NDLI: Parameters research of coated MCP thermal neutron collimator

Content Provider	IEEE Xplore Digital Library
Author	Yigang Yang Nianhua Lu Yuanjing Li
Copyright Year	2009
Description	Author affiliation: Department of Engineering Physics, Tsinghua University, Beijing, P.R. China (Yigang Yang; Nianhua Lu; Yuanjing Li)
Abstract	In this paper, we present the parameter research of coated MCP as thermal neutron collimator. B2O3 and GdO3 are selected as coating materials to absorb thermal neutrons for their large cross-sections. Before coating, the effect of doping and coating is compared by simulation. Results show that coating can provide better collimation effect than doping. As the rocking curve of coated MCP looks like sawtooth, we define the first maximum point in rocking curve as the parameter responding to the collimation effect of MCP. The parameters of coating materials, coating thickness, pore diameter, pitch, thickness of MCP are varied to achieve better collimation effect. Contour plot of transmission probability is used to evaluate the performance of MCP collimation. With a market available MCP of 13.5μm pore diameter, 16.25μm pitch and 510μm pore length, 1μm of GdO3 coating may implement the collimation result of 0.02 (transmission probability of 25.3 neutron that should be shielded). Two coated MCP collimators and one BF neutron counter are used to setup an experiment to measure the rocking curve.
Starting Page	1259
Ending Page	1261
File Size	216143
Page Count	3
File Format	PDF
ISBN	9781424439614
ISSN	10957863
DOI	10.1109/NSSMIC.2009.5402367
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-10-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Neutrons Collimators Coatings Doping Glass Boron Nuclear and plasma sciences Counting circuits Etching Semiconductor process modeling
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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