Abstract
A field-programmable gate array (FPGA)-based transverse feedback damper system was implemented in the Spallation Neutron Source (SNS) accumulator ring with the intention to stabilize the electron-proton (e-p) instability in the frequency range of 1-300 MHz. The transverse feedback damper could also be used as a diagnostic tool by measuring the beam transfer function (BTF). An analysis of the BTF measurements provides the stability diagram for the production beam at SNS. This paper describes the feedback damper system and its setup as the BTF diagnostic tool. Experimental BTF results are presented and beam stability is analyzed by use of the BTF measurements for the SNS accumulator ring.
| Original language | English |
|---|---|
| Pages (from-to) | 161-167 |
| Number of pages | 7 |
| Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |
| Volume | 788 |
| DOIs | |
| State | Published - Jul 11 2015 |
Funding
The authors are grateful to Dr. Robert Hardin for setting up the BTF measurement and Dr. Viatcheslav Danilov for technical discussions. The authors would also like to sincerely thank A. Webster, C. Peters, J. Bryan and J. Diamond for their technical expertise. Research conducted at ORNL׳s Spallation Neutron Source was sponsored by the Research Accelerator Division, Office of Basic Energy Sciences, US Department of Energy .
| Funders | Funder number |
|---|---|
| US Department of Energy | |
| Basic Energy Sciences |
Keywords
- Beam instrumentation
- Beam stability
- Diagnostics
- Particle accelerators