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TY - CONF AU - Nayak, S.K. AU - Anerella, M. AU - Blaskiewicz, M. AU - Brennan, J.M. AU - Gupta, R.C. AU - Mapes, M. AU - McIntyre, G.T. AU - Peggs, S. AU - Than, R. AU - Tuozzolo, J.E. AU - Verdú-Andrés, S. AU - Weiss, D. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Thermal Analysis of the RHIC Arc Dipole Magnet Cold Mass with the EIC Beam Screen 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 - The EIC will make use of the existing RHIC storage rings with their superconducting (SC) magnet arcs. A stainless-steel beam screen with co-laminated copper and a thin amorphous carbon (aC) film on the inner surface will be installed in the beam pipe of the SC magnets. The copper will reduce the beam-induced resistive-wall (RW) heating from operation with the higher intensity EIC beams, that if not addressed would make the magnets quench. Limiting the RW heating is also important to achieve an adequately low vacuum level. The aC coating will reduce secondary electron yield which could also cause heating and limit intensity. Among all the RHIC SC magnets, the arc dipoles present the biggest challenge to the design and installation of beam screens. The arc dipoles, which make up for 78% (2.5 km) length of all SC magnets in RHIC, expect the largest RW heating due to their smallest aperture. These magnets are also the longest (9.45 m each), thus experiencing the largest temperature rise over their length, and have a large sagitta (48.5 mm) that increases the difficulty to install the beam screen in place. This paper presents a detailed thermal analysis of the magnet-screen system. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2413 EP - 2416 KW - dipole KW - vacuum KW - electron KW - hadron KW - cryogenics DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-TUPAB381 UR - https://jacow.org/ipac2021/papers/tupab381.pdf ER -