Neutron beam monitor based on a boron-coated GEM

• 来源期刊: 中国物理C(英文版)
• 学科: 物理学
• 年，卷（期）: 2011,（7）
• 页码范围: 668-674
• 页数: 7页
• 分类号: O571.53
• 语种: 英文
• DOI: 10.1088/1674-1137/35/7/012

摘要

A new thermal neutron beam monitor with a Gas Electron Multiplier (GEM) is developed to meet the needs of the next generation of neutron facilities. A prototype chamber has been constructed with two 100 mm*100 mm GEM foils. Enriched boron-10 is coated on one surface of the aluminum cathode plate as the neutron convertor. 96 channel pads with an area of 8 mm*8 mm each are used for fast signal readout. In order to study the basic characteristics of a boron-coated GEM, several irradiation tests were carried ou...