A Two Particle Model for Study of Effects of Space-Charge Force on Beam Instabilities.

  • 分類 加速器物理セミナー
  • 開始 2015/05/28(木)13:30
  • 終了 2015/05/28(木)14:30
  • 会場 3号館5階会議室
  • 講演タイトル
  • 講演者 Prof. Yong Ho Chin
  • 言語 英語/English
  • 連絡先 周 徳民 (電話: 4932) 大見 和史 (電話: 4413)
  • 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.