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Skipper-CCD Sensors for the Oscura Experiment: Requirements and Preliminary Tests

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arxiv 2304.04401 v2 pith:FZM7H5WP submitted 2023-04-10 physics.ins-det

Brenda A. Cervantes-Vergara , Santiago Perez , Juan Estrada , Ana Botti , Claudio R. Chavez , Fernando Chierchie , Nathan Saffold , Alexis Aguilar-Arevalo
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Fabricio Alcalde-Bessia Nicolás Avalos Oscar Baez Daniel Baxter Xavier Bertou Carla Bonifazi Gustavo Cancelo Nuria Castelló-Mor Alvaro E. Chavarria Juan Manuel De Egea Juan Carlos D'Olivo Cyrus Dreyer Alex Drlica-Wagner Rouven Essig Ezequiel Estrada Erez Etzion Paul Grylls Guillermo Fernandez-Moroni Marivi Fernández-Serra Santiago Ferreyra Stephen Holland Agustín Lantero Barreda Andrew Lathrop Ian Lawson Ben Loer Steffon Luoma Edgar Marrufo Villalpando Mauricio Martinez Montero Kellie McGuire Jorge Molina Sravan Munagavalasa Danielle Norcini Alexander Piers Paolo Privitera Dario Rodrigues Richard Saldanha Aman Singal Radomir Smida Miguel Sofo-Haro Diego Stalder Leandro Stefanazzi Javier Tiffenberg Michelangelo Traina Sho Uemura Pedro Ventura Rocío Vilar Cortabitarte Rachana Yajur
This is my paper · ORCID
classification physics.ins-det
keywords oscurabackgroundinstrumentalsensorsconstraintselectronexperimentgoal
verification ladder T0 review T1 audit T2 compute T3 formal
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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.

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Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Freeze-in Production of Non-Abelian Millicharged Vector Dark Matter

    hep-ph 2025-12 conditional novelty 6.0 of 10

    A hidden SU(2) gauge sector broken to a massless dark photon can produce vector dark matter via freeze-in with portal couplings near 10^-7.

  2. DarkNESS: A skipper-CCD NanoSatellite for Dark Matter Searches

    astro-ph.IM 2025-05 conditional novelty 6.0 of 10

    A mission design paper describing how a skipper-CCD CubeSat in low Earth orbit could search for strongly interacting sub-GeV dark matter and decaying dark matter X-rays.

  3. First Production of Skipper-CCD Modules for the DAMIC-M Experiment

    physics.ins-det 2025-09 accept novelty 5.0 of 10

    DAMIC-M completed production of 28 skipper-CCD modules, selected from 188 tested CCDs, with measured performance and added radioactivity within the experiment's background budget.

  4. Community Report from the 2025 SNOLAB Future Projects Workshop

    hep-ex 2025-07 unverdicted novelty 1.0 of 10

    A community report summarizes proposed future experiments and infrastructure needs for SNOLAB over the next 15 years.

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