Skipper-CCD Sensors for the Oscura Experiment: Requirements and Preliminary Tests
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arXiv
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| Natura: | Preprint |
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2023
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| author | Cervantes-Vergara, Brenda A. Perez, Santiago Estrada, Juan Botti, Ana Chavez, Claudio R. Chierchie, Fernando Saffold, Nathan Aguilar-Arevalo, Alexis Alcalde-Bessia, Fabricio Avalos, Nicolás Baez, Oscar Baxter, Daniel Bertou, Xavier Bonifazi, Carla Cancelo, Gustavo Castelló-Mor, Nuria Chavarria, Alvaro E. De Egea, Juan Manuel D'Olivo, Juan Carlos Dreyer, Cyrus Drlica-Wagner, Alex Essig, Rouven Estrada, Ezequiel Etzion, Erez Grylls, Paul Fernandez-Moroni, Guillermo Fernández-Serra, Marivi Ferreyra, Santiago Holland, Stephen Barreda, Agustín Lantero Lathrop, Andrew Lawson, Ian Loer, Ben Luoma, Steffon Villalpando, Edgar Marrufo Montero, Mauricio Martinez McGuire, Kellie Molina, Jorge Munagavalasa, Sravan Norcini, Danielle Piers, Alexander Privitera, Paolo Rodrigues, Dario Saldanha, Richard Singal, Aman Smida, Radomir Sofo-Haro, Miguel Stalder, Diego Stefanazzi, Leandro Tiffenberg, Javier Traina, Michelangelo Uemura, Sho Ventura, Pedro Cortabitarte, Rocío Vilar Yajur, Rachana |
| author_facet | Cervantes-Vergara, Brenda A. Perez, Santiago Estrada, Juan Botti, Ana Chavez, Claudio R. Chierchie, Fernando Saffold, Nathan Aguilar-Arevalo, Alexis Alcalde-Bessia, Fabricio Avalos, Nicolás Baez, Oscar Baxter, Daniel Bertou, Xavier Bonifazi, Carla Cancelo, Gustavo Castelló-Mor, Nuria Chavarria, Alvaro E. De Egea, Juan Manuel D'Olivo, Juan Carlos Dreyer, Cyrus Drlica-Wagner, Alex Essig, Rouven Estrada, Ezequiel Etzion, Erez Grylls, Paul Fernandez-Moroni, Guillermo Fernández-Serra, Marivi Ferreyra, Santiago Holland, Stephen Barreda, Agustín Lantero Lathrop, Andrew Lawson, Ian Loer, Ben Luoma, Steffon Villalpando, Edgar Marrufo Montero, Mauricio Martinez McGuire, Kellie Molina, Jorge Munagavalasa, Sravan Norcini, Danielle Piers, Alexander Privitera, Paolo Rodrigues, Dario Saldanha, Richard Singal, Aman Smida, Radomir Sofo-Haro, Miguel Stalder, Diego Stefanazzi, Leandro Tiffenberg, Javier Traina, Michelangelo Uemura, Sho Ventura, Pedro Cortabitarte, Rocío Vilar Yajur, Rachana |
| contents | 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. 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_04401 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Skipper-CCD Sensors for the Oscura Experiment: Requirements and Preliminary Tests Cervantes-Vergara, Brenda A. Perez, Santiago Estrada, Juan Botti, Ana Chavez, Claudio R. Chierchie, Fernando Saffold, Nathan Aguilar-Arevalo, Alexis Alcalde-Bessia, Fabricio Avalos, Nicolás Baez, Oscar Baxter, Daniel Bertou, Xavier Bonifazi, Carla Cancelo, Gustavo Castelló-Mor, Nuria Chavarria, Alvaro E. De Egea, Juan Manuel D'Olivo, Juan Carlos Dreyer, Cyrus Drlica-Wagner, Alex Essig, Rouven Estrada, Ezequiel Etzion, Erez Grylls, Paul Fernandez-Moroni, Guillermo Fernández-Serra, Marivi Ferreyra, Santiago Holland, Stephen Barreda, Agustín Lantero Lathrop, Andrew Lawson, Ian Loer, Ben Luoma, Steffon Villalpando, Edgar Marrufo Montero, Mauricio Martinez McGuire, Kellie Molina, Jorge Munagavalasa, Sravan Norcini, Danielle Piers, Alexander Privitera, Paolo Rodrigues, Dario Saldanha, Richard Singal, Aman Smida, Radomir Sofo-Haro, Miguel Stalder, Diego Stefanazzi, Leandro Tiffenberg, Javier Traina, Michelangelo Uemura, Sho Ventura, Pedro Cortabitarte, Rocío Vilar Yajur, Rachana Instrumentation and Detectors 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. 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. |
| title | Skipper-CCD Sensors for the Oscura Experiment: Requirements and Preliminary Tests |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2304.04401 |