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We introduce the Broadband Reflector Experiment for Axion Detection (BREAD) conceptual design and science program. This haloscope plans to search for bosonic dark matter across the 10^-3, 1 eV (0. 24, 240 THz) mass range. BREAD proposes a cylindrical metal barrel to convert dark matter into photons, which a novel parabolic reflector design focuses onto a photosensor. This unique geometry enables enclosure in standard cryostats and high-field solenoids, overcoming limitations of current dish antennas. A pilot 0. 7 m^2 barrel experiment planned at Fermilab is projected to surpass existing dark photon coupling constraints by over a decade with one-day runtime. Axion sensitivity requires <10^-20 W/sqrtHz sensor noise equivalent power with a 10 T solenoid and 10 m^2 barrel. We project BREAD sensitivity for various sensor technologies and discuss future prospects.
Liu et al. (2022) studied this question.