Development of a high-precision Penning trap magnetometer for the LEBIT facility

•A miniature Penning trap to continuously monitor B field fluctuations is proposed.•Optimal trap dimensions for B field monitoring in a 9.4T magnet are identified.•The magnetometer was successfully prototyped and tested in a 7T magnet.•B field monitoring with a precision of 2 parts in 108 in 15min w...

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Bibliographic Details
Published in:International journal of mass spectrometry 2015-03, Vol.379, p.1-8
Main Authors: Lincoln, D.L., Baker, R., Benjamin, A.L., Bollen, G., Redshaw, M., Ringle, R., Schwarz, S., Sonea, A., Valverde, A.A.
Format: Article
Language:English
Subjects:
FT-ICR
Image charge detection
Magnetometer
Mass measurements
Penning trap
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Summary:•A miniature Penning trap to continuously monitor B field fluctuations is proposed.•Optimal trap dimensions for B field monitoring in a 9.4T magnet are identified.•The magnetometer was successfully prototyped and tested in a 7T magnet.•B field monitoring with a precision of 2 parts in 108 in 15min was achieved. [Display omitted] A high-precision magnetometer based on a miniature Penning trap was developed to support Penning trap mass spectrometry of rare isotopes. Magnetic field monitoring with a relative precision of 2 parts in 108 with a temporal resolution of 15 min was demonstrated. The use of this magnetometer at the Low-Energy Beam and Ion Trap (LEBIT) facility at Michigan State University will virtually eliminate the need to perform reference measurements during on-line mass measurements of rare isotopes and allow for the best use of precious on-line measurement time.
ISSN:1387-3806
1873-2798
DOI:10.1016/j.ijms.2014.08.005