May 24 – 28, 2021
America/Vancouver timezone

HeRALD: Dark Matter Direct Detection with Superfluid 4He

May 27, 2021, 10:06 AM
Parallel session talk Sensors: Emerging Technology Sensors: Emerging Technology


Harold Pinckney (University of Massachusetts at Amherst)


HeRALD, the Helium Roton Apparatus for Light Dark Matter, will use a superfluid 4He target to study the sub-GeV dark matter parameter space. The HeRALD design is sensitive to all signal channels produced by nuclear recoils in superfluid helium: singlet and triplet excimers, as well as phonon-like excitations of the superfluid medium. Excimers are detected via calorimetry in and around the superfluid helium. Phonon-like vibrational excitations eject helium atoms from the superfluid-vacuum surface which are detected by adsorption onto calorimetry above the surface. I will discuss the design, sensitivity projections, and ongoing R&D for the HeRALD experiment. In particular, I will present an initial light yield measurement of superfluid helium down to approximately 50 keV.

TIPP2020 abstract resubmission? No, this is an entirely new submission.

Primary author

Harold Pinckney (University of Massachusetts at Amherst)

Presentation materials