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Measurement of scintillation response of CsI[Na] to low-energy nuclear recoils by COHERENT

Authors
Akimov, D
An, P
Awe, C
Barbeau, PS
Becker, B
Belov, V
Bernardi, I
Blackston, MA
Bock, C
Bolozdynya, A
Browning, J
Cabrera-Palmer, B
Chernyak, D
Conley, E
Daughhetee, J
Detwiler, J
Ding, K
Durand, MR
Efremenko, Y
Elliott, SR
Fabris, L
Febbraro, M
Rosso, A Gallo
Galindo-Uribarri, A
Green, MP
Heath, MR
Hedges, S
Hoang, D
Hughes, M
Johnson, T
Khromov, A
Konovalov, A
Kozlova, E
Kumpan, A
Li, L
Link, JM
Liu, J
Mann, K
Markoff, DM
Mastroberti, J
Melikyan, YA
Mueller, PE
Newby, J
Parno, DS
Penttila, SI
Pershey, D
Rapp, R
Ray, H
Raybern, J
Razuvaeva, O
Reyna, D
Rich, GC
Ross, J
Rudik, D
Runge, J
Salvat, DJ
Salyapongse, AM
Scholberg, K
Shakirov, A
Simakov, G
Sinev, G
Snow, WM
Sosnovstsev, V
Suh, B
Tayloe, R
Tellez-Giron-Flores, K
Tolstukhin, I
Ujah, E
Vanderwerp, J
Varner, RL
Virtue, CJ
Visser, G
Wongjirad, T
Yen, Y-R
Yoo, J
Yu, C-H
Zettlemoyer, J
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Abstract
We present results of several measurements of CsI[Na] scintillation response to 3-60 keV energy nuclear recoils performed by the COHERENT collaboration using tagged neutron elastic scattering experiments and an endpoint technique. Earlier results, used to estimate the coherent elastic neutrino-nucleus scattering (CEvNS) event rate for the first observation of this process achieved by COHERENT at the Spallation Neutron Source (SNS), have been reassessed. We discuss corrections for the identified systematic effects and update the respective uncertainty values. The impact of updated results on future precision tests of CEvNS is estimated. We scrutinize potential systematic effects that could affect each measurement. In particular we confirm the response of the H11934-200 Hamamatsu photomultiplier tube (PMT) used for the measurements presented in this study to be linear in the relevant signal scale region.
Type
Journal article
Subject
physics.ins-det
physics.ins-det
Permalink
https://hdl.handle.net/10161/23986
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Scholars@Duke

Barbeau

Phillip S. Barbeau

Associate Professor of Physics
Professor Barbeau’s research interests are predominantly in the fields of neutrino and astroparticle physics. His efforts are focused on (but not limited to) three major areas of research: studying the physics of coherent neutrino-nucleus scattering; novel searches for the dark matter in our universe; and searches for zero neutrino double beta decay. The unifying aspect of the work is the common need for new and creative detector development in order to solve some of the “hard”
Scholberg

Kate Scholberg

Arts & Sciences Distinguished Professor of Physics
Prof. Scholberg's broad research interests include experimental elementary particle physics, astrophysics and cosmology. Her main specific interests are in neutrino physics: she studies neutrino oscillations with the Super-Kamiokande experiment, a giant underground water Cherenkov detector located in a mine in the Japanese Alps. Super-K was constructed to search for proton decay and to study neutrinos from the sun, from cosmic ray collisions in the atmosphere, and from supernovae. On Super-K, Pr
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