A fast high-voltage switching multiwire proportional chamber

作者：Natori, H.^*; Teshima, N.; Aoki, M.; Nishiguchi, H.; Nguyen, T. D.; Takezaki, Y.; Furuya, Y.; Ito, S.; Mihara, S.; Nagao, D.; Nakatsugawa, Y.; Nguyen, T. M.; Seiya, Y.; Shimizu, K.; Yamamoto, K.

来源：Progress of Theoretical and Experimental Physics, 2017, 2017(2): 023C01.

DOI：10.1093/ptep/ptw193

A new experiment, called DeeMe, which is designed to search for mu-e conversions with a sensitivity of O(10(-14)), is in preparation at the Japan Proton Accelerator Research Complex (J-PARC). It utilizes a high-quality pulsed proton beam from the Rapid Cycling Synchrotron at J-PARC. The detector for DeeMe must tolerate large pulses of prompt charged particles whose instantaneous hit rate is as large as 70 GHzmm(-2) in a time width of 200 ns, and detect a single electron that arrives with delayed timing on the order of microseconds. A special wire chamber has been developed with a new dynamic gain control technique that reduces space charge effects. In this paper, we detail the novel detector scheme and operation verification.

• 出版日期2017-2