Abstract
The CRESST experiment aims at the direct detection of sub-GeV dark matter particles via elastic scattering off nuclei in different target crystals at cryogenic temperatures. The advancement in W-TES sensors allowed the CRESST detectors to reach energy thresholds of 10 eV and lower, opening the way to the exploration of dark matter masses as low as \sim 70\,MeV/c^{2}. This work presents optimisation studies of W-TESs aimed at further improving the signal-to-noise ratio and overall detector performance. In particular, we investigate the thickness, dimensions, and material composition of phonon collectors and assess their impact on detector response. The results demonstrate a significant performance enhancement and establish new benchmarks for the sensors used within CRESST.
| Original language | English |
|---|---|
| Article number | 2102607 |
| Journal | IEEE Transactions on Applied Superconductivity |
| Volume | 36 |
| Issue number | 6 |
| DOIs | |
| State | Published - 2026 |
Keywords
- Superconducting devices
- aluminium pads
- dark matter
- phonons
- rare-event searches
- superconducting thin films
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