DocumentCode :
469617
Title :
Dual-phase argon ionization detector for measurement of coherent elastic neutrino scattering and medium-energy nuclear recoils
Author :
Winant, C.D. ; Bernstein, Andrey ; Foxe, M. ; Hagmann, C. ; Jovanovic, Igor ; Kazkaz, K. ; Stoeffl, W.S.
Author_Institution :
Univ. of California, San Francisco
Volume :
3
fYear :
2007
fDate :
Oct. 26 2007-Nov. 3 2007
Firstpage :
2110
Lastpage :
2114
Abstract :
We propose to build and deploy a 10-kg dual-phase argon ionization detector for the detection of coherent neutrino- nucleus scattering, which is described by the reaction; nu + (Z,N) rarr nu + (Z,N), where v is the scattering neutrino, and (Z,N) is the target nucleus of atomic number Z and neutron number N. Its detection would validate central tenets of the standard model. We have built a gas-phase argon ionization detector to determine the feasibility of measuring the small recoil energies (~ 1 keV) predicted from coherent neutrino scattering, and to characterize the recoil spectrum of the argon nuclei induced by scattering from medium-energy neutrons. We present calibrations made with 55Fe, a low-energy X-ray source, and report on measurements to date of the recoil spectra from the 2-MeV LINAC Li-target neutron source at LLNL. A high signal-to-noise measurement of the recoil spectrum will not only serve as an important milestone in achieving the sensitivity necessary for measuring coherent neutrino-nucleus scattering, but will break new scientific ground on its own.
Keywords :
calibration; ionisation chambers; neutrino detection; neutrino-nucleus scattering; (neutrino,neutrino); calibration; coherent elastic neutrino scattering; dual-phase argon ionization detector; gas-phase argon ionization detector; medium-energy nuclear recoils; Argon; Atomic measurements; Calibration; Detectors; Energy measurement; Ionization; Neutrino sources; Neutrons; Nuclear measurements; X-ray scattering;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Nuclear Science Symposium Conference Record, 2007. NSS '07. IEEE
Conference_Location :
Honolulu, HI
ISSN :
1095-7863
Print_ISBN :
978-1-4244-0922-8
Electronic_ISBN :
1095-7863
Type :
conf
DOI :
10.1109/NSSMIC.2007.4436570
Filename :
4436570
Link To Document :
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