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Title: Solar axion search technique with correlated signals from multiple detectors

The coherent Bragg scattering of photons converted from solar axions inside crystals would boost the signal for axion-photon coupling enhancing experimental sensitivity for these hypothetical particles. Knowledge of the scattering angle of solar axions with respect to the crystal lattice is required to make theoretical predications of signal strength. Hence, both the lattice axis angle within a crystal and the absolute angle between the crystal and the Sun must be known. In this paper, we examine how the experimental sensitivity changes with respect to various experimental parameters. We also demonstrate that, in a multiple-crystal setup, knowledge of the relative axis orientation between multiple crystals can improve the experimental sensitivity, or equivalently, relax the precision on the absolute solar angle measurement. However, if absolute angles of all crystal axes are measured, we find that a precision of 2°–4° will suffice for an energy resolution of σ E = 0.04E and a flat background. Lastly, we also show that, given a minimum number of detectors, a signal model averaged over angles can substitute for precise crystal angular measurements, with some loss of sensitivity.
Authors:
ORCiD logo ;
Publication Date:
Report Number(s):
LA-UR-16-27798
Journal ID: ISSN 0927-6505; TRN: US1700932
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Astroparticle Physics
Additional Journal Information:
Journal Volume: 89; Journal Issue: C; Journal ID: ISSN 0927-6505
Publisher:
Elsevier
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 79 ASTRONOMY AND ASTROPHYSICS; Atomic and Nuclear Physics
OSTI Identifier:
1341867
Alternate Identifier(s):
OSTI ID: 1414788

Xu, Wenqin, and Elliott, Steven R. Solar axion search technique with correlated signals from multiple detectors. United States: N. p., Web. doi:10.1016/j.astropartphys.2017.01.008.
Xu, Wenqin, & Elliott, Steven R. Solar axion search technique with correlated signals from multiple detectors. United States. doi:10.1016/j.astropartphys.2017.01.008.
Xu, Wenqin, and Elliott, Steven R. 2017. "Solar axion search technique with correlated signals from multiple detectors". United States. doi:10.1016/j.astropartphys.2017.01.008. https://www.osti.gov/servlets/purl/1341867.
@article{osti_1341867,
title = {Solar axion search technique with correlated signals from multiple detectors},
author = {Xu, Wenqin and Elliott, Steven R.},
abstractNote = {The coherent Bragg scattering of photons converted from solar axions inside crystals would boost the signal for axion-photon coupling enhancing experimental sensitivity for these hypothetical particles. Knowledge of the scattering angle of solar axions with respect to the crystal lattice is required to make theoretical predications of signal strength. Hence, both the lattice axis angle within a crystal and the absolute angle between the crystal and the Sun must be known. In this paper, we examine how the experimental sensitivity changes with respect to various experimental parameters. We also demonstrate that, in a multiple-crystal setup, knowledge of the relative axis orientation between multiple crystals can improve the experimental sensitivity, or equivalently, relax the precision on the absolute solar angle measurement. However, if absolute angles of all crystal axes are measured, we find that a precision of 2°–4° will suffice for an energy resolution of σE = 0.04E and a flat background. Lastly, we also show that, given a minimum number of detectors, a signal model averaged over angles can substitute for precise crystal angular measurements, with some loss of sensitivity.},
doi = {10.1016/j.astropartphys.2017.01.008},
journal = {Astroparticle Physics},
number = C,
volume = 89,
place = {United States},
year = {2017},
month = {1}
}