The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Wang, X. AU - Caspi, S. AU - Ghosh, A.K. AU - Gourlay, S.A. AU - Gupta, R.C. AU - Jain, A.K. AU - Sabbi, G.L. AU - Wanderer, P. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - Persistent Current Effects in RHIC Arc Dipole Magnets Operated at Low Currents J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - The Relativistic Heavy Ion Collider (RHIC) arc dipoles at Brookhaven National Laboratory are operated at low field for low energy Au-Au studies. Indications of strong nonlinear magnetic fields have been observed at these low currents due to the persistent current effects of superconducting NbTi filaments. We report the details of the measurement and calculation of the field errors due to persistent current effect. The persistent current induced field errors calculated with a model based on the strand magnetization data agree well with the measurements of a spare arc dipole magnet. The dependence of the persistent current effects on the park current is calculated based on the validated model. PB - JACoW CP - Geneva, Switzerland SP - 170 EP - 173 KW - ion KW - dipole KW - operation KW - ion-effects KW - detector DA - 2017/01 PY - 2017 SN - 978-3-95450-180-9 DO - 10.18429/JACoW-NAPAC2016-MOPOB49 UR - https://jacow.org/napac2016/papers/mopob49.pdf ER -