A compensated coaxial Faraday cup for absolute bunched proton beam current determination

作者：Zhang Zhong Bing^*; Chen Liang; Liu Jin Liang; Zhang Xian Peng; Ruan Jin Lu; Liu Lin Yue; Ouyang Xiao Ping

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2014, 764: 257-260.

DOI：10.1016/j.nima.2014.07.051

• Response time
• Faraday cup
• Secondary electron emission
• Proton beam measurement

To measure the time structure and absolutely accurate amplitude of charged pulse particle beam for a Faraday cup is a challenge. To address this issue, we develop a Compensated Coaxial Fast Faraday Cup (CCFFC) which preserves the high-frequency component of the electrical signal generated by the pulsed charged particles. The CCEFC is designed to measure the absolute amplitude of the pulsed proton beam current. We discuss the compensation principle of the detector and evaluate its accuracy. The experimental results show a good agreement with the nominal beam current, with the difference less than 3% for the proton energy ranging from 2.5 to 10 MeV. The response time of the CCFFC is 128 ps.

• 出版日期2014-11-11
• 单位西北核技术研究所