Jul 22 – 26, 2019
Europe/Rome timezone

Dynamic characterization of cryogenic optical photon detectors with Ir/Pt bilayer transition edge sensors

Jul 23, 2019, 5:45 PM
1h 15m
Piazza Città di Lombardia (Milano)

Piazza Città di Lombardia


Piazza Città di Lombardia, 1, 20124 Milano MI
Poster Detector readout, signal processing, and related technologies Poster session


Vivek Singh (University of California, Berkeley)


Low-temperature calorimeters (or phonon detectors) have proven to be great detectors to search for rare processes like neutrinoless double beta decay and dark matter interactions. While the massive calorimeters used in the aforementioned searches can achieve excellent energy resolution, their sensitivity is limited by the background radioactivity. One technique to enable event-by-event background rejection by reading out the phonon and photon signals simultaneously from a scintillating crystal or a Cherenkov light-emitting crystal. We have an ongoing R&D effort towards developing sensitive optical-photon detectors that can measure tiny amounts of scintillation/Cherenkov light from low-temperature calorimeters. The detectors use a novel Iridium/Platinum bilayer superconducting transition-edge-sensor (TES) that can be operated at temperatures ~ 30 mK. In this work we will show the characterization of optical photon detectors in terms of energy and timing resolution, together with a thermal model describing the steady state current-voltage characteristics and the dynamic response of the detector.

Student (Ph.D., M.Sc. or B.Sc.) N
Less than 5 years of experience since completion of Ph.D Y

Primary authors

Dr Alexey Drobizhev (University of California, Berkeley) Dr Benjamin Schmidt (Lawrence Berkeley National Laboratory) Dr Bradford Welliver (Lawrence Berkeley National Laboratory) Brian Fujikawa (Lawrence Berkeley National Laboratory) Mr Charles Li (University of California, Berkeley) Clarence Chang (Argonne National Lab) Dr G Karapetrov (Drexel University) Gensheng Wang (ANL) Giovanni Benato (University of California Berkeley) Dr J.L. Ouellet (Massachusetts Institute of Technology) Jianjie Zhang (ANL) Mr John Pearson (Materials Science Division, Argonne National Laboratory) Kawtar Hafidi Hafidi (Argonne National Laboratory) Dr Laura Marini (University of California, Berkeley) Dr Raul Hennings-Yeomans (University of California, berkeley) Mr Roger Huang (University of California, Berkeley) Mr S Wagaarachchi (University of California, Berkeley) Prof. Thomas O'Donnell (Department of Physics, Virginia Tech) Mr Tom Polakovic (Drexel University) Dr Valentine Novosad (Materials Science Division,Physics Division, Argonne National Laboratory) Vivek Singh (University of California, Berkeley) Volodymyr Yefremenko Whitney Armstrong (Argonne National Laboratory) Yury Kolomensky (LBNL/UC Berkeley) Z.E. Meziani (Argonne National Laboratory)

Presentation materials