Avalanche Photodiode for liquid xenon scintillation: quantum efficiency and gain

Details Avalanche Photodiode for liquid xenon scintillation: quantum efficiency and gain Avalanche Photodiode for liquid xenon scintillation: quantum efficiency and gain

Jan 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jinst...4.1005s&link_type=abstract

Journal of Instrumentation, Volume 01, Issue 01, pp. 01005 (2009).

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We report on measurements with a large area, silicon Avalanche Photodiode (APD) as photodetector for the ultraviolet scintillation light of liquid xenon (LXe) at temperatures between 167 and 188 K. The maximum gain of the APD for the scintillation light from a 210Po α-source in LXe was 5.3 × 103. Based on the geometry of the setup, the quantum efficiency of the APD was measured at 34% ± 5% at the mean scintillation wavelength of 178 nm. The high quantum efficiency and high gain of the APD make it an attractive alternative UV photon sensor to PMTs for LXe detectors, especially for experiments requiring high light yields, such as dark matter searches for Weakly Interacting Massive Particles, or a Compton telescope in MeV γ-ray astronomy.

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