Transverse emittance measurement for the Heavy Ion Medical Machine cyclotron

Yong-Chun Feng; Min Li; Rui-Shi Mao; Bing Wang; Sheng-Peng Li; Wei-Long Li; Wei-Nian Ma; Xin-Cai Kang; Jin-Quan Zhang; Peng Li; Tie-Cheng Zhao; Zhi-Guo Xu; You-Jin Yuan

doi:10.1007/s41365-019-0699-7

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Transverse emittance measurement for the Heavy Ion Medical Machine cyclotron

ACCELERATOR, RAY TECHNOLOGY AND APPLICATIONS | Updated：2021-02-01

- Transverse emittance measurement for the Heavy Ion Medical Machine cyclotron
- Nuclear Science and Techniques Vol. 30, Issue 12, Article number: 184(2019)
- Affiliations：
  
  1.Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  2.School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
  3.Lanzhou Ke jin tai ji Corporation, LTD, Lanzhou 730000, China
  4.Lanzhou University of Technology, Lanzhou 730050, China
- Author bio：
  
  Corresponding author, maorsh@impcas.ac.cn
- Funds：
- DOI：10.1007/s41365-019-0699-7
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Yong-Chun Feng, Min Li, Rui-Shi Mao, et al. Transverse emittance measurement for the Heavy Ion Medical Machine cyclotron. [J]. Nuclear Science and Techniques 30(12):184(2019)
DOI：

Yong-Chun Feng, Min Li, Rui-Shi Mao, et al. Transverse emittance measurement for the Heavy Ion Medical Machine cyclotron. [J]. Nuclear Science and Techniques 30(12):184(2019) DOI： 10.1007/s41365-019-0699-7.

摘要

Abstract

The transverse emittance of the extracted beam from the Heavy Ion Medical Machine cyclotron is measured and then optimized for injection into the synchrotron. For the purposes of cross validation, three methods, i.e., slit-grid, Q-scan, and 3-grid, are used to measure the emittance. In the slit-grid technique, an automatic selection of the region of interest is adopted to isolate the major noise from the beam phase space, which is an improvement over the traditional technique. After iterating over the contour level, an unbiased measurement of the emittance can be obtained. An improvement of the thin lens technique is implemented in the Q-scan method. The results of these measurements are presented.

关键词

Keywords

Heavy Ion Medical MachineTransverse emittanceSlit-grid

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National Synchrotron Radiation Laboratory, University of Science and Technology of China

Institute of Modern Physics, Chinese Academy of Sciences, Beam Feedback and Machine Protection Group

University of Chinese Academy of Sciences

School of Nuclear Science and Technology & National Synchrotron Radiation Laboratory, University of Science and Technology of China

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