A new cryogenic apparatus to search for the neutron electric dipole moment

M. W. Ahmed, R. Alarcon, A. Aleksandrova, S. Baeßler, L. Barron-Palos, L. M. Bartoszek, D. H. Beck, M. Behzadipour, I. Berkutov, J. Bessuille, M. Blatnik, M. Broering, L. J. Broussard, M. Busch, R. Carr, V. Cianciolo, S. M. Clayton, M. D. Cooper, C. Crawford, S. A. CurrieC. Daurer, R. Dipert, K. Dow, D. Dutta, Y. Efremenko, C. B. Erickson, B. W. Filippone, N. Fomin, H. Gao, R. Golub, C. R. Gould, G. Greene, D. G. Haase, D. Hasell, A. I. Hawari, M. E. Hayden, A. Holley, R. J. Holt, P. R. Huffman, E. Ihloff, S. K. Imam, T. M. Ito, M. Karcz, J. Kelsey, D. P. Kendellen, Y. J. Kim, E. Korobkina, W. Korsch, S. K. Lamoreaux, E. Leggett, K. K.H. Leung, A. Lipman, C. Y. Liu, J. Long, S. W.T. MacDonald, M. Makela, A. Matlashov, J. D. Maxwell, M. Mendenhall, H. O. Meyer, R. G. Milner, P. E. Mueller, N. Nouri, C. M. O'Shaughnessy, C. Osthelder, J. C. Peng, S. I. Penttila, N. S. Phan, B. Plaster, J. C. Ramsey, T. M. Rao, R. P. Redwine, A. Reid, A. Saftah, G. M. Seidel, I. Silvera, S. Slutsky, E. Smith, W. M. Snow, W. Sondheim, S. Sosothikul, T. D.S. Stanislaus, X. Sun, C. M. Swank, Z. Tang, R. Tavakoli Dinani, E. Tsentalovich, C. Vidal, W. Wei, C. R. White, S. E. Williamson, L. Yang, W. Yao, A. R. Young

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

A cryogenic apparatus is described that enables a new experiment, nEDM@SNS, with a major improvement in sensitivity compared to the existing limit in the search for a neutron Electric Dipole Moment (EDM). This apparatus uses superfluid 4He to produce a high density of Ultra-Cold Neutrons (UCN) which are contained in a suitably coated pair of measurement cells. The experiment, to be operated at the Spallation Neutron Source at Oak Ridge National Laboratory, uses polarized 3He from an Atomic Beam Source injected into the superfluid 4He and transported to the measurement cells where it serves as a co-magnetometer. The superfluid 4He is also used as an insulating medium allowing significantly higher electric fields, compared to previous experiments, to be maintained across the measurement cells. These features provide an ultimate statistical uncertainty for the EDM of 2-3× 10-28 e-cm, with anticipated systematic uncertainties below this level.

Original languageEnglish
Article numberP11017
JournalJournal of Instrumentation
Volume14
Issue number11
DOIs
StatePublished - 2019

Bibliographical note

Publisher Copyright:
© 2019 IOP Publishing Ltd and Sissa Medialab.

Funding

FundersFunder number
National Science Foundation Arctic Social Science Program1506416, 1440011, 1506459, 1205977, 1306547, 1812340
National Science Foundation Arctic Social Science Program

    Keywords

    • Large detector systems for particle and astroparticle physics
    • Neutron detectors (cold
    • Noble liquid detectors (scintillation
    • double-phase)9Cryogenic detectors
    • fast neutrons)
    • ionization
    • thermal

    ASJC Scopus subject areas

    • Instrumentation
    • Mathematical Physics

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