Title :
Power Switches Utilizing Superconducting Material for Accelerator Magnets
Author :
March, Stephen A. ; Ballarino, Amalia ; Yang, Yifeng
Author_Institution :
CERN, Eur. Organ. for Nucl. Res., Geneva, Switzerland
fDate :
6/1/2009 12:00:00 AM
Abstract :
Power switches that utilize superconducting material find application in superconducting systems. They can be used for the protection of magnets as a replacement for warm DC breakers, as well as for the replacement of cold diodes. This paper presents a comparison of switches made of various superconducting materials having transport currents of up to 600 A and switching times of the order of milliseconds. The switches operate in the temperature range 4.2-77 K and utilize stainless steel clad YBCO tape and MgB2 tape with a nickel, copper, and iron matrix. Results from simulations and tests are reported.
Keywords :
accelerator magnets; magnesium compounds; power semiconductor switches; superconducting materials; yttrium compounds; DC breaker; MgB2; YBCO; accelerator magnet; cold diodes; power switches; stainless steel clad tape; superconducting material; superconducting systems; temperature 4.2 K to 77 K; Critical current; HTS; inductive heating; resistive heating;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2017890
