Status of Low Tc IrPt TES Light Detectors for CUPID

ORAL

Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is currently searching for lepton number violating physics at the Laboratori Nazionali del Gran Sasso (LNGS). CUORE consists of 988 TeO2 crystals (742 kg) operated as cryogenic bolometers using neutron-transmutation doped (NTD) Ge thermistors. CUORE is expected to achieve a sensitivity of T1/2 = 9x1025 years (90 % C.L.) to the 130Te 0νββ decay half-life after 5 years of operation, and has already approached the expected background goal of ~0.01 counts/(keV·kg·yr). The CUORE Upgrade with Particle ID (CUPID) experiment will improve upon the CUORE background by having stricter radio-purity requirements, improved screening, enhanced target masses, and will have event by event discrimination of α and β interactions in the crystal via the collection of both light and heat. In order to meet the timing and energy resolution requirements of CUPID, light detectors using low-Tc transition edge sensors (TES) are a promising technology to use. This talk will present the current status of R&D between UCB, LBNL, and ANL in developing an IrPt bi-layer TES for use as a light detector and discuss how these devices can be realized for use in CUPID.

–

Presenters

  • Bradford C Welliver

    Nuclear Science Division, Lawrence Berkeley National Laboratory

Authors

  • Bradford C Welliver

    Nuclear Science Division, Lawrence Berkeley National Laboratory

  • Giovanni Benato

    University of California, Berkeley, Nuclear Science Division, Lawrence Berkeley National Laboratory

  • Clarence L Chang

    High Energy Physics Division, Argonne National Laboratory, Kavli Institute for Cosmological Physics, University of Chicago

  • Alexey Drobizhev

    Nuclear Science Division, Lawrence Berkeley National Laboratory

  • Brian K Fujikawa

    Nuclear Science Division, Lawrence Berkeley National Laboratory

  • Raul Hennings-Yeomans

    University of California, Berkeley

  • Goran Tripun Karapetrov

    Drexel University

  • Yury G Kolomensky

    University of California, Berkeley, Nuclear Science Division, Lawrence Berkeley National Laboratory

  • Laura Marini

    University of California, Berkeley

  • Valentyn Novosad

    Physics Division, Argonne National Laboratory, Materials Science Division, Argonne National Laboratory

  • John Pearson

    Materials Science Division, Argonne National Laboratory

  • Tomas Polakovic

    Drexel University, Physics Division, Argonne National Laboratory

  • Benjamin EL Schmidt

    Nuclear Science Division, Lawrence Berkeley National Laboratory

  • Vivek Singh

    University of California, Berkeley

  • Sachinthya Wagaarachchi

    University of California, Berkeley

  • Gensheng Wang

    High Energy Physics Division, Argonne National Laboratory

  • Volodymyr G Yefremenko

    High Energy Physics Division, Argonne National Laboratory

  • Jianjie Zhang

    High Energy Physics Division, Argonne National Laboratory