CALDER: Cryogenic light detectors for background-free searches

Jan 3, 2018
Published in:
  • AIP Conf.Proc. 1921 (2018) 1, 060006
Contribution to:
  • Published: Jan 3, 2018

Citations per year

0 Citations
Abstract: (AIP)
CALDER is a R&D project for the development of cryogenic light detectors with an active surface of 5x5cm2 and an energy resolution of 20 eV RMS for visible and UV photons. These devices can enhance the sensitivity of next generation large mass bolometric detectors for rare event searches, providing an active background rejection method based on particle discrimination. A CALDER detector is composed by a large area Si absorber substrate with superconducting kinetic inductance detectors (KIDs) deposited on it. The substrate converts the incoming light into athermal phonons, that are then sensed by the KIDs. KID technology combine fabrication simplicity with natural attitude to frequency-domain multiplexing, making it an ideal candidate for a large scale bolometric experiments. We will give an overview of the CALDER project and show the performances obtained with prototype detectors both in terms of energy resolution and efficiency.
  • energy resolution
  • bolometer
  • superconductivity
  • sensitivity
  • cryogenics
  • photon: detector
  • detector: design
  • silicon
  • efficiency