Commissioning of FPGA-based Transverse and Longitudinal Bunch-by-Bunch Feedback System for the TLS
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)
- JASRI/SPring-8, Hyogo (Japan)
- Paul Scherrer Institute, CH-5232 Villigen PSI (Switzerland)
Multi-bunch instabilities deteriorate beam quality, increasing beam emittance, or even causing beam loss in the synchrotron light source. The feedback system is essential to suppress multi-bunch instabilities caused by the impedances of beam ducts, and trapped ions. A new FPGA based transverse and longitudinal bunch-by-bunch feedback system have been commissioned at the Taiwan Light Source recently, A single feedback loop is used to simultaneously suppress the horizontal and the vertical multi-bunch instabilities. Longitudinal instabilities caused by cavity-like structures are suppressed by the longitudinal feedback loop. The same FPGA processor is employed in the transverse feedback and the longitudinal feedback system respectively. Diagnostic memory is included in the system to capture the bunch oscillation signal, which supports various studies.
- OSTI ID:
- 20894913
- Journal Information:
- AIP Conference Proceedings, Vol. 868, Issue 1; Conference: 12. beam instrumentation workshop, Batavia, IL (United States), 1-4 May 2006; Other Information: DOI: 10.1063/1.2401403; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
Similar Records
New Transverse Bunch-by-Bunch Feedback System at TLS
Observation, control and modal analysis of longitudinal coupled-bunch instabilities in the ALS via a digital feedback system