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TY - CONF AU - Palmer, R.B. AU - Berg, J.S. AU - Blaskiewicz, M. AU - Fedotov, A.V. AU - Montag, C. AU - Parker, B. AU - Witte, H. ED - Schaa, Volker RW ED - Petit-Jean-Genaz, Christine ED - Ko, In Soo ED - Kim, Dong Eon ED - Kim, Kyung Sook TI - Higher Luminosity eRHIC Ring-Ring Options and Upgrade J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - Lower risk ring-ring alternatives to the BNL linac-ling~[linacring] eRHIC electron ion collider (EIC) are discussed. The baseline from the Ring-Ring Working Group~[ringring] has a peak proton-electron luminosity of ≈§I{1.2e33}{cm⁻².s⁻¹}. An option has final focus quadrupoles starting immediately after the detector at 4.5~m, instead of at 32~m in the baseline. This allows the use of lower β^{*}s. It also uses more, 720, lower intensity, bunches, giving reduced IBS emittance growth and requiring only low energy pre-cooling. It has a peak luminosity of ≈§I{7e33}{cm⁻².s⁻¹}. An upgrade of this option, requiring magnetic, or coherent, electron cooling, has 1440 bunches and peak luminosity of ≈§I{15e33}{cm⁻².s⁻¹}. PB - JACoW CP - Geneva, Switzerland SP - 2472 EP - 2474 KW - electron KW - luminosity KW - emittance KW - quadrupole KW - linac DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-WEPMW023 UR - http://jacow.org/ipac2016/papers/wepmw023.pdf ER -