Speaker
Prof.
Scott Hertel
(University of Massachusetts - Amherst)
Description
We report recent progress toward using superfluid 4He for nuclear recoil direct detection, as part of the overall TESSERACT pre-Project R&D effort. in the US. The 4He "quantum evaporation" signal pathway allows both a low threshold and the possibility of rejecting the primary background (heat-only events in the calorimetry itself) through multi-channel coincidence. We have recently demonstrated the key technology of heat-free superfluid film-stopping, newly allowing measurements of 4He scintillation and evaporation signal yields at sub-keV energies.
| Submitted on behalf of a Collaboration? | Yes |
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