EXO-200 uses 468 large area avalanche photodiodes (LAAPDs) for detection of scintillation light in an ultra-low-background liquid xenon (LXe) detector. We describe initial measurements of dark noise, gain and response to xenon scintillation light of LAAPDs at temperatures from room temperature to 169K - the temperature of liquid xenon. We also describe the individual characterization of more than 800 LAAPDs for selective installation in the EXO-200 detector.
@article{arxiv.0906.2499,
title = {Characterization of large area APDs for the EXO-200 detector},
author = {R. Neilson and F. LePort and A. Pocar and K. Kumar and A. Odian and C. Y. Prescott and V. Tenev and N. Ackerman and D. Akimov and M. Auger and C. Benitez-Medina and M. Breidenbach and A. Burenkov and R. Conley and S. Cook and R. deVoe and M. J. Dolinski and W. Fairbank and J. Farine and P. Fierlinger and B. Flatt and R. Gornea and G. Gratta and M. Green and C. Hall and K. Hall and D. Hallman and C. Hargrove and S. Herrin and J. Hodgson and L. J. Kaufman and A. Kovalenko and D. S. Leonard and D. Mackay and B. Mong and M. Montero Diez and E. Niner and K. O'Sullivan and A. Piepke and P. C. Rowson and D. Sinclair and K. Skarpaas and S. Slutsky and V. Stekhanov and V. Strickland and K. Twelker and J. -L. Vuilleumier and K. Wamba and U. Wichoski and J. Wodin and L. Yang and Y. -R. Yen},
journal= {arXiv preprint arXiv:0906.2499},
year = {2011}
}