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Journal article
Observation of the dependence on drift field of scintillation from nuclear recoils in liquid argon
Physical review. D, Particles, fields, gravitation, and cosmology, v 88(9), 92006
26 Nov 2013
Abstract
We have exposed a dual-phase liquid argon time projection chamber (LAr-TPC) to a low energy pulsed narrow-band neutron beam, produced at the Notre Dame Institute for Structure and Nuclear Astrophysics, to study the scintillation light yield of recoiling nuclei. Liquid scintillation counters were arranged to detect and identify neutrons scattered in the LAr-TPC and to select the energy of the recoiling nuclei. We report the observation of a significant dependence (up to 32%) on the drift field of liquid argon scintillation from nuclear recoils of energies between 10.8 and 49.9 keV. The field dependence is stronger at lower energies. Since it is the first measurement of such an effect in liquid argon, this observation is important because, to date, estimates of the sensitivity of LAr-TPC dark matter searches are based on the assumption that the electric field has only a small effect on the light yield from nuclear recoils.
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Details
- Title
- Observation of the dependence on drift field of scintillation from nuclear recoils in liquid argon
- Creators
- T. Alexander - Fermi National Accelerator LaboratoryH. O. Back - Princeton UniversityH. Cao - Princeton UniversityA. G. Cocco - University of Naples Federico IIF. DeJongh - Fermi National Accelerator LaboratoryG. Fiorillo - University of Naples Federico IIC. Galbiati - Princeton UniversityL. Grandi - University of ChicagoC. Kendziora - Fermi National Accelerator LaboratoryW. H. Lippincott - Fermi National Accelerator LaboratoryB. Loer - Fermi National Accelerator LaboratoryC. Love - Temple UniversityL. Manenti - University College LondonC. J. Martoff - Temple UniversityY. Meng - University of California, Los AngelesD. Montanari - Fermi National Accelerator LaboratoryP. Mosteiro - Princeton UniversityD. Olvitt - Temple UniversityS. Pordes - Fermi National Accelerator LaboratoryH. Qian - Princeton UniversityB. Rossi - Princeton UniversityR. Saldanha - Princeton UniversityW. Tan - University of Notre DameJ. Tatarowicz - Temple UniversityS. Walker - Temple UniversityH. Wang - University of California, Los AngelesA. W. Watson - Temple UniversityS. Westerdale - Princeton UniversityJ. Yoo - Fermi National Accelerator LaboratorySCENE Collaboration
- Publication Details
- Physical review. D, Particles, fields, gravitation, and cosmology, v 88(9), 92006
- Publisher
- Amer Physical Soc
- Number of pages
- 6
- Grant note
- 1211308 / Direct For Mathematical & Physical Scien; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) PHY-1314507; PHY-1242625; PHY-1211308 / U.S. NSF; National Science Foundation (NSF) Istituto Nazionale di Fisica Nucleare (Italy ASPERA 1st common call, Darwin project) 1004072 / Division Of Physics; National Science Foundation (NSF); NSF - Directorate for Mathematical & Physical Sciences (MPS) DE-AC02-07CH11359 / U.S. DOE; United States Department of Energy (DOE)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Physics
- Web of Science ID
- WOS:000327387600003
- Scopus ID
- 2-s2.0-84889639531
- Other Identifier
- 991021863207404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Astronomy & Astrophysics
- Physics, Particles & Fields