Speaker
Description
Cryogenic detectors have demonstrated sub-keV sensitivity to both electron and nuclear recoils, enabling the exploration of dark matter candidates—such as sub-GeV particles and ALPs—that are otherwise hardly accessible to conventional solid-state detectors. Despite significant advancements in cryogenic technology and detector performance, scalability remains a primary challenge, largely due to readout limitations. Transition Edge Sensors (TESs) offer an unparalleled Signal-to-Noise ratio, making them the preferred choice for low-threshold detection. However, their readout relies on DC-SQUIDs, which provide extremely low noise at the cost of complex control electronics that limit the total channel count per installation. In this contribution, we discuss the implementation of microwave multiplexing for sizeable cryogenic calorimeters, addressing the technological challenges and the resulting impact on the sensitivity of high-granularity, TES-based experiments.
| Parallel session | New Physics Searches: Dark Matter and High-Frequency Gravitational Waves |
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