Absorption of scintillation light in a 100 l liquid xenon γ-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. Nicolò, H. Nishiguchi, W. Ootani, K. Ozone, A. PapaR. Pazzi, S. Ritt, R. Sawada, F. Sergiampietri, G. Signorelli, S. Suzuki, K. Terasawa, M. Yamashita, S. Yamashita, T. Yoshimura, Yu Yuri

Research output: Contribution to journalArticlepeer-review

83 Citations (Scopus)


An 800 l liquid xenon scintillation γ-ray detector is being developed for the MEG experiment which will search for μ+→e+γ 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 100 l prototype with an active volume of 372×372×496mm3 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 α 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.

Original languageEnglish
Pages (from-to)753-764
Number of pages12
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number3
Publication statusPublished - 2005 Jun 21
Externally publishedYes


  • Calorimeter
  • Liquid xenon
  • Purification
  • Scintillation detector

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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