Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2020, Vol. 31 ›› Issue (4): 40 doi: 10.1007/s41365-020-0743-7


A non-invasive Ionization Profile Monitor for transverse beam cooling and orbit oscillation study in HIRFL-CSR

Hong-Ming Xie1 , Ke-Wei Gu 1 , Yuan Wei1, 2 , Yong Zhang 1 Guang-Yu Zhu1 Long Jing1, 2 ,Zhi-Xue Li 1, Li-Li Li 1, Xue-Jing Hu1 , Li-Jun Mao1 , Ze Du1,  Jun-Xia Wu 1   

  1. 1 Institute of Modern Physics, Chinese Academy of Sciences, Beam Feedback and Machine Protection Group, Lanzhou 730000, China
    University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2019-11-01 Revised:2020-02-13 Accepted:2020-02-16
  • Contact: Ze Du
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No. 11805250).
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Hong-Ming Xie, Ke-Wei Gu, Yuan Wei, Yong Zhang, Guang-Yu Zhu, Long Jing, Zhi-Xue Li, Li-Li Li, Xue-Jing Hu, Li-Jun Mao, Ze Du, Jun-Xia Wu. A non-invasive Ionization Profile Monitor for transverse beam cooling and orbit oscillation study in HIRFL-CSR.Nuclear Science and Techniques, 2020, 31(4): 40     doi: 10.1007/s41365-020-0743-7

Abstract: A non-invasive Ionization Profile Monitor (IPM) consisting of Micro Channel Plates, a phosphor screen and the optical-signal acquisition has been developed at the cooling storage ring of Heavy Ion Research Facility in Lanzhou (HIRFL-CSR). It makes the real-time profile measurements for the transverse beam cooling and orbit oscillation possible and efficient. This paper firstly describes all the IPM design criterions including the theoretical signal yield calculation, the space charge field and initial momentum evaluation, and the electrostatic field distortion simulation as well. In order to investigate the IPM performance, the beam profile measurements are done with different high voltage settings. Subsequently, some valuable beam experiments about the transverse electron cooling and orbit oscillation study are also presented. In the end, fast turn-by-turn profile measurements for the emittance blow-up research in a synchrotron are discussed. In cooperation with the newly deployed emittance instruments at the HIRFL-CSR injector, the IPM shows great prospects for the injection mismatch study, and potential values for the tune, dispersion and chromaticity measurements as well.

Key words: IPM, Beam profile, Electron cooling, Transverse emittance, Orbit oscillation, Injection mismatch