Author: Rowe, A.M.
Paper Title Page
MOYA05
 SRF Technology for PIP-II and III  
 
  • A.M. Rowe
    Fermilab, Batavia, Illinois, USA
  
  The Proton Improvement Plan-II (PIP-II) is an 800 MeV SRF LINAC Fermilab will build as part of a critical upgrade to the accelerator complex required to serve LBNF/DUNE. The LINAC is a CW capable SRF machine designed to accelerate H− ions with 2 mA average beam current to 800 MeV which will be transported to the existing Booster and Main Injector accelerators. In combination, these accelerators will deliver 120 GeV beam with 1.2 MW beam power to the LBNF target. The PIP-II SRF LINAC is constructed of five cryomodule types starting with a CW 162.5 MHz, β=0.11 half-wave which leads to a β=0.22 and β=0.47 325 MHz single spokes, and concludes with β=0.61 and β=0.92 650 MHz elliptical types. In the future, the PIP-II LINAC will be the front end of PIP-III which will deliver multi-megawatt beam power to DUNE via the Main Injector. The SRF alternative for PIP-III is an SRF LINAC extended from 800MeV to 8 GeV which will inject beam into the Main Injector. This presentation focuses on the five PIP-II cryomodules and the development of critical ancillary components. In several cases, contributions from the India DAE and other International Collaborators are highlighted.  
slides icon Slides MOYA05 [3.050 MB]  
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TUPB071 Test Result of 650 MHz, Beta 0.61 Single-cell Niobium Cavity 553
 
  • S. Seth, P. Bhattacharyya, A. Dutta Gupta, S. Ghosh, S. Ghosh, A. Mandal, S. Som
    VECC, Kolkata, India
  • A. Grassellino, T.N. Khabiboulline, O.S. Melnychuk, C.S. Mishra, T.H. Nicol, A.M. Rowe, D.A. Sergatskov
    Fermilab, Batavia, Illinois, USA
  • M.P. Kelly, T. Reid
    ANL, Argonne, Illinois, USA
  • K.K. Mistri, P.N. Prakash
    IUAC, New Delhi, India
  
  VECC has been involved in the design, analysis and development of 650 MHz, beta 0.61 (LB650), elliptical Superconducting RF linac cavity, as part of research and development activities on SRF cavities and associated technologies under Indian Institutions Fermilab Collaboration (IIFC). A single-cell niobium cavity has been indigenously designed and developed at VECC, with the help of Electron Beam Welding (EBW) facility at IUAC, New Delhi. Various measurements, processing and testing at 2K in Vertical Test Stand (VTS) of the single-cell cavity was carried out at ANL and Fermilab, USA, with active participation of VECC engineers. It achieved a maximum accelerating gradient(Eacc) of 34.5 MV/m with Quality Factor of 2·109 and 30 MV/m with Quality Factor of 1.5·1010. This is probably the highest accelerating gradient achieved so far in the world for LB650 cavities. This paper describes the design, fabrication and measurement of the single cell niobium cavity. Cavity processing and test results of Vertical Test of the single-cell niobium cavity are also presented.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-TUPB071  
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