2006/08/04 by K. Ni, E. Aprile, K. L. Giboni +4
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #Quantum, superfluid, helium dynamics #astro-ph #nucl-ex #physics.ins-det
paper · pdf · doi:10.1088/1748-0221/1/09/p09004
published as JINST1:P09004,2006
arxiv created 2006/08/04 · openalex publication_date 2006/09/21 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30
Scintillation light from gamma ray irradiation in liquid xenon is detected by two Hamamatsu R9288 photomultiplier tubes (PMTs) immersed in the liquid. UV light reflector material, PTFE, is used to optimize the light collection efficiency. The detector gives a high light yield of 6 photoelectron per keV (pe/keV), which allows efficient detection of the 122 keV γ-ray line from 57 Co, with a measured energy resolution of (8.8±0.6)% (σ). The best achievable energy resolution, by removing the instrumental fluctuations, from liquid xenon scintillation light is estimated to be around 6-8% (σ) for γ-ray with energy between 662 keV and 122 keV.