A WIMP Dark Matter Detector Using MKIDs |
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Authors: | S Golwala J Gao D Moore B Mazin M Eckart B Bumble P Day H G LeDuc J Zmuidzinas |
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Affiliation: | (1) Division of Physics, Mathematics, and Astronomy, California Institute of Technology, Pasadena, CA 91125, USA;(2) Jet Propulsion Laboratory, Pasadena, CA 91109, USA |
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Abstract: | We are pursuing the development of a phonon- and ionization-mediated WIMP dark matter detector employing microwave kinetic
inductance detectors (MKIDs) in the phonon-sensing channel. Prospective advantages over existing detectors include: improved
reconstruction of the phonon signal and event position; simplified readout wiring and cold electronics; and simplified and
more reliable fabrication. We have modeled a simple design using available MKID sensitivity data and anticipate energy resolution
as good as existing phonon-mediated detectors and improved position reconstruction. We are doing preparatory experimental
work by fabricating strip absorber architectures. Measurements of diffusion length, trapping efficiency, and MKID sensitivity
with these devices will enable us to design a 1 cm2×2 mm prototype device to demonstrate phonon energy resolution and position reconstruction.
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Keywords: | WIMP detectors Dark matter detectors Microwave kinetic inductance detectors Phonon-mediated detectors Strip detectors Position-sensitive detectors Nuclear-recoil discrimination |
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