K. Lung, K. Arisaka, A. Bargetzi, P. Beltrame, A. Cahill, T. Genma, C. Ghag, D. Gordon, J. Sainz, A. Teymourian, Y. Yoshizawa
The Hamamatsu R11410-10 PMT has been tested extensively at UCLA and Hamamatsu
for use in future ton-scale dual-phase xenon dark matter detectors. The
R11410-10 PMT has been shown to have a quantum efficiency of greater than 30%
at xenon scintillation wavelengths, a radioactivity of 20.4 mBq/piece and a
dark count rate of 50 Hz at 0.3 photoelectron threshold. These results in
conjunction with the high gain (up to 10^7), good single photoelectron
resolution and stability at low temperature provide a satisfactory photosensor
for the future of low background event searches.
View original:
http://arxiv.org/abs/1202.2628
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