• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Active Support for Linear Collider

Research Project

Project/Area Number 10554010
Research Category

Grant-in-Aid for Scientific Research (B).

Allocation TypeSingle-year Grants
Section展開研究
Research Field 素粒子・核・宇宙線
Research InstitutionHigh Energy Accelerator Research Organization

Principal Investigator

TAKEDA Shigeru  Accelerator Laboratory, High Energy Accelerator Research Organization Professor, 加速器研究施設, 教授 (00044777)

Co-Investigator(Kenkyū-buntansha) MATSUMOTO Hiroshi  Accelerator Laboratory, High Energy Accelerator Research Organization Assistant Professor, 加速器研究施設, 助教授 (90132688)
TAKEUCHI Yasunori  Accelerator Laboratory, High Energy Accelerator Research Organization Assistant Professor, 加速器研究施設, 助教授 (80179621)
YOSHIOKA Masakazu  Accelerator Laboratory, High Energy Accelerator Research Organization Professor, 加速器研究施設, 教授 (50107463)
NOZAKI Mitsuaki  Faculty of Science, University of Kobe, 理学部, 教授 (10156193)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥7,800,000 (Direct Cost: ¥7,800,000)
Fiscal Year 2000: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1999: ¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1998: ¥3,500,000 (Direct Cost: ¥3,500,000)
Keywordsfine alignment / active support / girder and creep / slow ground motion / coherence of ground motion / ATL model / measurement of fine displacement / camshaft shifter / 微小変位計測制御 / 精密構造体とクリープ / 大型装置の微小クリープ / 地盤の常微動
Research Abstract

The next generation linear colliders should have extremely small emittance in order to achieve sufficiently high luminosity, such as 1×10^<33> to 1×10^<34> cm10^<-2>sec10^<-1>. The very small beam size of less than ten nanometers height at the interaction point is essential, then these machines are very sensitive to the ground motion leading to uncorrelated machine component jitter. Precise alignment of the machine components is essential to prevent emittance dilution. Hardware R&D on the C-band (5712 Mhz) RF-system for the electron/positron linear collider started in 1996 at KEK.The progresses have been reported in the international conferences. The report said the tolerance of the accelerating structure is 30 microns and the tolerance of the focusing elements is 1 micron. In our study, we have designed the girder for the accelerating structures, the active movers which support the girder. In parallel to these design, we have also studied about the ground motion for wide frequency range to obtain the realistic design concept. In order to compensate the ground motion, an active supporting mover was developed using new idea. We have undertaken to test the quality for long term use of the mover. The mover is composed of an air-spring and a Multi-Layer-Rubber-Bearing (MLRB). The air-spring gives smooth and fine control comparing with the mechanical jack. We use MLRB to prevent fast popping motion of the supporting girder induced by earthquake. Detailed designs of the control system for the mover have been done using LON controller. We have made an analysis using the finite element method on the PC concrete girder.

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] S.Takeda,H.Mutsumoto,M.Yoshioka and Y.Takenchi: "Incoherent Ground Motion"Proceedings of EPAC2000.. 2394-2396 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Yamamoto and S.Takeda: "Slow Ground Motion Studies in KEK"Proceedings of the 22^<nd> Advanced ICFA Beam Dynamics Workshop. (Electronic Publication). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Yoshioka,S.Takeda,H.Matsumoto and Y.Yakeuchi: "Design Study of the Facility for the e+e- Linear Collider Based on the Experiences at KEKB"Proceedings of the 25^<th> Linear Accelerator Mceting in Japan. 25. 38-40 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda,H.Matsumoto,M.Yoshioka, et al: "Compensation for Incoherent Ground Motion"Proc.6th International Workshop on Accelerator Alignment. (Electronic Publication). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Yoshioka,H.Matsumoto,S.Takeda, et al: "Development of a Temperature Control System for Large Scale Electron-Positron Colliders"1^<st> Part.Accel.Conf..APAC98, KEK, March, 1998. 260-262 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda,K.Oide,M.Yoshioka et al: "Ground Motion Issue on the Large Accelerator Alignment"1^<st> Part.Accel.Conf..APAC98, KEK, March, 1998. 266-268 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda, H.Matsumoto, M.Yoshioka and Y.Takeuchi: "Incoherent Ground Motion"Proceedinos of EPAC2000. 2394-2396 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] N.Yamamoto and S.Takeda: "Slow Ground Motion Studies in KEK"Proceedings of the 22^<nd> Advanced ICFA Beam Dynamics Workshop Electronic Publication. (CD ROM).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Yoshioka, S.Takeda, H.Matsumoto and Y.Takeuchi: "Design Study of the Facility for the e+e- Linear Collider Based on the Experiences at KEKB"Proceedings of the 25^<th> Linear Accelerator Meeting in Japan. 38-40 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda, H.Matsumoto, M.Yoshioka, et al: "Compensation for Incoherent Ground Motion"Proc.6th International Workshop on Accelerator Alignment, Grenoble, Oct.1999 Electronic Publication. (CD ROM)(KEK Preprint 99-135). (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] M.Yoshioka, H.Matsumoto, S.Takeda, et al: "Development of a Temperature Control System for Large Scale Electron-Positron Colliders"1^<st>Part.Accel.Conf..APAC98' KEK, March, 1998. (KEK Preprint 98-35). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda, K.Oide, M.Yoshioka et al: "Ground Motion Issue on the Large Accelerator Alignment"1^<st> Part.Accel.Conf.., APAC98, KEK, March, 1998. (KEK Preprint 98-34). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda, K.Kudo, A.Akiyama, et al: "Active Mover Using Air-Apring and MLRB"5^<th> IWAA, IWAA97, Argonne, October, 1997. (KEK Preprint 97-186). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] S.Takeda,H.Matsumoto,M.Yoshioka and Y.Takeuchi: "Incoherent Ground Motion"Electronic Publication CD ROM Proceedings of EPAC2000. 2394-2396 (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] M.Yoshioka,S.Takeda,H.Matsumoto and Y.Taketuchi: "Design Study of the Facility for the e+e- Linear Collider Based on the Experiences at KEKB"Proceedings of the 25^<th> Linear Accelerator Meeting in Japan. 38-40 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] N.Yamamoto and S.Takeda: "Slow Ground Motion Studies in KEK"Electronic Publication Proceedings of the 22^<nd> Advanced ICFA Beam Dynamics Workshop. (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] S. TAKEDA, H. MATSUMOTO, M. YOSHIOKA, Y. TAKEUCHI, K. KUDO, T. TSUBOKAWA, M. NOZAKI and K. KAWAGOE: "Compensation for Incoherent Ground Motion"Submitted to the 6th International Workshop on Accelerator Alignment (IWAA'99) ESRF, Grenoble, France, October 18-21, 1999. (未定)(KEK Preprint 99-135 November 1999).

    • Related Report
      1999 Annual Research Report

URL: 

Published: 1998-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi