Author: Tian, P.
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TUPB10 Design and Simulation of Stripline BPM for HUST Proton Therapy Facility 281
 
  • J.Q. Li, Q.S. Chen, K. Fan, K. Tang, P. Tian
    HUST, Wuhan, People's Republic of China
 
  Proton beams used in Huazhong University of Science and Technology Proton Therapy Facility(HUST-PTF)have extreme low currents of the order of nanoampere,which is a great challenge to beam diagnostics due to low signal level. Conventional destructive beam diagnostic devices will affect the quality of the beam and cannot work online during the patient treatment, so a non-destructive stripline beam position monitor (BPM) is designed. This study will introduce some analysis and simulation results of the stripline BPM, such as the coupling between the electrodes, impedance matching, signal response, etc. We also discussed how to increase the output signal by geometry optimization.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-TUPB10  
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WEPC16 Design and Radiation Simulation of the Scintillating Screen Detector for Proton Therapy Facility 516
 
  • P. Tian, Q.S. Chen, K. Fan, J.Q. Li, K. Tang
    HUST, Wuhan, People's Republic of China
 
  A proton therapy facility based on a superconducting cyclotron is under construction in Huazhong University of Science and Technology (HUST). In order to achieve precise treatment or dose distribution, the beam current would vary from 0.4 nA to 500 nA, in which case conventional non-intercepting instruments would fail due to their low sensitivity. So we propose to use a retractable scintillating screen to measure beam position and beam profile. In this paper, a comprehensive description of our new designed screen monitor is presented, including the choice of material of the screen, optical calibration and simulation of radiation protection. According to the off-line test, the resolution of the screen monitor can reach 0.13 mm/pixel.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2018-WEPC16  
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