Beam position monitors as precise phase pickups for beam energy measurement at the Compact Pulsed Hadron Source

Min-Wen Wang; Qing-Zi Xing; Shu-Xin Zheng; Zhong-Ming Wang; Meng-Tong Qiu; Xia-Ling Guan; Xue-Wu Wang; Wen-Hui Huang

doi:10.1007/s41365-019-0545-y

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Beam position monitors as precise phase pickups for beam energy measurement at the Compact Pulsed Hadron Source

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

- Beam position monitors as precise phase pickups for beam energy measurement at the Compact Pulsed Hadron Source
- Nuclear Science and Techniques Vol. 30, Issue 2, Article number: 23(2019)
- Affiliations：
  
  1.Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education, Beijing 100084, China
  2.Laboratory for Advanced Radiation Sources and Application, Tsinghua University, Beijing 100084, China
  3.Department of Engineering Physics, Tsinghua University, Beijing 100084, China
  4.State Key Laboratory of Intense Pulsed Radiation Simulation and Effect (Northwest Institute of Nuclear Technology), Xi’an 710024, China
- Author bio：
  
  Corresponding author, zhengsx@tsinghua.edu.cn
- Funds：
- DOI：10.1007/s41365-019-0545-y
  CLC：
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Min-Wen Wang, Qing-Zi Xing, Shu-Xin Zheng, et al. Beam position monitors as precise phase pickups for beam energy measurement at the Compact Pulsed Hadron Source. [J]. Nuclear Science and Techniques 30(2):23(2019)
DOI：

Min-Wen Wang, Qing-Zi Xing, Shu-Xin Zheng, et al. Beam position monitors as precise phase pickups for beam energy measurement at the Compact Pulsed Hadron Source. [J]. Nuclear Science and Techniques 30(2):23(2019) DOI： 10.1007/s41365-019-0545-y.

摘要

Abstract

The 13-MeV proton linac of the Compact Pulsed Hadron Source (CPHS) at Tsinghua University, China, is composed of a 50-keV electron cyclotron resonance proton source, a 3-MeV four-vane-type radio-frequency quadrupole (RFQ) accelerator, and a drift tube linac (DTL). Precise measurement of the beam energies at the exit of the RFQ and the DTL are critical for DTL commissioning. Two button-type beam position monitors (BPMs) installed downstream of the RFQ are used to perform the measurement using a time-of-flight method. The effects of several factors on phase measurement accuracy are analyzed. The phase measurement accuracy of the BPMs at CPHS is better than ±1.03° at 325 MHz after corrections, corresponding to an energy measurement error of ±0.07%. The beam energy measured at the exit of the RFQ is 2.994 ± 0.0022 MeV, which is consistent with the design value.

关键词

Keywords

Beam energyTime of flightBeam position monitorPhase pickup

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State Key Laboratory of Particle Detection and Electronics, and Department of Modern Physics, University of Science and Technology of China

State Key Laboratory of Particle Detection and Electronics, University of Science and Technology of China

State Key Laboratory of Particle Detection & Electronics

Anhui Key Laboratory of Physical Electronics, Department of Modern Physics, University of Science and Technology of China

Department of Engineering Physics, Tsinghua University;China Key Laboratory of Particle & Radiation Imaging (Tsinghua University), Ministry of Education

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