Events Calendar
The SPLENDOR experiment - Search for Particles of Light Dark Matter with Narrow-Gap Semiconductors
Tuesday September 19, 2023
| 2:00 pm
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Presenter: | Aparajita Mazumdar (LANL) |
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| Series: | Nuclear, Particle, Astroparticle and Cosmology (NUPAC) Seminars | |
| Abstract: |
The direct detection and study of dark matter, which constitutes 85% of the total mass in the Universe, remains one of the biggest open problems of modern physics. The present state of the art dark matter detectors for sub-GeV dark matter searches use standard semiconductors with band-gaps O(eV), such as Si or Ge, which are not sensitive to fermionic dark matter lighter than ~MeV and to bosonic dark matter lighter than ~eV.
SPLENDOR (Search for Particles of Light Dark Matter with Narrow-Gap Semiconductors) proposes to use novel narrow band-gap semiconductors as ionization detectors to search for light dark matter in this previously unexplored mass regime. These materials, having band-gaps < O(100 meV), can be developed into low threshold detectors sensitive to sub-eV energy deposits when operated at mK temperatures. Low-noise cryogenic amplifiers based on High Electron Mobility Transistors are used to read out the charge signals, with an ultimate instrumentation goal of single electron-hole pair detection with charge-sensitive quantum sensors. In this seminar, I will give an overview of SPLENDOR, and discuss our recent progress in the growth and characterization of the narrow band-gap semiconductors, and the development and testing of the low-noise charge readout. |
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| Web Site: | https:/ / unm.zoom.us/ j/ 94141126387 | |
| Host: | David Camarena | |
| Location: | PAIS-3205, PAIS | |
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