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1999 Fiscal Year Final Research Report Summary

Study on high-Luminosity Electron-Positron Colliders

Research Project

Project/Area Number 09045040
Research Category

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

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionKEK, High Energy Accelerator Research Organization

Principal Investigator

YOSHIOKA Masakazu  KEK, High Energy Accelerator Research Organization, Accelerator Lab., Professor, 加速器研究施設, 教授 (50107463)

Co-Investigator(Kenkyū-buntansha) SUGAHARA Ryuhei  KEK, High Energy Accelerator Research Organization, Accelerator Lab., Professor, 加速器研究施設, 教授 (20044761)
YOKOYA Kaoru  KEK, High Energy Accelerator Research Organization, Accelerator, Lab., Professor, 加速器研究施設, 教授 (40141973)
KUROKAWA Shin-ichi  KEK, High Energy Accelerator Research Organization, Accelerator Lab., Professor, 加速器研究施設, 教授 (90044776)
MASUZAWA Mika  KEK, High Energy Accelerator Research Organization, Accelerator Lab., Research Associate, 加速器研究施設, 助手 (10290850)
TAKEUCHI Yasunori  KEK, High Energy Accelerator Research Organization, Accelerator Lab., Associate Professor, 加速器研究施設, 助教授 (80179621)
Project Period (FY) 1997 – 1999
KeywordsPhai factory / Tau Charm factory / head-tail effect / beam-beam collisions / flip-flop effect / round-beam collisions / fast-ion instability / KEKB
Research Abstract

Collaboration on Electron-Positron Colliders went on between Budker Institute of Nuclear Physics (BINP) and High Energy Accelerator Research Organization (KEK) for three years from JFY1997 to JFY1999. BINP has been working on colliders from the very early days of this type machines and is considering to construct Phai and TauCharm factories for their future projects. KEK has completed the construction of KEKB, an asymmetric-energy B-factory, in 1998. The collaboration between the two major laboratories in the field of electron-positron colliders has been beneficial to both parties.
(1) Construction of 900 horizontal steering magnets for KEKB by BINP - KEKB needs high-quality steering magnets and BINP constructed them with a satisfactory quality.
(2) Theoretical study on beam-beam interactions and study on round-beam collision at VEPP-2M at BINP - instabilities due to head-tail effect at beam-beam collision, emittance growth due to beam-beam collision, and dependence of the flip-flop effect on the aspect ratio of beams at collision were theoretically studied. Possible experiment of round-beam collisions at VEPP-2M was discussed between KEK and BINP.
(3) Theoretical study on fast-ion instability - It was shown theoretically that the fast-ion instability might be suppressed due to tune variation along a bunch train.
(4) commissioning of KEKB - BINP researchers participated in KEKB commissioning. KEKB is now supplying beams to physics experiment and its luminosity has surpassed 10ィイD133ィエD1cmィイD3-2(/)sィエD3ィイD1-1ィエD1.

  • Research Products

    (20 results)

All Other

All Publications (20 results)

  • [Publications] M. Masuzawa, et. al: "Experience of Mass Scale Production of KEKB-Factoy Correction Magnets"Proceedings of the HEACC'98. (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] D. V. Pestrikov: "National BMS Damping of the Fast Ion Instability"Physical Review Special Topics-Accelerators and Beams. Vol. 2. (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] D. V. Pestrikov: "Flip-flop effect with Variations of Bunch Aspect Ratios"KEK Preprint. 98-230. (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. Funakoshi, et. al.: "First Beam Collision in the KEKB"Proceedings of PAC'99. 1132-1134 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Koiso, et. al.: "Lattice Analysis of the KEKB Colliding Rings"Proceedings of PAC'99. 2731-2733 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] K. Oide, et. al.: "Commissioning of the KEKB B-Factory"Proceedings of e^+e^- Factories'99. 12-16 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] S. A. Nikitin: "Present Activities at Colliders of BINP(Novosibirsk)"Proceedings of e^+e^- Factories'99. 37-44 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E. A. Perevedentsev: "Effect of Linearized Beam-Beam Interaction on Radiation Emittance"Proceedings of e^+e^- Factories'99. 178-180 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] E. A. Perevedentsev, et. al.: "Round Colliding Beam Activities at BINP"Proceedings of e^+e^- Factories'99. 202-208 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y. Funakoshi, et. al.: "Beam-Beam Performance and Luminosity Optimization at KEKB"Proceedings of e^+e^- Factories'99. 276-282 (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] M.Masuzawa, et. Al.: "Experience of Mass Scale Production of KEKB-Factory Correction Magnets"Proceedings of the XVII International Conference on High Energy Accelerators. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D.V.Pestrikov: "National BMS Damping of the Fast Ion Instability"Physical Review Special Topics-Accelerators and Beams. 2. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] D.V.Pestrikov: "Flip-flop effect with Variations of Bunch Aspect Ratios"KEK Preprint. 98-230. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Funakoshi, et. Al.: "First Beam Collision in the KEKB"Proceedings of the 1999 Particle Accelerator conference (PAC'99). 1132-1134 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H.Koiso, et. Al.: "lattice Analysis of the KEKB Colliding Rings"Proceedings of the 1999 Particle Accelerator conference (PAC'99). 2731-2733 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] K.Oide, et. Al.: "Commissioning of the KEKB B-Factory"Proceedings of International Workshop on Performance Improvement of Electron-Positron Collider Particle Factories (eィイD1+ィエD1eィイD1-ィエD1 Factories'99). 12-16 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.A.Nikitin: "Present Activities at Colliders of BINP (Novosibirsk)"Proceedings of International Workshop on Performance Improvement of Electron-Positron Collider Particle Factories (eィイD1+ィエD1eィイD1-ィエD1 Factories'99). 37-44 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.A.Perevedentsev: "Effect of Linearized Beam-Beam Interaction on Radiation Emittance"Proceedings of International Workshop on Performance Improvement of Electron-Positron Collider Particle Factories (eィイD1+ィエD1eィイD1-ィエD1 Factories'99). 178-180

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] E.A.Perevedentsev: "Round Colliding Beam Activities at BINP"Proceedings of International Workshop on Performance Improvement of Electron-Positron Collider Particle Factories (eィイD1+ィエD1eィイD1-ィエD1 Factories'99). 202-208

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y.Funakoshi, et. Al.: "Beam-Beam Performance and Luminosity Optimization at KEKB"Proceedings of International Workshop on Performance Improvement of Electron-Positron Collider Particle Factories (eィイD1+ィエD1eィイD1-ィエD1 Factories'99). 276-282

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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