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BEPCⅡ超导腔失效分析

肖麟阁 戴建枰 王群要 林海英 马强 米正辉 孙毅 王洪磊

肖麟阁, 戴建枰, 王群要, 等. BEPCⅡ超导腔失效分析[J]. 强激光与粒子束, 2019, 31: 085105. doi: 10.11884/HPLPB201931.190078
引用本文: 肖麟阁, 戴建枰, 王群要, 等. BEPCⅡ超导腔失效分析[J]. 强激光与粒子束, 2019, 31: 085105. doi: 10.11884/HPLPB201931.190078
Xiao Linge, Dai Jianping, Wang Qunyao, et al. Analysis of the failure of BEPCⅡ SRF cavities[J]. High Power Laser and Particle Beams, 2019, 31: 085105. doi: 10.11884/HPLPB201931.190078
Citation: Xiao Linge, Dai Jianping, Wang Qunyao, et al. Analysis of the failure of BEPCⅡ SRF cavities[J]. High Power Laser and Particle Beams, 2019, 31: 085105. doi: 10.11884/HPLPB201931.190078

BEPCⅡ超导腔失效分析

doi: 10.11884/HPLPB201931.190078
基金项目: 

国家自然科学基金项目 11575216

详细信息
    作者简介:

    肖麟阁(1994—), 男, 博士研究生, 从事射频超导技术研究, xiaolg@ihep.ac.cn

    通讯作者:

    戴建枰(1968—), 男, 博士, 研究员, 从事加速器物理与技术研究, jpdai@ihep.ac.cn

  • 中图分类号: TN815

Analysis of the failure of BEPCⅡ SRF cavities

  • 摘要: 以北京正负电子对撞机(BEPCII)超导腔为例,通过监测运行中超导腔的主要参数,如腔压、输入功率、调谐角等,并与理论计算相比较的方法,对超导腔失效常见的几种原因,包括:高频系统硬件故障、束流丢失以及调谐器机械运动不畅等,进行了分析,重点解决了调谐器机械运动不畅导致超导腔失效这一比较复杂的问题。这些分析为减少BEPCII高频故障,增加BEPCII运行可靠性提供了重要参考。
  • 图  1  BEPCII高频系统硬件故障导致超导腔失效及丢束的典型图片

    Figure  1.  Typical images of BEPCII RF system hardware failure leading to superconducting cavity failure and beam loss

    图  2  BEPCII束流快速丢失,调谐器来不及动作时,调谐角随流强的变化

    Figure  2.  Tuning angle changes with the current intensity while the beam in BEPCII is rapidly lost and the tuner has no time to react

    图  3  BEPCII束流快速丢失,调谐器来不及动作时,所需输入功率随流强的变化

    Figure  3.  Required input power varies with the current intensity while the beam in BEPCII is rapidly lost and the tuner has no time to react

    图  4  束流先丢失导致超导腔失效的典型图片

    Figure  4.  Typical image of the failure of the superconducting cavity when the beam is lost first

    图  5  西腔调谐器机械运动不畅导致超导腔失效的典型图片

    Figure  5.  Typical image of the west superconducting cavity failure due to mechanical failure of the tuner

    图  6  BEPCII 1.86 GeV能量下,西腔腔压1.5 MV时,Robinson流强限随调谐角的变化

    Figure  6.  Robinson current limit varies with the loading angle when the beam energy is 1.86 GeV and the voltage of west cavity is 1.5 MV

    图  7  BEPCII西腔调谐器工作原理图

    Figure  7.  Schematic diagram of the west superconducting cavity in BEPCII

  • [1] 陈和生, 李卫国, 张闯. 从BEPC到BEPCⅡ[J]. 现代物理知识, 2018, 30(5): 57-61. https://www.cnki.com.cn/Article/CJFDTOTAL-XDWZ201805015.htm

    Chen Hesheng, Li Weiguo, Zhang Chuang. From BEPC to BEPCⅡ. Mordern Physics, 2018, 30(5): 57-61 https://www.cnki.com.cn/Article/CJFDTOTAL-XDWZ201805015.htm
    [2] Wang Guangwei, Sha Peng, Pan Weimin, et al. Construction of the BEPCⅡ RF system[J]. Chinese Physics C, 2008, 32(S1): 169-171.
    [3] Huang Tongming, Lin Haiying, Sun Yi, et al. Some experiences with BEPCⅡ SRF system operation[J]. Chinese Physics C, 2016, 40: 067001. doi: 10.1088/1674-1137/40/6/067001
    [4] MiZhenghui, Sun Yi, Pan Weimin, et al. A tuning system for BEPCⅡ[J]. Chinese Physics C, 2013, 37: 087003. doi: 10.1088/1674-1137/37/8/087003
    [5] 米正辉, 沙鹏, 孙毅, 等. BEPCⅡ国产500 MHz超导腔运行综述[J]. 强激光与粒子束, 2018, 30: 085103. doi: 10.11884/HPLPB201830.170485

    Mi Zhenghui, Sha Peng, Sun Yi, et al. Review on the operation of 500 MHz superconducting cavity made in china in BEPCⅡ. High Power Laser and Particle Beams, 2018, 30: 085103 doi: 10.11884/HPLPB201830.170485
    [6] Mi Zhenghui, Sun Yi, Wang Guangwei, et al. Horizontal test for BEPCⅡ 500 MHz spare cavity[J]. Chinese Physics C, 2012, 36(10): 996-999. doi: 10.1088/1674-1137/36/10/014
    [7] Wilson P B, Griffin J E. High energy electron linacs: applications to storage ring RF systems and linear colliders[R]. SLAC-PUB-2884, 1982.
    [8] Patrick K, et al. RF feedback for beam loading compensation in the SLC damping rings[C]//Proceedings of International Conference on Particle Accelerators. Washington D.C., USA: IEEE. 1993: 2370-2372.
    [9] Pedersen F. Beam loading effects in the CERN PS booster[J]. IEEE Trans Nucl Sci, 1975, 22(3): 1906-1909. doi: 10.1109/TNS.1975.4328024
    [10] Robinson K W. Stability of beams in radiofrequency systems[R]. CEAL-1010, 1964.
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出版历程
  • 收稿日期:  2019-03-21
  • 修回日期:  2019-05-21
  • 刊出日期:  2019-08-15

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