Speaker
Description
The evidence of dark matter from astrophysics and cosmology is overwhelmingly robust, yet the evidence of dark matter from particle physics is continuously null. ALETHEIA aims to hunt for low-mass dark matter with liquid helium-filled TPCs. Thanks to such unique advantages as (a) ease to purify, (b) no radioactive isotopes, and (c) potentially strong ER/NR discrimination, liquid helium-filled TPCs would achieve especially low backgrounds. As a result, 1 ton*yr ALETHEIA data is supposed to reach the B-8 neutrino floor/fog cross-section, or 10^{-45} cm^2. In this talk, I will present the R&D progress we have made in the past five years or so, which demonstrate that a single-phase liquid helium TPC is technologically viable. Research on a dual-phase TPC is currently underway.
| Collaboration you are representing | On behalf of ALETHEIA collaboration |
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