Orateur
Description
The TESSERACT experiment will search for sub-GeV dark matter using multiple complementary, ultra-sensitive cryogenic calorimeters, sensitive to nuclear-, electron-, and dark photon–type interactions. Three detector technologies will be operated: superfluid helium, polar crystals (GaAs and sapphire), and semiconductor crystals (germanium and silicon). These detectors will employ Transition Edge Sensors for phonon readout, and they can be hosted in the same dilution refrigerator. In addition to maximizing sensitivity, this multi-target approach enables the identification and discrimination of instrumental and physical backgrounds.
The experiment is currently in a phase of targeted R&D, with the first physics results from demonstrator setups expected this year. Following a short commissioning phase at LPSC, the full integration of the TESSERACT setup at the Modane Underground Laboratory is planned for 2028.