S Brunner et al 1995 Meas. Sci. Technol. 6 222 doi:10.1088/0957-0233/6/2/015
S Brunner, T Engel and G Werth
Show affiliationsFluctuations and drifts of the magnetic field of superconducting solenoids are at present the main limitation in the precision of Penning ion trap mass spectrometers. Stabilities up to 10-11h-1 are required to exploit fully the inherent possibilities of the method. Here we discuss possible reasons for these instabilities and demonstrate substantial improvement in stability upon stabilizing the temperature of the cryostat by helium gas pressure control. The improvement is about two orders in magnitude relative to the case of an unstabilized magnet.
84.71.Ba Superconducting magnets; magnetic levitation devices
07.10.-h Mechanical instruments and equipment
Issue 2 (February 1995)
S Brunner et al 1995 Meas. Sci. Technol. 6 222
A Chattopadhyay and C E Seeley 1994 Smart Mater. Struct. 3 98
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