Professor Jocelyn Monroe: Publications

Search for hep solar neutrinos and the diffuse supernova neutrino background using all three phases of the Sudbury Neutrino Observatory

Physical Review D American Physical Society (APS) 102:6 (2020) 062006

Authors:

B Aharmim, SN Ahmed, AE Anthony, N Barros, EW Beier, A Bellerive, B Beltran, M Bergevin, SD Biller, E Blucher, R Bonventre, K Boudjemline, MG Boulay, B Cai, EJ Callaghan, J Caravaca, YD Chan, D Chauhan, M Chen, BT Cleveland, GA Cox, X Dai, H Deng, FB Descamps, JA Detwiler, PJ Doe, G Doucas, P-L Drouin, M Dunford, SR Elliott, HC Evans, GT Ewan, J Farine, H Fergani, F Fleurot, RJ Ford, JA Formaggio, N Gagnon, K Gilje, J TM Goon, K Graham, E Guillian, S Habib, RL Hahn, AL Hallin, ED Hallman, PJ Harvey, R Hazama, WJ Heintzelman, J Heise, RL Helmer, A Hime, C Howard, M Huang, P Jagam, B Jamieson, NA Jelley, M Jerkins, KJ Keeter, JR Klein, LL Kormos, M Kos, C Kraus, CB Krauss, A Krüger, T Kutter, CCM Kyba, K Labe, BJ Land, R Lange, A LaTorre, J Law, IT Lawson, KT Lesko, JR Leslie, I Levine, JC Loach, R MacLellan, S Majerus, HB Mak, J Maneira, RD Martin, A Mastbaum, N McCauley, AB McDonald, SR McGee, ML Miller, B Monreal, J Monroe, BG Nickel, AJ Noble, HM O’Keeffe, NS Oblath, CE Okada, RW Ollerhead, GD Orebi Gann, SM Oser, RA Ott, SJM Peeters, AWP Poon, G Prior, SD Reitzner, K Rielage, BC Robertson, RGH Robertson, MH Schwendener, JA Secrest, SR Seibert, O Simard, D Sinclair, P Skensved, TJ Sonley, LC Stonehill, G Tešić, N Tolich, T Tsui, R Van Berg, BA VanDevender, CJ Virtue, BL Wall, D Waller, H Wan Chan Tseung, DL Wark, J Wendland, N West, JF Wilkerson, JR Wilson, T Winchester, A Wright, M Yeh, F Zhang, K Zuber

Off-Axis Characterisation of the CERN T10 Beam for low Momentum Proton Measurements with a High Pressure Gas Time Projection Chamber

(2020)

Authors:

SB Jones, TS Nonnenmacher, E Atkin, GJ Barker, A Basharina-Freshville, C Betancourt, SB Boyd, D Brailsford, Z Chen-Wishart, L Cremonesi, A Deisting, A Dias, P Dunne, J Haigh, P Hamacher-Baumann, A Kaboth, A Korzenev, W Ma, P Mermod, M Mironova, J Monroe, R Nichol, J Nowak, W Parker, H Ritchie-Yates, S Roth, R Saakyan, N Serra, Y Shitov, J Steinmann, A Tarrant, MA Uchida, S Valder, AV Waldron, M Ward, MO Wascko

Off-Axis Characterisation of the CERN T10 Beam for low Momentum Proton Measurements with a High Pressure Gas Time Projection Chamber

Instruments MDPI 4:3 (2020) 21

Authors:

The liquid-argon scintillation pulseshape in DEAP-3600

The European Physical Journal C SpringerOpen 80:4 (2020) 303

Authors:

P Adhikari, R Ajaj, GR Araujo, M Batygov, B Beltran, CE Bina, MG Boulay, B Broerman, JF Bueno, A Butcher, B Cai, M Cárdenas-Montes, S Cavuoti, Y Chen, BT Cleveland, JM Corning, SJ Daugherty, P Di Stefano, K Dering, L Doria, FA Duncan, M Dunford, A Erlandson, N Fatemighomi, G Fiorillo, A Flower, RJ Ford, R Gagnon, D Gallacher, EA Garcés, P García Abia, S Garg, P Giampa, D Goeldi, VV Golovko, P Gorel, K Graham, DR Grant, A Grobov, AL Hallin, M Hamstra, PJ Harvey, C Hearns, A Ilyasov, A Joy, CJ Jillings, O Kamaev, G Kaur, A Kemp, I Kochanek

Abstract:

DEAP-3600 is a liquid-argon scintillation detector looking for dark matter. Scintillation events in the liquid argon (LAr) are registered by 255 photomultiplier tubes (PMTs), and pulseshape discrimination (PSD) is used to suppress electromagnetic background events. The excellent PSD performance of LAr makes it a viable target for dark matter searches, and the LAr scintillation pulseshape discussed here is the basis of PSD. The observed pulseshape is a combination of LAr scintillation physics with detector effects. We present a model for the pulseshape of electromagnetic background events in the energy region of interest for dark matter searches. The model is composed of (a) LAr scintillation physics, including the so-called intermediate component, (b) the time response of the TPB wavelength shifter, including delayed TPB emission at O(ms) time-scales, and c) PMT response. TPB is the wavelength shifter of choice in most LAr detectors. We find that approximately 10% of the intensity of the wavelength-shifted light is in a long-lived state of TPB. This causes light from an event to spill into subsequent events to an extent not usually accounted for in the design and data analysis of LAr-based detectors

Cosmogenic neutron production at the Sudbury Neutrino Observatory

PHYSICAL REVIEW D 100:11 (2019) ARTN 112005

Authors:

B Aharmim, Sn Ahmed, Ae Anthony, N Barros, Ew Beier, A Bellerive, B Beltran, M Bergevin, Sd Biller, R Bonventre, K Boudjemline, Mg Boulay, B Cai, Ej Callaghan, J Caravaca, Yd Chan, D Chauhan, M Chen, Bt Cleveland, Ga Cox, R Curley, X Dai, H Deng, Fb Descamps, Ja Detwiler, Pj Doe, G Doucas, P-L Drouin, M Dunford, Sr Elliott, Hc Evans, Gt Ewan, J Farine, H Fergani, F Fleurot, Rj Ford, Ja Formaggio, N Gagnon, K Gilje, Jtm Goon, K Graham, E Guillian, S Habib, Rl Hahn, Al Hallin, Ed Hallman, Pj Harvey, R Hazama, Wj Heintzelman, J Heise

Abstract:

© 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Neutrons produced in nuclear interactions initiated by cosmic-ray muons present an irreducible background to many rare-event searches, even in detectors located deep underground. Models for the production of these neutrons have been tested against previous experimental data, but the extrapolation to deeper sites is not well understood. Here we report results from an analysis of cosmogenically produced neutrons at the Sudbury Neutrino Observatory. A specific set of observables are presented, which can be used to benchmark the validity of geant4 physics models. In addition, the cosmogenic neutron yield, in units of 10-4 cm2/(g·μ), is measured to be 7.28±0.09(stat)-1.12+1.59(syst) in pure heavy water and 7.30±0.07(stat)-1.02+1.40(syst) in NaCl-loaded heavy water. These results provide unique insights into this potential background source for experiments at SNOLAB.

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