2nd Collaboration Meeting on X-band Accelerator Structure Design and Test-Program

Europe/Zurich
Building No.4 Seminar hall (KEK)

Building No.4 Seminar hall

KEK

Tsukuba, Japan
Sami Tantawi, Toshiyasu Higo (KEK), Walter Wuensch
Description
The collaboration meeting on X-Band Accelerator Structure Design and Test Programs is an annual meeting to discuss aspects of design, manufacturing, and testing of high-gradient microwave linear accelerators based on room-temperature accelerator structures. The primary goal of this effort is to push forward the relevant technologies to a level that is readily applicable to highly reliable, higher-gradient accelerators of various scales, such as those needed for future linear colliders. The main topics of this meeting are structure design and associated test programs. The discussions aim to establish a better understanding of the frequency scaling of the limiting gradient, as well as its dependence on material, surface preparation, pulsed heating, etc. To this end, the meeting will allot a reasonable share of time for discussions on the RF breakdown phenomenon from both theoretical and experimental standpoints. Test facilities and the collaborative development of such facilities around the world will be discussed. We will also attempt at this meeting to gain perspective on the ultimate gradient reach. Recent developments will be discussed with the goal of firmly establishing the gradient reach of these technologies and furthering their practical application to specific accelerator designs.
Participants
  • Alexej Grudiev
  • Atsushi Enomoto
  • Chris Adolphsen
  • Eiji Tanabe
  • Franck Peauger
  • Fumito SAKAMOTO
  • Germana Riddone
  • Hirofumi Hanaki
  • Hiroshi Kawamata
  • Igor SYRATCHEV
  • Junichi HIRAYANAGI
  • Juwen Wang
  • Karl-Martin SCHIRM 
  • Kazue Yokoyama
  • Kazuhiko Saito
  • Kazuhiro ENAMI
  • Kazuhiro Ono
  • Kazuo Sugaya
  • Kazutaka Hayashi
  • Kenji Ueno
  • Koichi Kanno
  • Koji Takata
  • Komin Kudo 
  • Lisa Laurent
  • Mamoru Watanabe
  • Mari van der Linden
  • Masatoshi Yoshida
  • Megumi Niigaki
  • Mitsuhiro Yoshida
  • Mitsuo Akemoto
  • Nobu Toge
  • Nobuteru HITOMI
  • Noriyosu Hayashizaki
  • Osamu Yushiro
  • Riccardo Zennaro
  • Richard Zoetewey
  • Risto Nousiainen
  • Roger Jones
  • Saburou TSUBOKAWA
  • Sakae Saito
  • Sami Tantawi
  • Sergio Calatroni
  • Seygey Kazakov
  • Shigeki FUKUDA
  • Shuji Matsumoto
  • Shusaku HIRAI
  • Steffen Doebert
  • Takamichi Watanuki
  • Takuya NATSUI
  • Tetsuji Hara
  • Tetsuo ABE
  • Tetsuo Shidara
  • Tomohiko YAMAMOTO
  • Toshikazu TAKATOMI
  • Toshiyasu Higo
  • Valery Dolgashev
  • Walter WUENSCH
  • Yasuchika Yamamoto
  • Yasuo Higashi
  • Yoshiaki Asano
  • Yoshihiro TANIGUCHI
  • Yoshisato Funahashi
  • Yuichi Watanabe
  • Yukihide KAMIYA
  • Yusuke Kawane
    • Registration Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • Global scope Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 1
        Opening Address
        Speaker: Prof. Yukihide kamiya (KEK)
        Slides
      • 2
        CLIC rf structure development program overview
        Speaker: Dr Walter WUENSCH (CERN)
        Slides
      • 3
        Progress in High Gradient Research for Future Colliders In The US
        Speaker: Prof. Sami Tantawi (SLAC)
        Slides
      • 4
        X-band high gradient activities at KEK
        Speaker: Toshiyasu Higo (KEK)
        Slides
      • 5
        Announcement
        Speaker: Dr Shuji Matsumoto (KEK)
        Slides
    • 10:30
      coffee break Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • Structure design (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 6
        The nominal CLIC accelerating structure: CLIC_G
        Speaker: Alexej Grudiev (CERN)
        Slides
      • 7
        Test Accelerating Structures: designs, objectives and critical issues
        Speaker: Riccardo Zennaro (CERN)
        Slides
      • 8
        Introduction to the PETS design and testing program
        Speaker: Igor SYRATCHEV (CERN)
        Slides
    • 11:45
      Lunch KEK Cafeteria

