A.D. McInturff

TL;DR: The time dependence of magnetic fields in the superconducting magnets of the Fermilab Tevatron is discussed in this paper, where it is shown that small but important changes in the magnetic fields occur with (ln t) time dependencies.

TL;DR: In this paper, the time variation in the magnetic field of a model Tevatron dipole magnet at constant excitation current has been studied and it has been observed that variations in symmetry allowed harmonic components over long time ranges show a log t behavior indicative of "flux creep".

TL;DR: The most recent magnet in this series was tested over the temperature range 4.2 K to 15 K using high pressure gas cooling as discussed by the authors, and the maximum field 4.8 T, was achieved at 4. 2 K. At higher temperatures the field decreased approximately linearly with temperature passing through 4.0 T at just under 8 K.

TL;DR: In this paper, four full-scale SSC (Superconducting Super Collider) research and development dipole magnets, incorporating successive mechanical design improvements, have been quench-tested and three of the magnets are heavily instrumented with sensors to measure their mechanical behavior and verify the effectiveness of the mechanical improvements.