Preliminary test results of LAr prototype detector

Abstract

WIMPs are a well-motivated galactic dark matter candidate. Liquid argon (LAr) is an attractive target for the direct detection of WIMPs. The LAr prototype detector is designed to study the technology and property of LAr detector. The prototype detector have an active volume containing 0.65 kg of liquid argon. The liquid nitrogen(LN) cooling system allows the temperature of liquid argon to be maintained at the boiling point (87.8 K) with fluctuations less than 0.1 K. The prototype was calibrated with a Na${}^{22}$ source, with the light yield 1.591$\pm$0.019 p.e./keV for the 511 keV gamma rays using the domestic-made argon purification system.

4 pages, 5 figures

References in corpus (4)

• Planck 2013 results. XVI. Cosmological parameters
• First results from a Dark Matter search with liquid Argon at 87 K in the Gran Sasso Underground Laboratory
• First limits on WIMP nuclear recoil signals in ZEPLIN-II: a two phase xenon detector for dark matter detection
• Radon backgrounds in the DEAP-1 liquid-argon-based Dark Matter detector

Cited by in corpus (1)

• Calibration of liquid argon detector with ${}^{83m}Kr$ and ${}^{22}Na$ in different drift field