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
    • 08:30 09:00
      Registration Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 09:00 10:30
      Global scope Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 09:00
        Opening Address 10m
        Speaker: Prof. Yukihide kamiya (KEK)
        Slides
      • 09:10
        CLIC rf structure development program overview 25m
        Speaker: Dr Walter WUENSCH (CERN)
        Slides
      • 09:35
        Progress in High Gradient Research for Future Colliders In The US 25m
        Speaker: Prof. Sami Tantawi (SLAC)
        Slides
      • 10:00
        X-band high gradient activities at KEK 25m
        Speaker: Toshiyasu Higo (KEK)
        Slides
      • 10:25
        Announcement 5m
        Speaker: Dr Shuji Matsumoto (KEK)
        Slides
    • 10:30 10:45
      coffee break 15m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 10:45 11:45
      Structure design (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 10:45
        The nominal CLIC accelerating structure: CLIC_G 20m
        Speaker: Alexej Grudiev (CERN)
        Slides
      • 11:05
        Test Accelerating Structures: designs, objectives and critical issues 20m
        Speaker: Riccardo Zennaro (CERN)
        Slides
      • 11:25
        Introduction to the PETS design and testing program 20m
        Speaker: Igor SYRATCHEV (CERN)
        Slides
    • 11:45 13:00
      Lunch 1h 15m KEK Cafeteria

      KEK Cafeteria

      KEK

      Tsukuba, Japan
    • 13:00 14:00
      Exibition Time Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 13:00 17:00
      Maker exibition Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 14:00 14:55
      Structure design (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 14:00
        Damping and detuning the wake-field in CLIC X-band structures 20m
        Speaker: Dr Roger Jones (University of Manchester)
        Slides
      • 14:20
        Development of single-cell accelerating structures 20m
        Speaker: Dr Valery Dolgashev (SLAC)
        Slides
      • 14:40
        Discussion on design 15m
        Speaker: Toshiyasu Higo (KEK)
        Slides
    • 14:55 16:15
      Structure fabrication (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 16:15 16:30
      Coffee break 15m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 16:30 18:00
      Structure fabrication (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Germana Riddone (CERN), Yasuo Higashi (KEK)
      • 16:30
        Disk-damped versus quadrant-damped from engineering view point 20m
        Speaker: Yasuo Higashi (KEK)
        Slides
      • 16:50
        Comparative analysis of disk and quadrant manufacture 20m
        Speaker: Dr germana riddone (CERN)
        Slides
      • 17:10
        Manufacturing Experinece with Acceleration structures 20m
        Speaker: Richard Zoetewey (VDL)
        Slides
      • 17:30
        Brain stroming on fabrication issues 30m
        Speaker: Yasuo Higashi (KEK)
        Slides
    • 08:30 09:00
      Morning coffee 30m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 09:00 10:30
      High gradient experiment (1) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 09:00
        Review of NLC/GLC Structure Results 20m
        Speaker: Chris Adolphsen (SLAC)
        Slides
      • 09:20
        Review of Structure Results at NLCTA Post NLC/GLC 20m
        Speaker: Chris Adolphsen (SLAC)
        Slides
      • 09:40
        Recent 30 GHz results 20m
        Speaker: Steffen Doebert (CERN)
        Slides
      • 10:00
        High gradient study result of T18_VG2.4_Disk 20m
        Speaker: Steffen Doebert (CERN)
        Slides
    • 10:30 10:45
      Coffee break 15m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 10:45 11:45
      High gradient experiment (2) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Lisa Laurent (SLAC), Shuji Matsumoto (KEK)
      • 10:45
        Comprehensive Analysis of rf Test Results 20m
        Speaker: Alexej Grudiev (CERN)
        Slides
      • 11:05
        Comparative analysis of OFE, CuZr: breakdown and pulsed surface heating 20m
        Speaker: Mr Sergio Calatroni (CERN)
        Slides
      • 11:25
        Summary and discussion of present status of high gradient performance 20m
        Speaker: Toshiyasu Higo (KEK)
    • 11:45 13:15
      Lunch 1h 30m KEK Cafeteria

      KEK Cafeteria

      KEK

      Tsukuba, Japan
    • 13:15 16:10
      Tour to laboratories and workshops Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 13:15
        Nextef high power establishment 20m
        Speaker: Dr Shuji Matsumoto (KEK)
        Slides
      • 13:35
        Nextef high gradient experiment status 20m
        Speaker: Toshiyasu Higo (KEK)
        Slides
      • 13:55
        Explanation of tour 5m
        Speaker: Dr Shuji Matsumoto (KEK)
        Slides
      • 14:00
        Meeting picture 10m
        Speaker: Nobu Toge (KEK)
        pictures
      • 14:10
        Guided tour 2h
        Speakers: Kazue Yokoyama (KEK), Kenji Ueno (KEK), Dr Shuji Matsumoto (KEK), Yasuo Higashi (KEK)
    • 16:10 16:30
      coffee break 20m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 16:30 18:10
      High gradient experiment (3) Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      • 16:30
        Copper treatment for single-cell standing-wave structure 20m
        Speaker: Yasuo Higashi (KEK)
        Slides
      • 16:50
        Status of tests of single cell accelerating structures 20m
        Speaker: Dr Valery Dolgashev (SLAC)
        Slides
      • 17:10
        Narrow waveguide experiment 20m
        Speaker: Kazue Yokoyama (KEK)
        Slides
      • 17:30
        Pulsed heating experiments 20m
        Speaker: Dr Lisa Laurent (SLAC)
        Slides
      • 17:50
        Discussion toward ultimate gradient 20m
    • 18:40 20:40
      Banquet 2h Sansui Tei

      Sansui Tei

      KEK

      Tsukuba, Japan
    • 08:30 09:00
      Morning coffee 30m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 09:00 10:30
      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)
      • 09:00
        Planned program on crab cavity for CLIC 20m
        Speaker: Dr Roger Jones (University of Manchester)
        Slides
      • 09:20
        Two beam test stand 20m
        Speaker: Igor SYRATCHEV (CERN)
        Slides
      • 09:40
        Plans for the CERN klystron based test stand 20m
        Speaker: Karl-Martin Schirm (CERN)
        Slides
      • 10:00
        Status of ASTA, Two-Pack system, and RF components Developments 20m
        Speaker: Prof. Sami Tantawi (SLAC)
        Slides
    • 10:30 10:45
      Coffee break 15m Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
    • 10:45 11:45
      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 13:15
      Lunch 1h 30m KEK Cafeteria

      KEK Cafeteria

      KEK

      Tsukuba, Japan
    • 13:15 14:15
      High gradient strategy Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Juwen Wang (SLAC), Kazue Yokoyama (KEK)
      • 13:15
        Testing program & milestones for CLIC 20m
        Speaker: Steffen Doebert (CERN)
        Slides
      • 13:35
        Strategy for high gradient 40m
        Discussion on Ultimate gradient goal and feasible gradient goal Parametrization Collaboration
        Speakers: Prof. Sami Tantawi (SLAC), Toshiyasu Higo (KEK), Dr Walter WUENSCH (CERN)
        Slides
    • 14:15 15:00
      Summary and closing Building No.4 Seminar hall

      Building No.4 Seminar hall

      KEK

      Tsukuba, Japan
      Conveners: Juwen Wang (SLAC), Kazue Yokoyama (KEK)
      • 14:15
        Summary 30m
        Speaker: Toshiyasu Higo (KEK)
        Slides
      • 14:45
        Closing remark 15m
        Speaker: Prof. Atsushi Enomoto (KEK)
        Slides