TY - JOUR
T1 - Skipper-CCD sensors for the Oscura experiment
T2 - Requirements and preliminary tests
AU - Cervantes-Vergara, Brenda A.
AU - Perez, Santiago
AU - Estrada, Juan
AU - Botti, Ana
AU - Chavez, Claudio R.
AU - Chierchie, Fernando
AU - Saffold, Nathan
AU - Aguilar-Arevalo, Alexis
AU - Alcalde-Bessia, Fabricio
AU - Avalos, Nicolás
AU - Baez, Oscar
AU - Baxter, Daniel
AU - Bertou, Xavier
AU - Bonifazi, Carla
AU - Cancelo, Gustavo
AU - Castelló-Mor, Nuria
AU - Chavarria, Alvaro E.
AU - De Egea, Juan Manuel
AU - D'Olivo, Juan Carlos
AU - Dreyer, Cyrus
AU - Drlica-Wagner, Alex
AU - Essig, Rouven
AU - Estrada, Ezequiel
AU - Etzion, Erez
AU - Grylls, Paul
AU - Fernandez-Moroni, Guillermo
AU - Fernández-Serra, Marivi
AU - Ferreyra, Santiago
AU - Holland, Stephen
AU - Lantero Barreda, Agustín
AU - Lathrop, Andrew
AU - Lawson, Ian
AU - Loer, Ben
AU - Luoma, Steffon
AU - Marrufo Villalpando, Edgar
AU - Martinez Montero, Mauricio
AU - McGuire, Kellie
AU - Molina, Jorge
AU - Munagavalasa, Sravan
AU - Norcini, Danielle
AU - Piers, Alexander
AU - Privitera, Paolo
AU - Rodrigues, Dario
AU - Saldanha, Richard
AU - Singal, Aman
AU - Smida, Radomir
AU - Sofo-Haro, Miguel
AU - Stalder, Diego
AU - Stefanazzi, Leandro
AU - Tiffenberg, Javier
AU - Traina, Michelangelo
AU - Uemura, Sho
AU - Ventura, Pedro
AU - Vilar Cortabitarte, Rocío
AU - Yajur, Rachana
N1 - Publisher Copyright: © 2023 The Author(s).
PY - 2023/8/1
Y1 - 2023/8/1
N2 - Oscura is a proposed multi-kg skipper-CCD experiment designed for a dark matter (DM) direct detection search that will reach unprecedented sensitivity to sub-GeV DM-electron interactions with its 10 kg detector array. Oscura is planning to operate at SNOLAB with 2070 m overburden, and aims to reach a background goal of less than one event in each electron bin in the 2-10 electron ionization-signal region for the full 30 kg-year exposure, with a radiation background rate of 0.01 dru.[1 dru (differential rate unit) corresponds to 1 event/kg/day/keV.] In order to achieve this goal, Oscura must address each potential source of background events, including instrumental backgrounds. In this work, we discuss the main instrumental background sources and the strategy to control them, establishing a set of constraints on the sensors' performance parameters. We present results from the tests of the first fabricated Oscura prototype sensors, evaluate their performance in the context of the established constraints and estimate the Oscura instrumental background based on these results.
AB - Oscura is a proposed multi-kg skipper-CCD experiment designed for a dark matter (DM) direct detection search that will reach unprecedented sensitivity to sub-GeV DM-electron interactions with its 10 kg detector array. Oscura is planning to operate at SNOLAB with 2070 m overburden, and aims to reach a background goal of less than one event in each electron bin in the 2-10 electron ionization-signal region for the full 30 kg-year exposure, with a radiation background rate of 0.01 dru.[1 dru (differential rate unit) corresponds to 1 event/kg/day/keV.] In order to achieve this goal, Oscura must address each potential source of background events, including instrumental backgrounds. In this work, we discuss the main instrumental background sources and the strategy to control them, establishing a set of constraints on the sensors' performance parameters. We present results from the tests of the first fabricated Oscura prototype sensors, evaluate their performance in the context of the established constraints and estimate the Oscura instrumental background based on these results.
KW - Dark Matter detectors (WIMPs, axions, etc.)
KW - Photon detectors for UV, visible and IR photons (solid-state) (PIN diodes, APDs, Si-PMTs, G-APDs, CCDs, EBCCDs, EMCCDs, CMOS imagers, etc)
KW - Solid state detectors
KW - Very low-energy charged particle detectors
UR - http://www.scopus.com/inward/record.url?scp=85171459748&partnerID=8YFLogxK
U2 - https://doi.org/10.1088/1748-0221/18/08/P08016
DO - https://doi.org/10.1088/1748-0221/18/08/P08016
M3 - مقالة
SN - 1748-0221
VL - 18
JO - Journal of Instrumentation
JF - Journal of Instrumentation
IS - 8
M1 - P08016
ER -