      KEK Cafeteria

      KEK

      Tsukuba, Japan
    • Exibition Time Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • Maker exibition Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • Structure design (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 9
        Damping and detuning the wake-field in CLIC X-band structures
        Speaker: Dr Roger Jones (University of Manchester)
        Slides
      • 10
        Development of single-cell accelerating structures
        Speaker: Dr Valery Dolgashev (SLAC)
        Slides
      • 11
        Discussion on design
        Speaker: Toshiyasu Higo (KEK)
        Slides
    • Structure fabrication (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 16:15
      Coffee break Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • Structure fabrication (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Germana Riddone (CERN), Yasuo Higashi (KEK)
      • 16
        Disk-damped versus quadrant-damped from engineering view point
        Speaker: Yasuo Higashi (KEK)
        Slides
      • 17
        Comparative analysis of disk and quadrant manufacture
        Speaker: Dr germana riddone (CERN)
        Slides
      • 18
        Manufacturing Experinece with Acceleration structures
        Speaker: Richard Zoetewey (VDL)
        Slides
      • 19
        Brain stroming on fabrication issues
        Speaker: Yasuo Higashi (KEK)
        Slides
    • 08:30
      Morning coffee Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • High gradient experiment (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 20
        Review of NLC/GLC Structure Results
        Speaker: Chris Adolphsen (SLAC)
        Slides
      • 21
        Review of Structure Results at NLCTA Post NLC/GLC
        Speaker: Chris Adolphsen (SLAC)
        Slides
      • 22
        Recent 30 GHz results
        Speaker: Steffen Doebert (CERN)
        Slides
      • 23
        High gradient study result of T18_VG2.4_Disk
        Speaker: Steffen Doebert (CERN)
        Slides
    • 10:30
      Coffee break Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • High gradient experiment (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Lisa Laurent (SLAC), Shuji Matsumoto (KEK)
      • 24
        Comprehensive Analysis of rf Test Results
        Speaker: Alexej Grudiev (CERN)
        Slides
      • 25
        Comparative analysis of OFE, CuZr: breakdown and pulsed surface heating
        Speaker: Mr Sergio Calatroni (CERN)
        Slides
      • 26
        Summary and discussion of present status of high gradient performance
        Speaker: Toshiyasu Higo (KEK)
    • 11:45
      Lunch KEK Cafeteria

      KEK Cafeteria

      KEK

      Tsukuba, Japan
    • Tour to laboratories and workshops Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 27
        Nextef high power establishment
        Speaker: Dr Shuji Matsumoto (KEK)
        Slides
      • 28
        Nextef high gradient experiment status
        Speaker: Toshiyasu Higo (KEK)
        Slides
      • 29
        Explanation of tour
        Speaker: Dr Shuji Matsumoto (KEK)
        Slides
      • 30
        Meeting picture
        Speaker: Nobu Toge (KEK)
        pictures
      • 31
        Guided tour
        Speakers: Kazue Yokoyama (KEK), Kenji Ueno (KEK), Dr Shuji Matsumoto (KEK), Yasuo Higashi (KEK)
    • 16:10
      coffee break Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • High gradient experiment (3) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 32
        Copper treatment for single-cell standing-wave structure
        Speaker: Yasuo Higashi (KEK)
        Slides
      • 33
        Status of tests of single cell accelerating structures
        Speaker: Dr Valery Dolgashev (SLAC)
        Slides
      • 34
        Narrow waveguide experiment
        Speaker: Kazue Yokoyama (KEK)
        Slides
      • 35
        Pulsed heating experiments
        Speaker: Dr Lisa Laurent (SLAC)
        Slides
      • 36
        Discussion toward ultimate gradient
    • 18:40
      Banquet Sansui Tei

      Sansui Tei

      KEK

      Tsukuba, Japan
    • 08:30
      Morning coffee Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • High power test system (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Kazue Yokoyama (KEK), Shigeki Fukuda (KEK)
      • 37
        Planned program on crab cavity for CLIC
        Speaker: Dr Roger Jones (University of Manchester)
        Slides
      • 38
        Two beam test stand
        Speaker: Igor SYRATCHEV (CERN)
        Slides
      • 39
        Plans for the CERN klystron based test stand
        Speaker: Karl-Martin Schirm (CERN)
        Slides
      • 40
        Status of ASTA, Two-Pack system, and RF components Developments
        Speaker: Prof. Sami Tantawi (SLAC)
        Slides
    • 10:30
      Coffee break Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • High power test system (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Kazue Yokoyama (KEK), Shigeki Fukuda (KEK)
    • 11:45
      Lunch KEK Cafeteria

      KEK Cafeteria

      KEK

      Tsukuba, Japan
    • High gradient strategy Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Juwen Wang (SLAC), Kazue Yokoyama (KEK)
      • 43
        Testing program & milestones for CLIC
        Speaker: Steffen Doebert (CERN)
        Slides
      • 44
        Strategy for high gradient
        Discussion on Ultimate gradient goal and feasible gradient goal Parametrization Collaboration
        Speakers: Prof. Sami Tantawi (SLAC), Toshiyasu Higo (KEK), Dr Walter WUENSCH (CERN)
        Slides
    • Summary and closing Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Juwen Wang (SLAC), Kazue Yokoyama (KEK)
      • 45
        Summary
        Speaker: Toshiyasu Higo (KEK)
        Slides
      • 46
        Closing remark
        Speaker: Prof. Atsushi Enomoto (KEK)
        Slides