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Mitchell, D.V.

Paper Title Page
TU5PFP058 Construction of a 3.9 GHz Superconducting RF Cavity Module at Fermilab 957
 
  • H.T. Edwards, T.T. Arkan, M.H. Foley, M. Ge, E.R. Harms, A. Hocker, T.N. Khabiboulline, M.W. McGee, D.V. Mitchell, D.R. Olis, A.M. Rowe, N. Solyak
    Fermilab, Batavia
 
 

Funding: Work supported by the U.S. Department of Energy under contract No. DE-AC02-07CH11359.


Fermilab is in a collaboration with DESY to provide a cryomodule containing 4-3.9 GHz superconducting RF cavities to be placed in TTF/FLASH. The purpose of this 'Third Harmonic' module is to linearize the nonlinear beam energy-time profile produced by the 1.3 GHz accelerating gradient. The completed module has now been shipped to DESY and is awaiting cold, powered testing and installation into FLASH later this year. We report on experience with fabricating, testing, assembling, and shipping the module and its components with a focus on cavity test results.

 
WE6RFP005 Plan of the S1-Global Cryomodules for ILC 2790
 
  • N. Ohuchi, H. Hayano, N. Higashi, H. Nakai, K. Tsuchiya, A. Yamamoto
    KEK, Ibaraki
  • T.T. Arkan, H. Carter, M.S. Champion, J. Grimm, J.S. Kerby, D.V. Mitchell, T.J. Peterson, M.C. Ross
    Fermilab, Batavia
  • S. Barbanotti, C. Pagani, P. Pierini
    INFN/LASA, Segrate (MI)
  • L. Lilje
    DESY, Hamburg
 
 

In an attempt at demonstrating an average field gradient of 31.5 MV/m as per the design accelerating gradient for ILC, a program called S1-Global is in progress as an international research collaboration among KEK, INFN, FNAL, DESY and SLAC. The S1-Global cryomodule will contain eight superconducting cavities from FNAL, DESY and KEK. The cryomodule will be constructed by joining two half-size cryomodules, each 6 m in length. The module containing four cavities from FNAL and DESY will be constructed by INFN. The design of this module is based on an improved 3rd generation TTF design. KEK will modify the 6-meter STF cryomodule to contain four KEK cavities. The designs of the cryomodules are ongoing between these laboratories, and the operation of the system is scheduled at the KEK-STF from June 2010. In this paper, the S1-Global cryomodule plan and the module design will be presented. ‘S1-Global collaboration’ as a co-author.