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Session NH: Mini-symposium on Instrumentation for Physics Beyond the Standard Model IB

8:30 AM–10:18 AM, Sunday, October 16, 2016
Room: Pavilion Ballroom C

Chair: Kent Leung, NCSU

Abstract ID: BAPS.2016.DNP.NH.9

Abstract: NH.00009 : Magnetic trap design for precision antihydrogen gravity measurement in ALPHA-g at CERN

10:06 AM–10:18 AM

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Authors:

  Chukman So
    (University of Calgary/TRIUMF)

  P. Amadruz
    (TRIUMF)

  W. Bertsche
    (U. Manchester)

  A. Capra
    (TRIUMF)

  N. Evetts
    (U. British Columbia/TRIUMF)

  J. Fajans
    (UC Berkeley)

  W. Frazer
    (TRIUMF)

  M.C. Fujiwara
    (TRIUMF)

  D. Gill
    (TRIUMF)

  J. Hangst
    (Aarhus U.)

  W. Hardy
    (U. British Columbia)

  M. Hayden
    (Simon Fraser U.)

  R. Henderson
    (U. Calgary)

  P. Lu
    (TRIUMF)

  L. Kurchaninov
    (TRIUMF)

  N. Madsen
    (U. Swansea)

  J. McKenna
    (TRIUMF)

  S. Menary
    (York U.)

  T. Momose
    (U. British Columbia)

  K. Olchanski
    (TRIUMF)

  A. Olin
    (TRIUMF)

  F. Robicheaux
    (Purdue U.)

  J. Thompson
    (York U.)

  R. Thompson
    (U. Calgary)

  J. Wurtele
    (UC Berkeley)

ALPHA first measured the gravitational mass of antihydrogen atoms in a magnetic minimum trap in 2013, limiting anomalous gravity-like forces coupled to the antiatoms to \textless 75 times the ordinary gravity. A new apparatus is being designed to tighten the limit to much better than order unity. It entails a \textasciitilde 2 meter long magnetic trap with a vertical long axis to enhance gravity signal. The trap magnets are designed to ensure magnetic up-down asymmetry \textgreater 1e-5 T in the central region. This field control is achieved by carefully considering the effect of winding errors, the inter-connections between current loops, the location of current leads, shape of slices, as well as the detailed characteristics of superconducting wires.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2016.DNP.NH.9