1000-A cryotrons for superconducting-magnet flux pumps
- 1 December 1974
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 45 (12) , 1520-1522
- https://doi.org/10.1063/1.1686551
Abstract
Cryotrons are being developed for a low temperature flux pump power supply to energize superconducting coils without the excessive helium boiloff characteristic of high current input leads. The cryotrons have been tested to 1200 A at frequencies up to 40 Hz. For 1000 A, the optimum operating frequency is presently 5 Hz (determined by the current transfer rate and the normal cryotron gate resistance). The cryotron gates are Pb‐4% Sb and have a normal state resistance of 6 μΩ (resistivity 3.8×10−7 Ω‐cm).Keywords
This publication has 2 references indexed in Scilit:
- Helium Vapor Cooled Current LeadsReview of Scientific Instruments, 1967
- Superconductive power supply and its application for electrical flux pumpingCryogenics, 1964