Beamloading compensation of the rf system for the storage ring of the advanced photon source (APS)

Conference · Mon Oct 10 04:00:00 EDT 1994 · AIP Conference Proceedings (American Institute of Physics); (United States)

DOI:https://doi.org/10.1063/1.46983· OSTI ID:6877472

Bridges, J; Stepp, J ^[1]

---

1. Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, Illinois 60439 (United States)

A brief overview of the rf system is given. Design and operating parameters for the klystron amplifiers powering the single cell cavities are described with operating parameters for various positron beam intensities and for optimization of the feedback loops. Klystron efficiencies are low except in saturated operation, but any feedback loop around the klystron requires at least some klystron gain. The gain in the amplitude feedback loop must be adjusted to compensate for saturation. The operating point of the klystron may be dynamically adjusted through a pre-programmed computer or dedicated local processor. Feed forward techniques may be used to alter the program based on beam intensity over the ten-hour storage cycle, using a new digitizer module from Hewlett-Packard. Reduction of the cavity impedance for multi-bunch operation is also described.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6877472
• Report Number(s): CONF-9310204--
• Conference Information: Journal Name: AIP Conference Proceedings (American Institute of Physics); (United States) Journal Volume: 319:1
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430100 -- Particle Accelerators-- Design
Development
& Operation
430400* -- Particle Accelerators-- Storage Rings
ADVANCED PHOTON SOURCE
BEAM OPTICS
CAVITY RESONATORS
DESIGN
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
KLYSTRONS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
RADIATION SOURCES
RESONATORS
RF SYSTEMS
STORAGE RINGS
SYNCHROTRON RADIATION SOURCES