| Paper |
Title |
Page |
| TUPH28 |
Calculation of Orbit Distortions for the APS Upgrade Due to Girder Resonances |
95 |
| |
- J. Nudell, Z. Liu, C.A. Preissner, V. Sajaev
ANL, Argonne, Illinois, USA
|
|
| |
Maintaining sub-micron-scale beam stability for the APS-U Multibend Achromat Lattice places strict requirements on the magnet support system. Historically, magnet vibration requirements have been based on physics simulations which make broad generalizations and assumptions regarding the magnet motion. Magnet support systems have been notoriously difficult to analyze with FEA techniques and as a consequence, these analyses have been underutilized in predicting accelerator performance. The APS has developed a procedure for accurate modeling of magnet support systems. The girder mode shapes are extracted from these analyses and exported to accelerator simulation code elegant to calculate the static beam amplification factor for each mode shape. These amplification factors, along with knowledge of damping coefficients and the character of the tunnel floor motion, may then be used to predict the effect of girder resonances on beam stability and validate the magnet support designs.
|
|
|
Poster TUPH28 [0.848 MB]
|
|
| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-MEDSI2018-TUPH28
|
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
|
| |