WETEA —  Technology 1   (03-Jul-19   08:00—10:00)
Chair: E. Kako, KEK, Ibaraki, Japan
Paper Title Page
WETEA1
ESS Technology Development at IPNO and CEA Paris-Saclay  
 
  • G. Devanz
    CEA-IRFU, Gif-sur-Yvette, France
 
  The French In-kind contribution to the superconducting linac of the European Spallation Source ESS consists in the development from design to delivery of the thirteen spoke cryomodules by CNRS IPN Orsay and of the nine medium beta and twenty-one high beta elliptical cavity cryomodules by CEA Paris-Saclay. Recently, prototype cryomodules serving the purpose of demontrating the chosen technology, one for spokes, one for medium beta ellipticals have been built and tested, with additional contributions of Uppsala University and INFN Lasa. The component design and performance in the recent cryomodule tests at 2 K are presented, as well as the individual testing activities of pre-series and series components.  
slides icon Slides WETEA1 [7.235 MB]  
 
WETEA2
SRF Cryomodules for PIP-2 at Fermilab  
 
  • G. Wu
    Fermilab, Batavia, Illinois, USA
 
  Funding: The work is supported by Fermilab which is operated by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the United States Department of Energy.
The Proton Improvement Plan-II (PIP-II) is an essential upgrade to the Fermilab accelerator complex to provide powerful, high-intensity proton beams to the laboratory’s experiments. Design challenges include the areas of high Q cavities, high power couplers, resonance control, and oversea transportation. The recent developments of cavities and cryomodules for the PIP-2 project will be described.
 
slides icon Slides WETEA2 [12.357 MB]  
 
WETEA3 Status of the IFMIF/EVEDA Superconducting Linac -1
 
  • N. Bazin, G. Devanz, H. Jenhani, O. Piquet
    CEA-DRF-IRFU, France
  • S. Chel
    CEA-IRFU, Gif-sur-Yvette, France
  • T. Ebisawa
    QST, Aomori, Japan
  • G. Phillips
    F4E, Germany
  • D. Regidor, F. Toral
    CIEMAT, Madrid, Spain
 
  The IFMIF accelerator aims to provide an accelerator-based D-Li neutron source to produce high intensity high energy neutron flux to test samples as possible candidate materials to a full lifetime of fusion energy reactors. A prototype of the low energy part of the accelerator (LIPAc) is under construction at Rokkasho Fusion Institute in Japan. It includes one cryomodule containing 8 half-wave resonators (HWR) operating at 175 MHz and eight focusing solenoids. The talk will cover the progress of developments in the IFMIF/EVEDA cryomodule: the qualification of 8 cavities, the RF conditioning results of 8 high-power couplers, the manufacturing and test of the 8 superconducting solenoids and the equivalent operational equivalent tests performed at Saclay. The assembling status of the cryomodule at Rokkasho site will also be presented.  
slides icon Slides WETEA3 [11.091 MB]  
 
WETEA4
Production and Performance of LCLS-II Cryomodules  
 
  • A. Burrill
    SLAC, Menlo Park, California, USA
 
  This talk will present the current status of the testing and installation of the LCLS-II 1.3 GHz cryomodules. The overall performance obtained in testing, quality factor and gradient, as well as the impact of field emission, multipacting and microphonics will be discussed. In addition the current status of the cryomodule transport from the partner labs to SLAC as well as the installation at SLAC will be presented.  
slides icon Slides WETEA4 [8.338 MB]  
 
WETEA5 FRIBCavity and Cryomodule Performance, Comparison with the Design and Lessons Learned -1
 
  • S.J. Miller, H. Ao, B. Bird, B. Bullock, N.K. Bultman, F. Casagrande, C. Compton, J. Curtin, K. Elliott, A. Facco, V. Ganni, I. Grender, W. Hartung, J.D. Hulbert, S.H. Kim, P. Manwiller, E.S. Metzgar, D.G. Morris, P.N. Ostroumov, J.T. Popielarski, L. Popielarski, M.A. Reaume, K. Saito, M. Shuptar, J. Simon, B.P. Tousignant, D.R. Victory, J. Wei, J.D. Wenstrom, K. Witgen, M. Xu, T. Xu
    FRIB, East Lansing, Michigan, USA
  • A. Facco
    INFN/LNL, Legnaro (PD), Italy
  • M.P. Kelly
    ANL, Argonne, Illinois, USA
  • M. Wiseman
    JLab, Newport News, Virginia, USA
 
  Funding: Work supported by the U.S. Department of Energy Office of Science under Cooperative Agreement DE-SC0000661 and the National Science Foundation under Cooperative Agreement PHY-1102511.
The superconducting driver linac for the Facility for Rare Isotope Beams (FRIB) requires the production of 46 cryomodules. Design is complete on all six cryomodule types which utilize four superconducting radio frequency (SRF) cavity designs and superconducting solenoids. The FRIB cryomodules utilize an innovative bottom up approach to achieve alignment tolerance and simplify production assembly. The cryomodule testing includes qualification of the resonator performance, fundamental power couplers, tuners, and cryogenic systems. FRIB beam commissioning has been performed on 15 cryomodules in the FRIB and validates the FRIB cryomodule bottom up assembly and alignment method. This paper will report the FRIB cryomodule design, performance, and the alignment results and their impact on beam commissioning.
 
slides icon Slides WETEA5 [14.640 MB]  
 
WETEA6
Successful Beam Commissioning in STF-2 Cryomodules for ILC  
 
  • Y. Yamamoto, M. Akemoto, D.A. Arakawa, S. Araki, A. Aryshev, M. Egi, M.K. Fukuda, K. Hara, H. Hayano, Y. Honda, T. Honma, E. Kako, H. Katagiri, M. Kawamura, N. Kimura, Y. Kojima, Y. Kondou, T. Konomi, T. Matsumoto, S. Michizono, T. Miura, T. Miyajima, Y. Morikawa, H. Nakai, H. Nakajima, N. Nakamura, K. Nakanishi, T. Obina, T. Oyama, F. Qiu, T. Saeki, H. Sakai, T. Sanami, M. Shimada, H. Shimizu, T. Shishido, S.I. Takahara, K. Umemori, A. Yamamoto
    KEK, Ibaraki, Japan
  • M. Kuriki, S. Notsu
    Hiroshima University, Graduate School of Science, Higashi-Hiroshima, Japan
  • S. Matsuba
    JASRI, Hyogo, Japan
  • K. Sakaue
    The University of Tokyo, The School of Engineering, Tokyo, Japan
 
  Beam commissioning of the STF-2 accelerator was successfully done at the Superconducting RF Test Facility (STF) in KEK from February to March 2019. As a result of various cavity tuning, LLRF control tuning, and beam tuning, the beam energy finally reached 271 MeV, and the accelerating gradient of each cavity estimated from beam energy was 32.0 MV/m. This result satisfies 31.5 MV/m, which is the operating specification of the International Linear Collider (ILC) project, and is an important milestone in the ILC technology demonstration. In this talk, we will report on the detailed results of beam commissioning.  
slides icon Slides WETEA6 [13.702 MB]