Research on Peculiar Beam Dynamics in the Vicinity of Half-Integer Resonance

2008 Fiscal Year Final Research Report

• Project/Area Number: 19540315
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: IEIRI Takao High Energy Accelerator Research Organization, 加速器研究施設, 准教授 (90100809)
• Co-Investigator(Kenkyū-buntansha): IKEDA Hitomi 高エネルギー加速器研究機構, 加速器研究施設, 助教 (80370071)
• Project Period (FY): 2007 – 2008
• Keywords: 加速器 / ビーム物理 / ビーム計測

Research Abstract

クラブ型衝突を世界で最初に実現し、世界最高の衝突性能を誇るKEKB加速器において、バンチ毎のビームパラメータ(ビーム位置、ビーム位相及びベータトロンチューン)を測定し、そのビームダイナミクスを調べた。その結果、ダイナミックビーム・ビーム効果、クラブ型衝突の効果及びその影響などの新しい現象を観測した。さらに、衝突性能を決めるビーム・ビーム力の上限を評価することができた。

Research Products

• [Journal Article] Beam Dynamics Measurements using a Gated Beam-Position Monitor at KEKB (2009)
  • Author(s): T. Ieiri, K. Akai, H. Fukuma and M. Tobiyama
  • Journal Title: Nuclear Inst. and Methods in Physics Research A
  • Peer Reviewed
• [Journal Article] Measurement of Coherent Beam-Beam Tune Shift during Crabbing Collision at KEKB (2009)
  • Author(s): T. Ieiri, Y. Ohnishi, M. Tobiyama, S. Uehara
  • Journal Title: Physical Review Special Topics Accelerator and Beams
  • Peer Reviewed
• [Journal Article] Measurement of Beam-Beam Kick using a Gated Beam-Position Monitor under Crabbing Collision at KEKB (2008)
  • Author(s): T. Ieiri, H. Fukuma, y. Funakoshi, M. Masuzawa, K. Ohmi and M. Tobiyama
  • Journal Title: Proc. of EPAC08 Pages: 1143-1145
• [Journal Article] Orbit Feedback System for Maintaining an Optimum Beam Collision (2007)
  • Author(s): Y. Funakoshi, M. Masuzawa, T. Ieiri, 他7名
  • Journal Title: Physical Review Special Topics Accelerator and Beams 10 Pages: 101001-11
  • Peer Reviewed
• [Journal Article] Measurements of Wake Effects due to Electron Cloud at KEKB (2007)
  • Author(s): T. Ieiri, H. Fukuma, Y. Ohmi, M. Tobiyama
  • Journal Title: Proc. of International Workshop on Electron-Cloud Effects (ECLOUD07) Pages: 152-159
• [Presentation] ゲート制御型ビーム位置モニターとKEKBでの応用 (2008)
  • Author(s): 家入孝夫
  • Organizer: 第5回日本加速器学会
  • Place of Presentation: 東広島市中央公民館
  • Year and Date: 2008-08-07