Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data

M. Horn, V. A. Belov, D. Yu Akimov, H. M. Araújo, E. J. Barnes, A. A. Burenkov, V. Chepel, A. Currie, B. Edwards, C. Ghag, A. Hollingsworth, G. E. Kalmus, A. S. Kobyakin, A. G. Kovalenko, V. N. Lebedenko, A. Lindote, M. I. Lopes, R. Lüscher, P. Majewski, A. St J. Murphy & 16 others F. Neves, S. M. Paling, J. Pinto da Cunha, R. Preece, J. J. Quenby, L. Reichhart, P. R. Scovell, C. Silva, V. N. Solovov, N. J.T. Smith, P. F. Smith, V. N. Stekhanov, T. J. Sumner, C. Thorne, Luiz de Viveiros, R. J. Walker

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Abstract

Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The nuclear recoil data from several exposures to two sources were compared to detailed simulations. Energy-dependent scintillation and ionisation yields giving acceptable fits to the data were derived. Efficiency and resolution effects are treated using a light collection Monte Carlo, measured photomultiplier response profiles and hardware trigger studies. A gradual fall in scintillation yield below ~40 keVnr is found, together with a rising ionisation yield; both are in agreement with the latest independent measurements. The analysis method is applied to the most recent ZEPLIN-III data, acquired with a significantly upgraded detector and a precision-calibrated Am-Be source, as well as to the earlier data from the first run in 2008. A new method for deriving the recoil scintillation yield, which includes sub-threshold S1 events, is also presented which confirms the main analysis.

Original languageEnglish (US)
Pages (from-to)471-476
Number of pages6
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume705
Issue number5
DOIs
StatePublished - Nov 24 2011

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xenon
scintillation
ionization
liquids
neutron sources
hardware
actuators
broadband
thresholds
energy
detectors
profiles
simulation

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Cite this

Horn, M. ; Belov, V. A. ; Akimov, D. Yu ; Araújo, H. M. ; Barnes, E. J. ; Burenkov, A. A. ; Chepel, V. ; Currie, A. ; Edwards, B. ; Ghag, C. ; Hollingsworth, A. ; Kalmus, G. E. ; Kobyakin, A. S. ; Kovalenko, A. G. ; Lebedenko, V. N. ; Lindote, A. ; Lopes, M. I. ; Lüscher, R. ; Majewski, P. ; Murphy, A. St J. ; Neves, F. ; Paling, S. M. ; Pinto da Cunha, J. ; Preece, R. ; Quenby, J. J. ; Reichhart, L. ; Scovell, P. R. ; Silva, C. ; Solovov, V. N. ; Smith, N. J.T. ; Smith, P. F. ; Stekhanov, V. N. ; Sumner, T. J. ; Thorne, C. ; de Viveiros, Luiz ; Walker, R. J. / Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data. In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics. 2011 ; Vol. 705, No. 5. pp. 471-476.
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abstract = "Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The nuclear recoil data from several exposures to two sources were compared to detailed simulations. Energy-dependent scintillation and ionisation yields giving acceptable fits to the data were derived. Efficiency and resolution effects are treated using a light collection Monte Carlo, measured photomultiplier response profiles and hardware trigger studies. A gradual fall in scintillation yield below ~40 keVnr is found, together with a rising ionisation yield; both are in agreement with the latest independent measurements. The analysis method is applied to the most recent ZEPLIN-III data, acquired with a significantly upgraded detector and a precision-calibrated Am-Be source, as well as to the earlier data from the first run in 2008. A new method for deriving the recoil scintillation yield, which includes sub-threshold S1 events, is also presented which confirms the main analysis.",
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Horn, M, Belov, VA, Akimov, DY, Araújo, HM, Barnes, EJ, Burenkov, AA, Chepel, V, Currie, A, Edwards, B, Ghag, C, Hollingsworth, A, Kalmus, GE, Kobyakin, AS, Kovalenko, AG, Lebedenko, VN, Lindote, A, Lopes, MI, Lüscher, R, Majewski, P, Murphy, ASJ, Neves, F, Paling, SM, Pinto da Cunha, J, Preece, R, Quenby, JJ, Reichhart, L, Scovell, PR, Silva, C, Solovov, VN, Smith, NJT, Smith, PF, Stekhanov, VN, Sumner, TJ, Thorne, C, de Viveiros, L & Walker, RJ 2011, 'Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 705, no. 5, pp. 471-476. https://doi.org/10.1016/j.physletb.2011.10.038

Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data. / Horn, M.; Belov, V. A.; Akimov, D. Yu; Araújo, H. M.; Barnes, E. J.; Burenkov, A. A.; Chepel, V.; Currie, A.; Edwards, B.; Ghag, C.; Hollingsworth, A.; Kalmus, G. E.; Kobyakin, A. S.; Kovalenko, A. G.; Lebedenko, V. N.; Lindote, A.; Lopes, M. I.; Lüscher, R.; Majewski, P.; Murphy, A. St J.; Neves, F.; Paling, S. M.; Pinto da Cunha, J.; Preece, R.; Quenby, J. J.; Reichhart, L.; Scovell, P. R.; Silva, C.; Solovov, V. N.; Smith, N. J.T.; Smith, P. F.; Stekhanov, V. N.; Sumner, T. J.; Thorne, C.; de Viveiros, Luiz; Walker, R. J.

In: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, Vol. 705, No. 5, 24.11.2011, p. 471-476.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data

AU - Horn, M.

AU - Belov, V. A.

AU - Akimov, D. Yu

AU - Araújo, H. M.

AU - Barnes, E. J.

AU - Burenkov, A. A.

AU - Chepel, V.

AU - Currie, A.

AU - Edwards, B.

AU - Ghag, C.

AU - Hollingsworth, A.

AU - Kalmus, G. E.

AU - Kobyakin, A. S.

AU - Kovalenko, A. G.

AU - Lebedenko, V. N.

AU - Lindote, A.

AU - Lopes, M. I.

AU - Lüscher, R.

AU - Majewski, P.

AU - Murphy, A. St J.

AU - Neves, F.

AU - Paling, S. M.

AU - Pinto da Cunha, J.

AU - Preece, R.

AU - Quenby, J. J.

AU - Reichhart, L.

AU - Scovell, P. R.

AU - Silva, C.

AU - Solovov, V. N.

AU - Smith, N. J.T.

AU - Smith, P. F.

AU - Stekhanov, V. N.

AU - Sumner, T. J.

AU - Thorne, C.

AU - de Viveiros, Luiz

AU - Walker, R. J.

PY - 2011/11/24

Y1 - 2011/11/24

N2 - Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The nuclear recoil data from several exposures to two sources were compared to detailed simulations. Energy-dependent scintillation and ionisation yields giving acceptable fits to the data were derived. Efficiency and resolution effects are treated using a light collection Monte Carlo, measured photomultiplier response profiles and hardware trigger studies. A gradual fall in scintillation yield below ~40 keVnr is found, together with a rising ionisation yield; both are in agreement with the latest independent measurements. The analysis method is applied to the most recent ZEPLIN-III data, acquired with a significantly upgraded detector and a precision-calibrated Am-Be source, as well as to the earlier data from the first run in 2008. A new method for deriving the recoil scintillation yield, which includes sub-threshold S1 events, is also presented which confirms the main analysis.

AB - Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The nuclear recoil data from several exposures to two sources were compared to detailed simulations. Energy-dependent scintillation and ionisation yields giving acceptable fits to the data were derived. Efficiency and resolution effects are treated using a light collection Monte Carlo, measured photomultiplier response profiles and hardware trigger studies. A gradual fall in scintillation yield below ~40 keVnr is found, together with a rising ionisation yield; both are in agreement with the latest independent measurements. The analysis method is applied to the most recent ZEPLIN-III data, acquired with a significantly upgraded detector and a precision-calibrated Am-Be source, as well as to the earlier data from the first run in 2008. A new method for deriving the recoil scintillation yield, which includes sub-threshold S1 events, is also presented which confirms the main analysis.

UR - http://www.scopus.com/inward/record.url?scp=80955166114&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=80955166114&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2011.10.038

DO - 10.1016/j.physletb.2011.10.038

M3 - Article

VL - 705

SP - 471

EP - 476

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 5

ER -