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.

*Marsico, NSF, NIST, AFOSR, Sloan, Moore

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Publication: [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.

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