空間電荷力がビーム不安定性に与える効果についての研究

  • 分類 加速器セミナー
  • 開始 2015/06/05(金)17:00
  • 終了
  • 会場 J−PARC中央制御棟 会議室
  • 講演タイトル
  • 講演者 陳 栄浩 氏 (KEK)
  • 言語 日本語/Japanese
  • 連絡先 内藤 富士雄 (PHS:4174)
  • ウェブサイト
  • 食堂・売店 利用予定なし/0

概要

In this talk. I present a new two particle model for study of beam instabilities in the presence of the space-charge force. It is a simple expansion of the well-known Chao's two particle model for a strong head-tail instability and is still analytically solvable. The 3-dimensional contour plot of the growth rate as a function of the wake field strength and the space-charge tune shift reveals stopband structures. Many simulation results generally indicate that beam instability can be damped by a weak space-charge force. but the beam becomes unstable again when the space charge force is further increased. The new two particle model qualitatively explains these behaviors.