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RIS citation export for MOPMP046: Mitigation of Persistent Current Effects in the RHIC Superconducting Magnets

AU  - Liu, C.
AU  - Bruno, D.
AU  - Marusic, A.
AU  - Minty, M.G.
AU  - Thieberger, P.
AU  - Wang, X.
ED  - Boland, Mark
ED  - Tanaka, Hitoshi
ED  - Button, David
ED  - Dowd, Rohan
ED  - Schaa, Volker RW
ED  - Tan, Eugene
TI  - Mitigation of Persistent Current Effects in the RHIC Superconducting Magnets
J2  - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019
CY  - Melbourne, Australia
T2  - International Particle Accelerator Conference
T3  - 10
LA  - english
AB  - Persistent currents in superconducting magnet introduce errors in the magnetic fields especially at low operating currents. In addition, their decay cause magnetic field variations therefore drifts of beam orbits, tunes and chromaticities. To reduce field errors and suppress magnetic field variations, new magnetic cycles were proposed for low energy beam operation at RHIC. In the new magnetic cycles, the magnet current oscillates around the operating current with diminishing amplitude a few times before it settles. The new magnetic cycle has been demonstrated experimentally to reduce field errors and the amplitude of magnetic field variations significantly and is essential for the ongoing RHIC Beam Energy Scan II (BES-II) program. This article will present beam-based experimental studies of the persistent current effects with the new magnetic cycle, and discuss its application in RHIC and accelerators based on superconducting magnet in general.
PB  - JACoW Publishing
CP  - Geneva, Switzerland
SP  - 548
EP  - 551
KW  - dipole
KW  - quadrupole
KW  - sextupole
KW  - injection
KW  - betatron
DA  - 2019/06
PY  - 2019
SN  - 978-3-95450-208-0
DO  - DOI: 10.18429/JACoW-IPAC2019-MOPMP046
UR  - http://jacow.org/ipac2019/papers/mopmp046.pdf
ER  -