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TY - CONF AU - Valette, M. AU - Bruno, D. AU - Drees, K.A. AU - Hartmann, K.M. AU - Heppner, G. AU - Mernick, K. AU - Mi, C. AU - Mi, J.-L. AU - Michnoff, R.J. AU - Morris, J. AU - Orsatti, F. AU - Rydout, E. AU - Samms, T. AU - Sandberg, J. AU - Schoefer, V. AU - Schultheiss, C. AU - Shrey, T.C. AU - Theisen, C. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - RHIC Delayed Abort Experiments J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - For RHIC to operate at its top energy (100 GeV/n) while protecting the future sPHENIX detector, spontaneous and asynchronous firing of abort kicker modules (pre-fires) have to be avoided. A new triggering circuit for the abort kickers was implemented with relatively slow mechanical relays in series with the standard fast thyratron tubes. The relays prevents unwanted pre-fires during operation, but comes at the expense of a long latency - about 7 milliseconds - between the removal of beam permit and the actual firing of the abort kickers. Protection considerations of RHIC’s superconducting magnets forbid delaying energy extraction from the main dipoles and quadrupoles for too long after a quench. The beam has thus to circulate in both RHIc rings for a few milliseconds as the current in dipole and quadrupole circuit is being extracted. We present the results of delayed abort experiments conducted in July 2018 with the analysis of fast orbit and tune measurements and discuss the safety implications of this implementation for future RHIC operation. PB - JACoW Publishing CP - Geneva, Switzerland SP - 126 EP - 129 KW - experiment KW - kicker KW - injection KW - quadrupole KW - dipole DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-MOPAB026 UR - https://jacow.org/ipac2021/papers/mopab026.pdf ER -