BROWSE

Related Scientist

cup's photo.

cup
지하실험연구단
more info

ITEM VIEW & DOWNLOAD

Development of thermal neutron shield with low radioactivity

Cited 0 time in webofscience Cited 0 time in scopus
273 Viewed 0 Downloaded
Title
Development of thermal neutron shield with low radioactivity
Author(s)
Dae Hun Ha; Go Woon Kim; Kim, H. J.; Kim, J. H.; Yeongduk Kim; Eun Kyoung Lee; Jaison Lee; Pendo Butogwa Nyanda; Park, H.; Su Yeon Park; Jee Won Seo; Eung Seok Yi; Yoon, Y. S.
Publication Date
2022-10
Journal
JOURNAL OF INSTRUMENTATION, v.17, no.10
Publisher
IOP Publishing Ltd
Abstract
The second phase of the Advanced Mo-based Rare process Experiment (AMoRE-II) searches for a neutrino-less double-beta decay of 100Mo. A background level in the region of interest of 3034 & PLUSMN; 10 keV is required to be lower than 10-4 count/(keV kg year). Neutrons can generate background signals by gamma-ray emitting reactions with AMoRE-II detector materials. Thermal neutron shields will be installed inside and outside the lead shield to reduce the neutron flux in the shielding system. The background radioactivity of the inner thermal neutron shield must be low because AMoRE-II requires a low background level. A thermal neutron shield with a high shielding efficiency and low radioactivity was produced by using boric acid powder and silicone rubber. The shielding efficiency was tested to be {99.2 +/- 0.25(stat)?0.47 -0.53(syst)}%, and the radioactivities of 40K, Ra-226, Ac-228, and Th-228 were measured to be < 9.2 at 90% C.L., 14.2 +/- 1.5, < 1.6 at 90% C.L., and 2.83 +/- 0.80 mBq/kg, respectively.
URI
https://pr.ibs.re.kr/handle/8788114/12620
DOI
10.1088/1748-0221/17/10/P10041
ISSN
1748-0221
Appears in Collections:
Center for Underground Physics(지하실험 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse