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国产首台交变相位聚焦漂移管加速器的冷测与试运行

谢修璀 蒲越虎 赵振堂

谢修璀, 蒲越虎, 赵振堂. 国产首台交变相位聚焦漂移管加速器的冷测与试运行[J]. 强激光与粒子束, 2022, 34: 084007. doi: 10.11884/HPLPB202234.220014
引用本文: 谢修璀, 蒲越虎, 赵振堂. 国产首台交变相位聚焦漂移管加速器的冷测与试运行[J]. 强激光与粒子束, 2022, 34: 084007. doi: 10.11884/HPLPB202234.220014
Xie Xiucui, Pu Yuehu, Zhao Zhentang. Cold test and beam commissioning of China’s first homemade alternating-phase-focused drift tube linac[J]. High Power Laser and Particle Beams, 2022, 34: 084007. doi: 10.11884/HPLPB202234.220014
Citation: Xie Xiucui, Pu Yuehu, Zhao Zhentang. Cold test and beam commissioning of China’s first homemade alternating-phase-focused drift tube linac[J]. High Power Laser and Particle Beams, 2022, 34: 084007. doi: 10.11884/HPLPB202234.220014

国产首台交变相位聚焦漂移管加速器的冷测与试运行

doi: 10.11884/HPLPB202234.220014
基金项目: 国家重点研发计划项目(2016YFC0105408)
详细信息
    作者简介:

    谢修璀,xiexiucui@sinap.ac.cn

    通讯作者:

    蒲越虎,puyuehu@sinap.ac.cn

  • 中图分类号: TL506

Cold test and beam commissioning of China’s first homemade alternating-phase-focused drift tube linac

  • 摘要: 质子直线注入器是质子治癌系统的重要组成部分。出于项目进度的考虑,上海先进质子治癌示范装置APTRON采用了进口自美国的直线注入器。为了加快质子治癌产业进程,掌握质子放疗关键技术,保证产业链安全可控,注入器团队研发了国产医用质子直线注入器。该直线注入器采用了电子回旋共振(ECR)离子源和四翼型射频四极加速器(RFQ)的技术方案,并在漂移管加速器(DTL)段创新性地采用了交变相位聚焦(APF)结构。在这个过程中,通过研究APF DTL的束流运动规律和设计思想,自主开发了APF DTL的底层物理设计软件,相继完成了物理设计、电磁设计、机械设计、加工建造、腔体冷测、高频老练和载束实验等多个阶段的工作,最终成功引出了7 MeV、7 mA的质子束流。经过束诊系统的测量分析,认定束流中心能量为6.975 MeV,动量分散在±0.35%以内的束流流强为6.07 mA。成为国产首台医用质子直线注入器和首个实现成功载束的APF加速腔。
  • 图  1  上海先进质子治癌示范装置APTRON示意图,该示意图没有第5、6治疗终端

    Figure  1.  Schematic diagram of Shanghai advance proton therapy facility APTRON, except the 5th and 6th treatment room

    图  2  APF设计软件的基本逻辑框图

    Figure  2.  Logical diagram of alternating-phase-focused (APF) design code

    图  3  APF加速器的电磁设计模型

    Figure  3.  Electromagnetic design of APF cavity

    图  4  小球微扰法测得的APF加速器加速电场

    Figure  4.  Cold test of APF cavity, using perturbation method

    图  5  CST模拟电场(绿色)与网络分析仪实测电场(蓝色)的对比

    Figure  5.  Comparison between CST simulated electric field (green) and network analyzer measured electric field (blue), the consistency index of integral field under this situation is 0.0296

    图  6  调试中的质子直线注入器和束诊系统

    Figure  6.  Linac injector and beam diagnostic system in commissioning

    图  7  理想粒子初始相位与最终能量的关系

    Figure  7.  Relation between initial phase and final energy of ideal particle

    图  8  示波器中的信号

    Figure  8.  Beam signal in oscilloscope

  • [1] Zhang Manzhou, Zhang Miao, Xie Xiucui, et al. Eddy current effects in a high field dipole[J]. Nuclear Science and Techniques, 2017, 28: 173. doi: 10.1007/s41365-017-0325-5
    [2] Xie Xiucui, Zhang Manzhou, Qiao Jian. The magnet sorting of APTRON[J]. Review of Scientific Instruments, 2020, 91: 014711. doi: 10.1063/1.5125177
    [3] 张满洲, 李浩虎, 李德明. 上海质子医疗装置的涡流效应[J]. 强激光与粒子束, 2011, 23(5):1357-1360. (Zhang Manzhou, Li Haohu, Li Deming. Estimate of eddy current effects in APTRON[J]. High Power Laser and Particle Beams, 2011, 23(5): 1357-1360 doi: 10.3788/HPLPB20112305.1357

    Zhang Manzhou, Li Haohu, Li Deming. Estimate of eddy current effects in APTRON[J]. High Power Laser and Particle Beams, 2011, 23(5): 1357-1360 doi: 10.3788/HPLPB20112305.1357
    [4] Yang Yuhui, Zhang Manzhou, Li Deming. Simulation study of slow extraction for the Shanghai Advanced Proton Therapy facility[J]. Nuclear Science and Techniques, 2017, 28: 120. doi: 10.1007/s41365-017-0273-0
    [5] Miao Chunhui, Liu Ming, Yin Chongxian, et al. Precise magnetic field control of the scanning magnets for the APTRON beam delivery system[J]. Nuclear Science and Techniques, 2017, 28: 172. doi: 10.1007/s41365-017-0324-6
    [6] Ren Haitao, Peng Shixiang, Lü Pengnan, et al. Intense beams from gases generated by a permanent magnet ECR ion source at PKU[J]. Review of Scientific Instruments, 2012, 83: 02B905. doi: 10.1063/1.3669788
    [7] Ma Pengfei, Zheng Shuxin, Yu Xudong, et al. Physical design of a single-amplifier-driven proton linac injector for a synchrotron-based proton-therapy system in China[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018, 900: 32-39.
    [8] Wangler T P. RF linear accelerators[M]. Weinheim: Wiley-VCH, 2008.
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    [11] Computer Simulation Technology AG. CST Studio Suite[M]. Stuttgart: Dassault Systemes, 2008.
    [12] Li Xuan, Pu Yuehu, Yang Fan, et al. RF design and study of a 325 MHz 7 MeV APF IH-DTL for an injector of a proton medical accelerator[J]. Nuclear Science and Techniques, 2019, 30: 135. doi: 10.1007/s41365-019-0657-4
    [13] Uriot D, Pichoff N. TraceWin documentation[M]. Paris: CEA/ SACLAY, 2011.
    [14] Xie Xiucui, Pu Yuehu, Yang Fan, et al. Design of a 7-MeV APF DTL with robust considerations[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2018, 908: 49-59.
    [15] 安超凡, 谢修璀, 蒲越虎. 粒子束团状态对测量束流发射度及能量的影响[J]. 强激光与粒子束, 2021, 33:114001. (An Chaofan, Xie Xiucui, Pu Yuehu. Effects of bunch state on measurement of beam emittance and energy[J]. High Power Laser and Particle Beams, 2021, 33: 114001

    An Chaofan, Xie Xiucui, Pu Yuehu. Effects of bunch state on measurement of beam emittance and energy[J]. High Power Laser and Particle Beams, 2021, 33: 114001
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出版历程
  • 收稿日期:  2022-01-06
  • 录用日期:  2022-04-11
  • 修回日期:  2022-04-11
  • 网络出版日期:  2022-04-18
  • 刊出日期:  2022-07-20

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