dorsal/arxiv
View SchemaBolometric calibration of a superfluid $^3$He detector for Dark Matter search: direct measurement of the scintillated energy fraction for neutron, electron and muon events
| Authors | C. B. Winkelmann, J. Elbs, Yu. M. Bunkov, E. Collin, H. Godfrin, M. Krusius |
|---|---|
| Categories | |
| ArXiv ID | physics/0611273 |
| URL | https://arxiv.org/abs/physics/0611273 |
| DOI | 10.1016/j.nima.2007.01.180 |
| Journal | Nucl.Instrum.Meth.A574:264-271,2007 |
Abstract
We report on the calibration of a superfluid $^3$He 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.
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"abstract": "We report on the calibration of a superfluid $^3$He bolometer developed for\nthe search of non-baryonic Dark Matter. Precise thermometry is achieved by the\ndirect measurement of thermal excitations using Vibrating Wire Resonators\n(VWRs). The heating pulses for calibration were produced by the direct quantum\nprocess of quasiparticle generation by other VWRs present. The bolometric\ncalibration factor is analyzed as a function of temperature and excitation\nlevel of the sensing VWR. The calibration is compared to bolometric\nmeasurements of the nuclear neutron capture reaction and heat depositions by\ncosmic muons and low energy electrons. The comparison allows a quantitative\nestimation of the ultra-violet scintillation rate of irradiated helium,\ndemonstrating the possibility of efficient electron recoil event rejection.",
"arxiv_id": "physics/0611273",
"authors": [
"C. B. Winkelmann",
"J. Elbs",
"Yu. M. Bunkov",
"E. Collin",
"H. Godfrin",
"M. Krusius"
],
"categories": [
"physics.ins-det",
"astro-ph",
"cond-mat.supr-con"
],
"doi": "10.1016/j.nima.2007.01.180",
"journal_ref": "Nucl.Instrum.Meth.A574:264-271,2007",
"title": "Bolometric calibration of a superfluid $^3$He detector for Dark Matter search: direct measurement of the scintillated energy fraction for neutron, electron and muon events",
"url": "https://arxiv.org/abs/physics/0611273"
},
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