Design of a nitrogen purification system with cryogenic method for neutrino detection

Zhang Peng; Hu Zhongjun; Wang Bingming; Li Qing

doi:10.1016/j.apradiso.2018.04.009

Design of a nitrogen purification system with cryogenic method for neutrino detection

Appl Radiat Isot. 2018 Jul:137:194-198. doi: 10.1016/j.apradiso.2018.04.009. Epub 2018 Apr 4.

Authors

Zhang Peng¹, Hu Zhongjun², Wang Bingming³, Li Qing²

Affiliations

¹ School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
² State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
³ State Key Laboratory of Technologies in Space Cryogenic Propellants, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China. Electronic address: bmwang@mail.ipc.ac.cn.

PMID: 29655124
DOI: 10.1016/j.apradiso.2018.04.009

Abstract

In order to detect the neutrino with liquid scintillation detector, high-purity nitrogen is essential for gas stripping in this detector. Therefore, it is necessary to design a purification system for the detector to purify nitrogen. Using the method of low temperature adsorption for the purification system, the key designs including the flow path, the adsorber and the selection of activated carbon, are introduced in this study. In these designs, the selection of activated carbon is the most important because the adsorption characteristic of the carbon is related to the performance of the purification system. The method of grand canonical ensemble Monte Carlo is adopted to simulate the adsorption of radon by the activated carbon with its slit pore model. Using this method, the working temperature and the key characteristic of the activated carbon are obtained.

Keywords: Cryogenic; Liquid scintillator; Monte Carlo; Nitrogen; Purification system.