measurement and control system based on LabVIEW can realize the motion control and current measurement of the targets and then calculate the beam transverse positions.
 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPA07  
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TUPC10 The Design of Scanning Control System for Proton Therapy Facility at CIAE controls, proton, feedback, interface 319
 
  • L.C. Cao, T. Ge, F.P. Guan, S.G. Hou, X.T. Lu, Y. Wang, L.P. Wen
    CIAE, Beijing, People's Republic of China
 
  A new proton therapy facility is being construted at CIAE. As a part of whole control system, the scanning control system is designed to scan the beam for the access of required tumor therapy field. The origin data plan comes from treatment control system. Two set of dipole magnet is driven for changing the beam path. Meanwhile, interfaces between scanning system and other systems is built for beam control and safe considering. In order to acquire high precise feedback control, the beam position and dose monitor ionization chambers will be constructed in the nozzle. Once accident occurs, the scanning system should be able to response instantly to cut off beam and inform safe interlock system simultaneously. The response time of scanning system is at tens of microsecond level, so the scanning controller, feedback controller and the monitor electronics is built in fast mode. Detailed description will be presented in this paper.  
poster icon Poster TUPC10 [0.794 MB]  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPC10  
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