2006/11/28 by Clemens B. Winkelmann, C. B. Winkelmann, Johannes Elbs +6 · 2 citations
Physics and Astronomy · #Atomic and Subatomic Physics Research #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #astro-ph #cond-mat.supr-con #physics.ins-det
paper · pdf · doi:10.1016/j.nima.2007.01.180
published as Nucl.Instrum.Meth.A574:264-271,2007 · 17 pages, submitted to Nuc. Instr. Meth. A
arxiv created 2006/11/28 · openalex publication_date 2007/02/26 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on the calibration of a superfluid 3He bolometer developed for the search of non-baryonic Dark Matter. Precise thermometry is achieved by the direct measurement of thermal excitations using Vibrating Wire Resonators (VWRs). The heating pulses for calibration were produced by the direct quantum process of quasiparticle generation by other VWRs present. The bolometric calibration factor is analyzed as a function of temperature and excitation level of the sensing VWR. The calibration is compared to bolometric measurements of the nuclear neutron capture reaction and heat depositions by cosmic muons and low energy electrons. The comparison allows a quantitative estimation of the ultra-violet scintillation rate of irradiated helium, demonstrating the possibility of efficient electron recoil event rejection.