Detection of Scintillation Light of Liquid Xenon with a LAAPD
V. N. Solovov, A. Hitachi, V. Chepel, M. I. Lopes, R. Ferreira Marques, A. J. P. L. Policarpo
Abstract
First observation of liquid xenon scintillation due to alpha-particles and gamma-rays with a large area avalanche photodiode immersed in the liquid is reported. An energy resolution of 10% (FWHM) and a coincidence time resolution of less then 1 ns (FWHM) were measured with 5.5 MeV alpha-particles and 511 keV gamma-rays, respectively. The quantum efficiency of the photodiode for xenon scintillation light (wavelength 178 nm) is estimated to be ~100%.
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