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| URL | https://doi.org/10.18429/JACoW-IBIC2024-WEP40 |
|---|---|
| Title | The design of SILF fast orbit feedback system |
| Authors |
|
| Abstract | The Shenzhen Innovation Light Source Facility (SILF), as a 4th light source, is an accelerator-based multidiscipline user facility planned to be constructed in Shenzhen, Guangdong, China. The accelerator complex is composed of a 200 MeV linac, a booster with ramping energy from 0.2 GeV to 3.0 GeV, and a 3.0 GeV storage ring, and two e-beam transport lines for injection and extraction among accelerators. The circumference of the storage ring is 696 m, which includes 28 hybrid seven-bend achromat (H7BA) lattice periodic units to achieve the emittance below 100 pm·rad. SILF needs to control the beam orbit change within 10% of the cluster size within a certain frequency. In order to meet the beam orbit stability requirements, it is necessary to establish a fast orbit feedback (FOFB) system with field programmable gate arrays (FPGA) to reduce feedback latency and increase bandwidth. The FOFB system adopt 28 sub-stations with the same hardware and software function to obtain bias-data from the beam position monitors (BPMs) data using 2.38Gbps in the SFPs and send correct-data to the fast corrector power supplies using a serial point-to-point link around the storage ring, and each substation share BPMs data with daisy-chained using of 10Gbps in the SFPs. This paper introduces the FOFB system design outline and progress. Some technical plans and schedules are also discussed. |
| Paper | download: WEP40.pdf |
| Cite | BibTeX, LaTeX, Text/Word, RIS, EndNote |
| Conference | Proc. 13th International Beam Instrumentation Conference |
| Series | |
| Location | Beijing |
| Date | 09-13 Sep 2024 |
| Publisher | JACoW Publishing, Geneva, Switzerland |
| Editorial Board | Jianshe Cao (IHEP), Junhui Yue (IHEP), Lin Bian (IHEP), Ivan Andrian (Elettra-Sincrotrone Trieste S.C.p.A.), Volker RW Schaa (GSI), Zhichu Chen (SARI) |
| Online ISBN | 978-3-95450-249-3 |
| Online ISSN | 2673-5350 |
| Received | 28 July 2024 |
| Revised | 11 September 2024 |
| Accepted | 11 September 2024 |
| Issued | 11 December 2024 |
| DOI | 10.18429/JACoW-IBIC2024-WEP40 |
| Pages | 367-369 |
| Copyright | Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |