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@inproceedings{valette:ipac2021-mopab026,
author = {M. Valette and D. Bruno and K.A. Drees and K.M. Hartmann and G. Heppner and K. Mernick and C. Mi and J.-L. Mi and R.J. Michnoff and J. Morris and F. Orsatti and E. Rydout and T. Samms and J. Sandberg and V. Schoefer and C. Schultheiss and T.C. Shrey and C. Theisen},
% author = {M. Valette and D. Bruno and K.A. Drees and K.M. Hartmann and G. Heppner and K. Mernick and others},
% author = {M. Valette and others},
title = {{RHIC Delayed Abort Experiments}},
booktitle = {Proc. IPAC'21},
pages = {126--129},
eid = {MOPAB026},
language = {english},
keywords = {experiment, kicker, injection, quadrupole, dipole},
venue = {Campinas, SP, Brazil},
series = {International Particle Accelerator Conference},
number = {12},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2021},
issn = {2673-5490},
isbn = {978-3-95450-214-1},
doi = {10.18429/JACoW-IPAC2021-MOPAB026},
url = {https://jacow.org/ipac2021/papers/mopab026.pdf},
note = {https://doi.org/10.18429/JACoW-IPAC2021-MOPAB026},
abstract = {{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.}},
}