Mainz 2014 – scientific programme

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T: Fachverband Teilchenphysik

T 32: Dunkle Materie 2

T 32.5: Talk

Monday, March 24, 2014, 17:45–18:00, P11

Development of Neganov-Luke Amplified Cryogenic Light- Detectors for Current and Future Rare Event Searches. — •Michael Willers for the TUM E15 Kryodetektor collaboration — Technische Universität München, Physik Department E15, James Franck Straße, 85748 Garching

Ultra-low background experiments that employ the phonon-light technique for an active background suppression (e.g. the direct dark matter search experiment CRESST-II and the planned EURECA experiment or future experiments searching for the neutrino-less double beta de- cay) rely heavily on the sensitivity of the cryogenic light-detector at low energies.

Neganov-Luke (NL) amplified cryogenic light-detectors offer a promising way to increase the sensitivity by drifting photon induced electrons and holes in a semiconductor in an applied electric field and thus amplifying the phonon signal. In this talk, we will present recent results obtained with such NL amplified cryogenic light-detectors and possible future applications.

This research was supported by the DFG cluster of excellence “Origin and Structure of the Universe”, the “Helmholtz Alliance for Astroparticle Phyiscs” and the “Maier-Leibnitz-Laboratorium”(Garching).