Journal
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Volume 632, Issue 1, Pages 157-163Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.nima.2010.12.176
Keywords
Penning traps; Magnetic-field stabilization; Temperature stabilization; Pressure stabilization; SHIPTRAP
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Funding
- German BMBF [06GF1861, 06GF91031, RUS-07/015]
- GSI F E program
- Russian Minobrnauki [2.2.1]
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Penning traps have proven to be powerful tools for the determination of nuclear masses with high accuracy. A crucial parameter for precision mass measurements in Penning traps is the accurate determination of the magnetic-field strength. However, the magnetic field of a superconducting magnet is not constant in time, but changes due to intrinsic effects of the solenoid and external perturbations. These effects have been investigated for SHIPTRAP. Furthermore, a stabilization of the temperature in the magnet bore as well as of the pressure in the liquid-helium cryostat has been implemented. Thus, the magnetic-field related uncertainties have been reduced to 7(6) x 10(-11)/h. (C) 2010 Elsevier B.V. All rights reserved.
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