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Add to Calendar 11/18/2019 1:00 pm 11/18/2019 America/Chicago Medium and High Energy Physics Seminar: Scott Hertel (University of Massachusetts) "Superfluid 4He as a tool for sub-eV particle physics" DESCRIPTION:

I will describe a novel sensor technology, in which meV-scale excitations of superfluid 4He are read out using 'quantum evaporation' of 4He atoms into the vacuum above.  We are motivated by the possibility that dark matter may be hiding at low (keV-MeV) mass scales, lighter than the standard WIMP hypothesis.  At these lower masses, the recoil endpoint energy will be in the meV-eV range, and the single dominating technological challenge becomes sensor threshold.  Superfluid 4He offers unique pathways for pushing threshold into this sub-eV regime, and testing otherwise untestable dark matter models.

\n\nSPEAKER: Scott Hertel (University of Massachusetts)
464 Loomis false

Medium and High Energy Physics Seminar: Scott Hertel (University of Massachusetts) "Superfluid 4He as a tool for sub-eV particle physics"

Speaker Scott Hertel (University of Massachusetts)
Date: 11/18/2019
Time: 1 p.m.
Location: 464 Loomis
Event Contact: Brandy Shier
bshier@illinois.edu
Sponsor: Physics
Event Type: Seminar/Symposium
 

I will describe a novel sensor technology, in which meV-scale excitations of superfluid 4He are read out using 'quantum evaporation' of 4He atoms into the vacuum above.  We are motivated by the possibility that dark matter may be hiding at low (keV-MeV) mass scales, lighter than the standard WIMP hypothesis.  At these lower masses, the recoil endpoint energy will be in the meV-eV range, and the single dominating technological challenge becomes sensor threshold.  Superfluid 4He offers unique pathways for pushing threshold into this sub-eV regime, and testing otherwise untestable dark matter models.

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