| Title |
3D Numerical Ray Tracing for the APS-Upgrade Storage Ring Vacuum System Design |
| Authors |
- J.A. Carter
ANL, Argonne, Illinois, USA
|
| Abstract |
The APS-Upgrade project will build a diffraction lim-ited storage ring requiring a vacuum system design with small aperture vacuum chambers passing through narrow magnet poles. The small apertures dictate that the walls of the vacuum chambers act as distributed photon ab-sorbers. The vacuum chambers must be designed robustly so a thorough understanding of the synchrotron ray trac-ing with beam missteering is required. A MatLab program has been developed to investigate 3D ray tracing with beam missteering. The program dis-cretizes local phase spaces of deviation possibilities along the beam path in both the horizontal and vertical planes of motion and then projects rays within a 3D mod-el of the vacuum system. The 3D model contains ele-ments in sequence along the beam path which represent both chamber segments and photon absorbers. Ray strikes are evaluated for multiple worst-case criteria such as local power intensity or strike offset from cooling channels. The worst case results are plotted and used as boundary conditions for vacuum chamber ther-mal/structural analyses. The results have also helped inform decisions about practical beam position limits.
|
| Funding |
Argonne National Laboratory's work is supported by the U.S. Department of Energy, Office of Science under contract DE-AC02-06CH11357 |
| Paper |
download THOAMA05.PDF [1.424 MB / 4 pages] |
| Slides |
download THOAMA05_TALK.PDF [6.832 MB] |
| Export |
download ※ BibTeX
※ LaTeX
※ Text/Word
※ RIS
※ EndNote |
| Conference |
MEDSI2018, Paris, France |
| Series |
Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation (10th) |
| Proceedings |
Link to full MEDSI2018 Proccedings |
| Session |
Simulation |
| Date |
28-Jun-18 10:50–14:10 |
| Main Classification |
Simulation |
| Sub Classification |
Thermal |
| Keywords |
vacuum, storage-ring, lattice, photon, radiation |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editors |
Volker RW Schaa (GSI, Darmstadt, Germany); Keihan Tavakoli (SOLEIL, Gif-sur-Yvette, France); Manuel Tilmont (SOLEIL, Gif-sur-Yvette, France) |
| ISBN |
978-3-95450-207-3 |
| Published |
December 2018 |
| Copyright |
|
