Status of Low T<sub>c</sub> 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.

*US Department of Energy, Office of Science, Nuclear Physics

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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