Effects of Elliptically Polarizing Undulator on Beam Dynamics in PLS-II
S. Shin, D-E. Kim, J-Y. Huang
TL;DR
This study investigates how the intrinsic field transverse roll-off in an elliptically polarizing undulator affects beam dynamics in PLS-II, finding no adverse effects on beam lifetime or injection.
Contribution
It provides the first detailed analysis of non-linear effects caused by the EPU72's field roll-off on beam dynamics in PLS-II.
Findings
EPU72 does not reduce beam lifetime.
EPU72 does not cause injection problems.
The non-linear effects are manageable.
Abstract
The non-linear effects caused by the intrinsic field transverse roll-off in an Elliptically Polarizing Undulator with 72-mm period and maximum peak field of 0.72 T (EPU72) on the dynamics aperture of the Pohang Light Source II (PLS-II) were investigated. A kick map and Frequency map analysis both demonstrated that EPU72 will not reduce the lifetime or cause injection problems in PLS-II.
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