| Paper |
Title |
Page |
| THPMK012 |
Reduction of Dynamic Multipole Content in Insertion Devices Using Flat Wires |
4313 |
| |
- T.Y. Chung, S.D. Chen, M.-S. Chiu, S.J. Huang, C.-S. Hwang, J.C. Jan, C.Y. Kuo, Y.T. Li, C.Y. Wu
NSRRC, Hsinchu, Taiwan
- C.-S. Hwang
NCTU, Hsinchu, Taiwan
|
|
| |
Multipole errors of an insertion device are generally corrected based on measurements and analysis of the magnetic field integrals. Multipole components in a strong and narrow non-uniform field of an insertion device appear as dynamic multipoles. Flat wires were installed and commissioned to determine if the dynamic multipoles can be eliminated in an APPLE-II type undulator. In this work, we will discuss and compare the reduction of the dynamic multipole content and it's beam dynamics effects with the flat wire through an analysis of field calculations and beam-based measurements in the storage ring.
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2018-THPMK012
|
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |
| THPMK014 |
Quantitative Analysis of Multipole Errors Induced by Mechanical Deformations of an Undulator |
4321 |
| |
- T.Y. Chung, C.H. Chang, C.-S. Hwang
NSRRC, Hsinchu, Taiwan
- H.W. Luo
NTHU, Hsinchu, Taiwan
|
|
| |
To minimize unwanted beam dynamics effects in a storage ring, multipole errors in an undulator are normally reduced by sorting and shimming methods. Nonetheless, an investigation of the error source is worth pursuing and interesting. Our work focuses on multipole errors introduced by mechanical deformations of an APPLE-II type undulator, which undergoes complicated forces during operation. Our results give guidelines for mechanical specifications derived from quantitative analyses.
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2018-THPMK014
|
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |