LUX trigger efficiency

D S Akerib ,J.R Verbus,D Byram,F Neves,L Tvrznikova,A Lindote,M Moongweluwan,A Fan,S Uvarov,A Manalaysay,V Velan,N Marangou,E Druszkiewicz,W Ji,C Rhyne,K Kamdin,U Utku,P Beltrame,P Brás,D Khaitan,R Knoche,J Balajthy,S Alsum,C Nehrkorn,M Solmaz,C Ghag,J Genovesi,X Bai,M S Witherell ,K Kazkaz,H N Nelson ,K Yazdani,S Fiorucci,T J Whitis ,A St J Murphy ,H M Araújo ,C Zhang,R G Jacobsen ,R Webb ,T J R Davison ,M Szydagis,M Tripathi,Di Huang ,C Hall ,I Lopes ,R L Mannino ,M C Carmona-Benitez ,J Liao,C B Gwilliam ,S Kravitz ,P A Terman ,T Shutt ,J T White ,G R C Rischbieter ,E K Pease ,S A Hertel ,J Xu,F L H Wolfs ,B G Lenardo ,V Solovov ,E V Korolkova ,E M Boulton ,W H To ,C Silva,M Horn,D J Taylor ,D R Tiedt ,Wc Taylor ,C M Ignarra ,David I Woodward ,M F Marzioni ,E Grace ,Dongming Mei ,S Shaw,E P Bernard ,J A Morad ,D P Hogan ,R J Gaitskell ,C Chan,K J Palladino ,P Rossiter ,S J Haselschwardt ,S R Fallon ,K C Oliver-Mallory ,D N Mckinsey ,T P Biesiadzinski ,K T Lesko ,J E Cutter ,B P Tennyson ,T J Sumner ,S Burdin ,V A Kudryavtsev ,M Gilchriese ,B Boxer ,P Sørensen ,J Lin ,Adam Bernstein

doi:10.1016/j.nima.2018.07.094

LUX trigger efficiency

D S Akerib , J.R Verbus + Show 95 more

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https://doi.org/10.1016/j.nima.2018.07.094

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Journal: Nuclear Inst. and Methods in Physics Research, A	Publication Date: Aug 22, 2018
Citations: 2	License type: publisher-specific-oa

Affiliation: SLAC National Accelerator Laboratory, Case Western Reserve University, Stanford University, Kavli Institute for Particle Astrophysics and Cosmology, University of Edinburgh, South Dakota Science and Technology Authority, University of South Dakota, University at Albany, State University of New York, Albany State University, University of Coimbra, Pennsylvania State University, University of California, Davis, University of Rochester, University of Wisconsin–Madison, South Dakota School of Mines and Technology, University of California, Santa Barbara, Imperial College London, University of California, Berkeley, Texas A&M University, University of Maryland Extension, University of Liverpool, Lawrence Berkeley National Laboratory, State University of New York, University of Sheffield, Yale University, Brown University, Providence College, Lawrence Livermore National Laboratory

#Large Underground Xenon Experiment #Trigger Efficiency + Show 8 more

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Abstract

The Large Underground Xenon experiment (LUX) searches for dark matter using a dual-phase xenon detector. LUX uses a custom-developed trigger system for event selection. In this paper, the trigger efficiency, which is defined as the probability that an event of interest is selected for offline analysis, is studied using raw data obtained from both electron recoil (ER) and nuclear recoil (NR) calibrations. The measured efficiency exceeds 98% at a pulse area of 90 detected photons, which is well below the WIMP analysis threshold on the S2 pulse area. The efficiency also exceeds 98% at recoil energies of 0.2 keV and above for ER, and 1.3 keV and above for NR. The measured trigger efficiency varies between 99% and 100% over the fiducial volume of the detector.

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