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TY - CONF AU - Jain, V. AU - Borissov, E. AU - Gonin, I.V. AU - Grimm, C.J. AU - Kazakov, S. AU - Khabiboulline, T.N. AU - Lebedev, V.A. AU - Mishra, C.S. AU - Mitchell, D.V. AU - Nicol, T.H. AU - Pischalnikov, Y.M. AU - Rowe, A.M. AU - Sharma, N.K. AU - Yakovlev, V.P. ED - Schaa, Volker RW ED - Power, Maria ED - Shiltsev, Vladimir ED - White, Marion TI - 650 MHz Elliptical Superconducting RF Cavities for PIP-II Project J2 - Proc. of NAPAC2016, Chicago, IL, USA, October 9-14, 2016 C1 - Chicago, IL, USA T2 - North American Particle Accelerator Conference T3 - 3 LA - english AB - Proton Improvement Plan-II at Fermilab is an 800 MeV superconducting pulsed linac which is also capable of running in CW mode. The high energy section operates from 185 MeV to 800 MeV instigated using 650 MHz elliptical cavities. The low-beta (LB) βG =0.61 portion will accelerate protons from 185 MeV-500 MeV, while the high-beta (HB) βG = 0.92 portion of the linac will acceler-ate from 500 to 800 MeV. The development of both LB and HB cavities is taking place under the umbrella of the Indian Institutions Fermilab Collaboration (IIFC). This paper presents the design methodology adopted for both low-beta and high-beta cavities starting from the RF design yielding mechanical dimensions of the cavity cells and, then moving to the workable dressed cavity design. Designs of end groups (main coupler side and field probe side), helium vessel, coupler, and tuner are the same for both cavities everywhere where it is possible. The design, analysis and integration of dressed cavity are presented in detail. PB - JACoW CP - Geneva, Switzerland SP - 859 EP - 862 KW - cavity KW - ion KW - SRF KW - linac KW - simulation DA - 2017/01 PY - 2017 SN - 978-3-95450-180-9 DO - 10.18429/JACoW-NAPAC2016-WEB3CO03 UR - https://jacow.org/napac2016/papers/web3co03.pdf ER -