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25 April 2024

» arxiv » physics/0407033

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Absorption of Scintillation Light in a 100 $ell$ Liquid Xenon$gamma$ Ray Detector and Expected Detector Performance
A.Baldini ; C.Bemporad ; F.Cei ; T.Doke ; M.Grassi ; A.A.Grebenuk ; D.N.Grigoriev ; T.Haruyama ; K.Kasami ; J.Kikuchi ; A.Maki ; T.Mashimo ; S.Mihara ; T.Mitsuhashi ; T.Mori ; D.Nicolo` ; H.Nishiguchi ; W.Ootani ; K.Ozone ; A.Papa ; R.Pazzi ; S.Ritt ; R.Sawada ; F.Sergiampietri ; G.Signorelli ; S.Suzuki ; K.Terasawa ; M.Yamashita ; S.Yamashita ; T.Yoshimura ; Yu.Yuri ;
Date:	7 Jul 2004
Journal:	Nucl.Instrum.Meth. A545 (2005) 753-764
Subject:	Instrumentation and Detectors \| physics.ins-det hep-ex
Abstract:	An 800L liquid xenon scintillation $gamma$ ray detector is being developed for the MEG experiment which will search for $mu^+ omathrm{e}^+gamma$ decay at the Paul Scherrer Institut. Absorption of scintillation light of xenon by impurities might possibly limit the performance of such a detector. We used a 100L prototype with an active volume of 372x372x496 mm$^3$ to study the scintillation light absorption. We have developed a method to evaluate the light absorption, separately from elastic scattering of light, by measuring cosmic rays and $alpha$ sources. By using a suitable purification technique, an absorption length longer than 100 cm has been achieved. The effects of the light absorption on the energy resolution are estimated by Monte Carlo simulation.
Source:	arXiv, physics/0407033
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