Development of a compact magnetic proton recoil spectrometer for measurement of deuterium-tritium neutrons

Jianfu Zhang; Xiaoping Ouyang; Suizheng Qiu; Guoguang Zhang; Jinlu Ruan; Xiaodong Zhang; Xianpeng Zhang; Shaohua Yang; Jiwen Song; Linyue Liu; Hongyun Li

doi:10.1063/1.4939010

Development of a compact magnetic proton recoil spectrometer for measurement of deuterium-tritium neutrons

Rev Sci Instrum. 2015 Dec;86(12):125115. doi: 10.1063/1.4939010.

Authors

Affiliations

¹ School of Nuclear Science and Technology, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China.
² Applied Institute of Nuclear Technology, China Institute of Atomic Energy, Beijing 102413, People's Republic of China.
³ Northwest Institute of Nuclear Technology, Xi'an 710024, People's Republic of China.

PMID: 26724081
DOI: 10.1063/1.4939010

Abstract

A new compact magnetic proton recoil (MPR) neutron spectrometer has been designed for precise measurement of deuterium-tritium (DT) neutrons. This design is presented emphasizing the magnetic analyzing system, which is based on a compact quadrupole-dipole (QD) electromagnet. The focal plane detector (FPD) is also discussed with respect to application for the next step. The characteristics of the MPR spectrometer were calculated by using Monte Carlo simulation. A preliminary experiment was performed to test the magnetic analyzing system and the proton images of the FPD. Since the QD electromagnet design allows for a larger foil thickness and solid angle to be utilized, the MPR spectrometer defined in this paper can achieve neutron detection efficiency more than 5 × 10(-7) at an energy resolution of 1.5% for measuring DT neutrons.