Diamond detector for dark matter direct detection

12 Jul 2021, 15:15
15m
Track K (Zoom)

Track K

Zoom

talk Dark Matter Dark Matter

Speaker

To Chin Yu (SLAC/Stanford)

Description

We present the theoretical case along with some early measurements with diamond test chips that demonstrate the viability of TES on diamond as a potential platform for direct detection of sub-GeV dark matter.
Diamond targets can be sensitive to both nuclear and electron recoils from dark matter scattering in the MeV and above mass range, as well as to absorption processes of dark matter with masses between sub-eV to 10's of eV.
Compared to other proposed semiconducting targets such as germanium and silicon, diamond detectors can probe lower dark matter masses via nuclear recoils due to the lightness of the carbon nucleus. The expected reach for electron recoils is comparable to that of germanium and silicon, with the advantage that dark counts are expected to be under better control. Via absorption processes, unconstrained QCD axion parameter space can be successfully probed in diamond for masses of order 10~eV.

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Primary authors

Blas Cabrera (Stanford University) Noah Kurinsky (Fermi National Accelerator Laboratory) Paul Brink (SLAC) Richard Partridge (SLAC National Accelerator Laboratory (US)) To Chin Yu (SLAC/Stanford) Yonit Hochberg (Hebrew University)

Presentation materials