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Progress on the JILA Gen. III eEDM Experiment

ORAL

Abstract

The third generation (Gen. III) apparatus for the measurement of the electron electric dipole moment (eEDM) at JILA utilizes ThF+, rather than HfF+, because: (i) the eEDM sensitive state of ThF+ promises a longer coherence time (~ 20 seconds) [1,2], and (ii) its 50% larger effective electric field increases eEDM sensitivity [3,4].  The “conveyor belt” of 100 consecutive ion traps, named the Bucket Brigade (B.B.) will continuously load and read out ThF+, allowing for an increased duty cycle without compromising long interrogation times.  In addition, the system will include cryogenics to further increase the coherence time. We are currently designing the prototype, a small-scale B.B. with only one ion trap. The scaled-down version will allow us to test out the ion translation, ion detection, and cryogenics as well as observe the 20-second coherence time. Here, we present the progress on the cryogenic design and ion optics for detection of the photodissociated products for the Gen. III eEDM experiment at JILA. 

[1] Gresh, Daniel N., et al. Journal of Molecular Spectroscopy 319 (2016): 1-9.

[2] Zhou, Yan et al. J. Mol. Spec. 358, (2019) 1-16

[3] Skripnikov, L. V., and A. V. Titov. Physical Review A 91.4 (2015): 042504.

[4] Denis, Malika et al. New J. Phys. 17 043005.

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Publication: [1] Gresh, Daniel N., et al. Journal of Molecular Spectroscopy 319 (2016): 1-9.<br>[2] Zhou, Yan et al. J. Mol. Spec. 358, (2019) 1-16<br>[3] Skripnikov, L. V., and A. V. Titov. Physical Review A 91.4 (2015): 042504.<br>[4] Denis, Malika et al. New J. Phys. 17 043005.

Presenters

  • Sun Yool Park

    University of Colorado, Boulder

Authors

  • Sun Yool Park

    University of Colorado, Boulder

  • Kia Boon Ng

    University of Colorado, Boulder

  • Noah Schlossberger

    JILA

  • Anzhou Wang

    JILA

  • Yan Zhou

    University of Colorado, Boulder

  • Tanya Roussy

    University of Colorado, Boulder

  • Trevor Wright

    JILA

  • Luke A Caldwell

    Imperial College London, JILA

  • Tanner Grogan

    JILA

  • Yuval Shagam

    JILA

  • Antonio Vigil

    JILA, CU Boulder

  • Gustavo Santaella

    JILA, CU Boulder

  • Madeline Pettine

    JILA, CU Boulder

  • Jun Ye

    JILA and University of Colorado Boulder, JILA, University of Colorado, Boulder, University of Colorado, Boulder, JILA, NIST, and University of Colorado Boulder, JILA, University of Colorado Boulder, JILA, University of Colorado and National Institute of Standards and Technology, and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA, National Institute of Standards and Technology and Department of Physics, University of Colorado, Boulder, Colorado 80309, USA, JILA, NIST, and Department of Physics, University of Colorado, Boulder, JILA, NIST, and University of Colorado, Boulder, JILA, NIST, and University of Colorado at Boulder

  • Eric A Cornell

    National Institute of Standards and Technology Boulder, Boulder