| Paper | Title | Page |
|---|
| TUP45 | Development of a Digital Self-Excited Loop for Field Control in High-Q Superconducting Cavities | 230 |
| | - J. Delayen, T. Allison, C. Hovater, J. Musson, T. Plawski
Thomas Jefferson National Accelerator Facility
| |
| | Several near-term (e.g. JLab 12 GeV project) or longer
term (e.g. ERLs) projects will involve operation of a large
number of high-Q superconducting cavities where the
Lorentz detuning is much larger that the loaded
bandwidth. Of particular importance in these machines is
the stability with respect to ponderomotive instabilities
and rapid turn-on time and recovery from a trip. Control
systems based on analog self-excited loops have been
successfully used for many decades in small low-velocity
ion linacs that were operating in that regime. We have
developed and tested a control system based on a digital
self-excited loop for the 12 GeV upgrade, which could
also be used in other superconducting accelerators
projects such as the Facility for Rare Isotope Beams. | |