Imperial College London

ProfessorTimothySumner

Faculty of Natural SciencesDepartment of Physics

Professor of Experimental Astrophysics
 
 
 
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Contact

 

+44 (0)20 7594 7552t.sumner

 
 
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Location

 

1108Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Akerib:2018:10.1103/PhysRevD.97.112002,
author = {Akerib, DS and Alsum, S and Araujo, HM and Bai, X and Bailey, AJ and Balajthy, J and Beltrame, P and Bernard, EP and Bernstein, A and Biesiadzinski, TP and Boulton, EM and Bras, P and Byram, D and Carmona-Benitez, MC and Chan, C and Currie, A and Cutter, JE and Davison, TJR and Dobi, A and Druszkiewicz, E and Edwards, BN and Fallon, SR and Fan, A and Fiorucci, S and Gaitskell, RJ and Genovesi, J and Ghag, C and Gilchriese, MGD and Hall, CR and Haselschwardt, SJ and Hertel, SA and Hogan, DP and Horn, M and Huang, DQ and Ignarra, CM and Jacobsen, RG and Ji, W and Kamdin, K and Kazkaz, K and Khaitan, D and Knoche, R and Lenardo, BG and Lesko, KT and Liao, J and Lindote, A and Lopes, MI and Manalaysay, A and Mannino, RL and Marzioni, MF and McKinsey, DN and Mei, D-M and Mock, J and Moongweluwan, M and Morad, JA and Murphy, ASJ and Nehrkorn, C and Nelson, HN and Neves, F and O'Sullivan, K and Oliver-Mallory, KC and Palladino, KJ and Pease, EK and Rhyne, C and Shaw, S and Shutt, TA and Silva},
doi = {10.1103/PhysRevD.97.112002},
journal = {PHYSICAL REVIEW D},
title = {Liquid xenon scintillation measurements and pulse shape discrimination in the LUX dark matter detector},
url = {http://dx.doi.org/10.1103/PhysRevD.97.112002},
volume = {97},
year = {2018}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Weakly interacting massive particles (WIMPs) are a leading candidate for dark matter and are expected to produce nuclear recoil (NR) events within liquid xenon time-projection chambers. We present a measurement of the scintillation timing characteristics of liquid xenon in the LUX dark matter detector and develop a pulse shape discriminant to be used for particle identification. To accurately measure the timing characteristics, we develop a template-fitting method to reconstruct the detection times of photons. Analyzing calibration data collected during the 2013–2016 LUX WIMP search, we provide a new measurement of the singlet-to-triplet scintillation ratio for electron recoils (ER) below 46 keV, and we make, to our knowledge, a first-ever measurement of the NR singlet-to-triplet ratio at recoil energies below 74 keV. We exploit the difference of the photon time spectra for NR and ER events by using a prompt fraction discrimination parameter, which is optimized using calibration data to have the least number of ER events that occur in a 50% NR acceptance region. We then demonstrate how this discriminant can be used in conjunction with the charge-to-light discrimination to possibly improve the signal-to-noise ratio for nuclear recoils.
AU - Akerib,DS
AU - Alsum,S
AU - Araujo,HM
AU - Bai,X
AU - Bailey,AJ
AU - Balajthy,J
AU - Beltrame,P
AU - Bernard,EP
AU - Bernstein,A
AU - Biesiadzinski,TP
AU - Boulton,EM
AU - Bras,P
AU - Byram,D
AU - Carmona-Benitez,MC
AU - Chan,C
AU - Currie,A
AU - Cutter,JE
AU - Davison,TJR
AU - Dobi,A
AU - Druszkiewicz,E
AU - Edwards,BN
AU - Fallon,SR
AU - Fan,A
AU - Fiorucci,S
AU - Gaitskell,RJ
AU - Genovesi,J
AU - Ghag,C
AU - Gilchriese,MGD
AU - Hall,CR
AU - Haselschwardt,SJ
AU - Hertel,SA
AU - Hogan,DP
AU - Horn,M
AU - Huang,DQ
AU - Ignarra,CM
AU - Jacobsen,RG
AU - Ji,W
AU - Kamdin,K
AU - Kazkaz,K
AU - Khaitan,D
AU - Knoche,R
AU - Lenardo,BG
AU - Lesko,KT
AU - Liao,J
AU - Lindote,A
AU - Lopes,MI
AU - Manalaysay,A
AU - Mannino,RL
AU - Marzioni,MF
AU - McKinsey,DN
AU - Mei,D-M
AU - Mock,J
AU - Moongweluwan,M
AU - Morad,JA
AU - Murphy,ASJ
AU - Nehrkorn,C
AU - Nelson,HN
AU - Neves,F
AU - O'Sullivan,K
AU - Oliver-Mallory,KC
AU - Palladino,KJ
AU - Pease,EK
AU - Rhyne,C
AU - Shaw,S
AU - Shutt,TA
AU - Silva,C
AU - Solmaz,M
AU - Solovov,VN
AU - Sorensen,P
AU - Sumner,TJ
AU - Szydagis,M
AU - Taylor,DJ
AU - Taylor,WC
AU - Tennyson,BP
AU - Terman,PA
AU - Tiedt,DR
AU - To,WH
AU - Tripathi,M
AU - Tvrznikova,L
AU - Utku,U
AU - Uvarov,S
AU - Velan,V
AU - Verbus,JR
AU - Webb,RC
AU - White,JT
AU - Whitis,TJ
AU - Witherell,MS
AU - Wolfs,FLH
AU - Xu,J
AU - Yazdani,K
AU - Young,SK
AU - Zhang,C
DO - 10.1103/PhysRevD.97.112002
PY - 2018///
SN - 2470-0010
TI - Liquid xenon scintillation measurements and pulse shape discrimination in the LUX dark matter detector
T2 - PHYSICAL REVIEW D
UR - http://dx.doi.org/10.1103/PhysRevD.97.112002
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000434764200001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/60395
VL - 97
ER -