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Cylindrical Penning traps and self-shielding superconducting solenoids for high precision experiments

1992; IOP Publishing; Volume: 46; Issue: 3 Linguagem: Inglês

10.1088/0031-8949/46/3/009

1402-4896

W. Jhe, David F. Phillips, L. Haarsma, Jun Tan, G. Gabrielse,

Cold Atom Physics and Bose-Einstein Condensates

The antiproton and proton inertial masses have been measured to be the same to a fractional accuracy of 4 × 10−8 by our TRAP collaboration at CERN. Two key experimental advances were employed which have a wider applicability for mass spectroscopy. A high-precision cylindrical trap with open-endcap electrodes allows free access to the trap center for particle loading, and a self-shielding superconducting solenoids system cancels fluctuations in the ambient magnetic fields.