Title :
Superconducting rectifier fluxpump for magnet system of the CMD-2 detector
Author :
Barkov, L.M. ; Bashtovoy, N.S. ; Karpov, S.V. ; Okhapkin, V.S. ; Ruban, A.A. ; Smakhtin, V.P. ; Snopkov, I.G. ; Zhuravkov, I.V.
Author_Institution :
Budker Inst. of Nucl. Phys., Novosibirsk, Russia
Abstract :
A superconducting rectifier fluxpump has been used for the dc power supply of the magnet system of the CMD-2 detector on the VEPP-2M collider at the Budker Institute of Nuclear Physics in Russia since 1989. The fluxpump provides a complete pumping cycle: charging the magnet system, stabilization of the magnetic field, and discharging. The fluxpump consists of an air-core current step-up superconducting transformer and two groups of thermally controlled superconducting switches arranged as a fullwave rectifier. Critical output current during the test was 5.4 kA. The accuracy of the field stabilization provided by the fluxpump is 2.5/spl middot/10/sup -5/. The fluxpump has exhibited reliable and safe operation during its entire history of use.
Keywords :
particle calorimetry; power supplies to apparatus; rectifying circuits; scintillation counters; solid-state rectifiers; superconducting magnets; superconducting switches; superconducting transformers; 5.4 kA; Budker Institute of Nuclear Physics; CMD-2 detector magnet system; VEPP-2M collider; air-core current step-up superconducting transformer; critical output current; dc power supply; discharging; fullwave rectifier; magnet system charging; magnetic field stabilization; pumping cycle; reliable safe operation; superconducting rectifier fluxpump; superconducting solenoids; thermally controlled superconducting switches; Detectors; Magnetic fields; Magnetic separation; Nuclear physics; Power supplies; Rectifiers; Solenoids; Superconducting magnets; Switches; Testing;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
