Status of the CALDER project: Cryogenic light detectors for background suppression
- Casali, N.
- Bellini, F.
- Calvo, M.
- Cardani, L.
- Castellano, M.G.
- Cosmelli, C.
- Cruciani, A.
- Di Domizio, S.
- Fresch, P.
- Goupy, J.
- Martinez, M.
- Monfardini, A.
- Pettinari, G.
- Le Sueur, H.
- Vignati, M.
DOIAbstract
International audienceThe development of large area cryogenic light detectors is one of the priorities of next generation bolometric experiments searching for neutrinoless double beta decay. The simultaneous read-out of the heat and light signals enables particle identification, provided that the energy resolution and the light collection are sufficiently high. CALDER (Cryogenic wide-Area Light Detectors with Excellent Resolution) is developing phonon-mediated silicon light detectors using KIDs, with the goal of sensing an area of 5 × 5 cm 2 with a resolution of 20 eV RMS. We present the latest results obtained with aluminum chips and with newly developed multi-layer titanium–aluminum chips featuring a remarkable sensitivity
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