Performance of a silicon photomultiplier module for the ACME III electron EDM search

POSTER

Abstract

A measurement of the electron electric dipole moment (eEDM) is a powerful probe for the existence of physics beyond the Standard Model of particle physics. The ACME experiment searched for the eEDM with the world's highest sensitivity using cold ThO polar molecules (Nature, 562 (2018) 355-360). One of the improvements for the next generation of the ACME experiment is using silicon photomultipliers (SiPMs) as laser-induced fluorescence photon detectors instead of PMTs. We have developed a dedicated SiPM module and evaluated its performance. The SiPM module shows about 2.5 times higher detection efficiency than the PMTs used in the previous ACME measurement. Here we report on the design and performance of the SiPM module.

*Supported by the RECTOR program in Okayama University, JSPS KAKENHI (JP20KK0068, JP21J01252), NSF, Sloan and Moore Foundations.

Presenters

  • Ayami Hiramoto

    • Okayama University

Authors

  • Ayami Hiramoto

    • Okayama University

  • Daniel G Ang

    • Harvard University

  • David DeMille

    • University of Chicago
    • The University of Chicago
    • University of Chicago & Argonne National Laboratory

  • Collin Diver

    • Northwestern University

  • John M Doyle

    • Harvard University

  • Gerald Gabrielse

    • Northwestern University

  • Zhen Han

    • University of Chicago

  • Peiran Hu

    • University of Chicago

  • Nick R Hutzler

    • Caltech
    • California Institute of Technology

  • Daniel D Lascar

    • Northwestern University

  • Siyuan Liu

    • Northwestern University

  • Takahiko Masuda

    • Okayama Univ

  • Cole Meisenhelder

    • Harvard University

  • John Mitchell

    • Northwestern University

  • Cristian D Panda

    • UC Berkeley

  • Noboru Sasao

    • Okayama University

  • Satoshi Uetake

    • Okayama University

  • Maya Watts

    • Northwestern University

  • Xing Wu

    • Harvard University, University of Chicago

  • Koji Yoshimura

    • Okayama University