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TY - CONF AU - Fischer, W. AU - Blaskiewicz, M. AU - Mapes, M. AU - Minty, M.G. AU - Montag, C. AU - Nayak, S.K. AU - Ptitsyn, V. AU - Sandberg, J. AU - Thieberger, P. AU - Tsoupas, N. AU - Tuozzolo, J.E. AU - Yip, K. ED - Yamazaki, Yoshishige ED - Raubenheimer, Tor ED - McCausey, Amy ED - Schaa, Volker RW TI - RHIC Beam Abort System Upgrade Options J2 - Proc. of NAPAC2019, Lansing, MI, USA, 01-06 September 2019 CY - Lansing, MI, USA T2 - North American Particle Accelerator Conference T3 - 4 LA - english AB - The RHIC ion (polarized proton) beam intensity has increased to 4x (1.1x) of the original design specifications. In 2013 proton beam currents overcame the eddy current reduction design features in the RHIC beam abort system kicker magnets causing ferrite heating and resulting in a reduction of the kicker strength. In 2014, the abort kicker ferrites were changed, the eddy current reduction design was upgraded, and an active ferrite cooling loop installed to prevent heating. For ions the beam dump vacuum window was changed from stainless steel to a titanium alloy and the adjacent beam diffuser block carbon material was changed to allow for higher ion intensities. A thicker beam pipe was installed to prevent secondaries from quenching the adjacent superconducting quadrupole. With these upgrades there is at least a factor 2 of safety margin for the demonstrated intensities to date. For a further increase in the intensity for RHIC and eRHIC we evaluate upgrade options for the beam abort system. PB - JACoW Publishing CP - Geneva, Switzerland SP - 536 EP - 538 KW - kicker KW - vacuum KW - proton KW - operation KW - heavy-ion DA - 2019/10 PY - 2019 SN - 2673-7000 SN - 978-3-95450-223-3 DO - doi:10.18429/JACoW-NAPAC2019-TUPLO03 UR - http://jacow.org/napac2019/papers/tuplo03.pdf ER -