WEOB14 　ビームダイナミクス・加速器理論　 8月30日 13号館1326教室 17:10-17:30

電子蓄積リングにおけるポテンシャル井戸効果によるバンチ長の増大

Potential-Well bunch lengthening in electron storage rings

○周 徳民，三塚 岳，石橋 拓弥（高エネ研），Bane Karl（SLAC）

○Demin Zhou, Gaku Mitsuka, Takuya Ishibashi (KEK), Karl Bane (SLAC)

The cubic equation derived by B. Zotter has been popularly used for electron storage rings to describe the scaling law of potential-well bunch lengthening. This equation has also often been used to calculate the effective impedance when the bunch lengthening is measured or simulated. This paper discusses the validity of Zotter’s equation and presents an alternative but self-consistent equation for potential-well bunch lengthening. Its applications to predicting bunch lengthening and extracting effective impedance from bunch length measurements are also addressed.