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Scintillating Bubble Chambers for Rare Event Searches
oleh: Ernesto Alfonso-Pita, Edward Behnke, Matthew Bressler, Benjamin Broerman, Kenneth Clark, Jonathan Corbett, C. Eric Dahl, Koby Dering, Austin de St. Croix, Daniel Durnford, Pietro Giampa, Jeter Hall, Orin Harris, Hector Hawley-Herrera, Christopher M. Jackson, Youngtak Ko, Noah Lamb, Mathieu Laurin, Ilan Levine, W. Hugh Lippincott, Xingxin Liu, Russell Neilson, Marie-Cécile Piro, Shashank Priya, Daniel Pyda, Zhiheng Sheng, Gary Sweeney, Eric Vázquez-Jáuregui, Shawn Westerdale, Thomas J. Whitis, Alexander Wright, Wei Zha, Ryan Zhang
Format: | Article |
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Diterbitkan: | MDPI AG 2023-07-01 |
Deskripsi
The Scintillating Bubble Chamber (SBC) collaboration is developing liquid-noble bubble chambers for the detection of sub-keV nuclear recoils. These detectors benefit from the electron recoil rejection inherent in moderately-superheated bubble chambers with the addition of energy reconstruction provided from the scintillation signal. The ability to measure low-energy nuclear recoils allows the search for GeV-scale dark matter and the measurement of coherent elastic neutrino-nucleus scattering on argon from MeV-scale reactor antineutrinos. The first physics-scale detector, SBC-LAr10, is in the commissioning phase at Fermilab, where extensive engineering and calibration studies will be performed. In parallel, a functionally identical low-background version, SBC-SNOLAB, is being built for a dark matter search underground at SNOLAB. SBC-SNOLAB, with a 10 kg-yr exposure, will have sensitivity to a dark matter–nucleon cross section of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>2</mn><mo>×</mo><msup><mn>10</mn><mrow><mo>−</mo><mn>42</mn></mrow></msup></mrow></semantics></math></inline-formula> cm<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mrow></mrow><mn>2</mn></msup></semantics></math></inline-formula> at 1 GeV/<inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><msup><mi>c</mi><mn>2</mn></msup></semantics></math></inline-formula> dark matter mass, and future detectors could reach the boundary of the argon neutrino fog with a tonne-yr exposure. In addition, the deployment of an SBC detector at a nuclear reactor could enable neutrino physics investigations including measurements of the weak mixing angle and searches for sterile neutrinos, the neutrino magnetic moment, and the light Z’ gauge boson.