Study on the large area MCP-PMT glass radioactivity reduction

doi:10.1016/j.nima.2018.05.008

	Study on the large area MCP-PMT glass radioactivity reduction
	He, JC; Liu SL(刘术林); Zhao J(赵洁); Zhang XT(张玄同); Wen LJ(温良剑); He JC(何金成); Hu T(胡涛); Zhang, XT; Wen, LJ; Zhao, J
刊名	NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
	2018
卷号	898 页码:67-71
关键词	JUNO MCP-PMT Radioactivity
ISSN号	0168-9002
DOI	10.1016/j.nima.2018.05.008
文献子类	Article
英文摘要	The Jiangmen Underground Neutrino Observatory (JUNO) will install approximately 18,000 20-inch Photomultiplier Tubes (PMTs) in the central detector. From the full detector Monte Carlo (MC) simulation, the PMT glass has one of the largest contribution to the natural radioactive background due to its large mass. Various techniques have been developed to reduce radioactivities introduced in the raw material and during the production process. Efforts such as low background raw material selection, dust and dirty water isolation and continuous production monitoring were taken to reduce the glass background. The radioactivity in the glass sample was measured using a low background gamma ray spectrometer equipped with a high-purity germanium (HPGe) detector. The average level of U-238, Th-232 and K-40 in total MCP-PMT glass now reach 2.5 Bq/kg for U-238, 0.5 Bq/kg for Th-232 and 0.5 Bq/kg for K-40, at least a factor of 2.5 lower than other type of 20-inch PMTs.
电子版国际标准刊号	1872-9576
WOS关键词	NEUTRINO EXPERIMENT ; DETECTOR ; BOREXINO
WOS研究方向	Instruments & Instrumentation ; Nuclear Science & Technology ; Physics
语种	英语
WOS记录号	WOS:000434781800010
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/286003]
专题	高能物理研究所_实验物理中心高能物理研究所_多学科研究中心
通讯作者	Zhao J(赵洁)
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	He, JC,Liu SL,Zhao J,et al. Study on the large area MCP-PMT glass radioactivity reduction[J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,2018,898:67-71.
APA	He, JC.,刘术林.,赵洁.,张玄同.,温良剑.,...&牛顺利.(2018).Study on the large area MCP-PMT glass radioactivity reduction.NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,898,67-71.
MLA	He, JC,et al."Study on the large area MCP-PMT glass radioactivity reduction".NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 898(2018):67-71.