| Paper |
Title |
Page |
| THPC129 |
Coupling Correction in NSLS X-ray Ring
|
3290 |
| |
- M. G. Fedurin, I. Pinayev
BNL, Upton, New York
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| |
In this paper we describe MATLAB script for reduction of the transverse coupling in the NSLS X-ray storage ring. The algorithm is based on varying strength of the skew quadrupoles and observation of the vertical beam size. The details of the iterative procedure are also discussed.
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| THPC131 |
On the Optimal Number of Eigenvectors for Orbit Correction
|
3295 |
| |
- I. Pinayev, M. G. Fedurin
BNL, Upton, Long Island, New York
|
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| |
The singular value decomposition method is widely used for orbit correction in the storage rings. It is a powerful tool for inverting of the usually rectangular response matrices, which usually have rectangular form. Another advantage is flexibility to choose number of eigenvectors for calculation of required strengths of orbit correctors. In particular, by reduction in number of eigenvectors one can average over ensemble noise in the beam position monitors. A theoretical approach as well as experimental results on the NSLS VUV ring are presented.
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