RF Control System for CEBAF

Conference · Wed May 01 04:00:00 EDT 1991

DOI:https://doi.org/10.1109/PAC.1991.165016· OSTI ID:954215

Simrock, Stefan

The design goal of 2.5*10^-5 rms energy spread for the CEBAF electron beam demands strict control of the phase and amplitude of the 1.5 GHz accelerating field.To achieve such control in the presence of microphonic excitations, a separate system for each of the 338 superconducting cavities is required.The RF control system employs a heterodyne scheme which allows the use of high precision analog circuits operating at 70 MHz.Presently, the 45 MeV CEBAF injector with 18 superconducting cavities is being commissioned, and this effort provides the first full integrated test in the accelerator tunnel, including cryogenics, RF, beam transport, and beam diagnostics.The RF control system design and objectives are discussed and compared to measured performance during the first commissioning phase.Hardware reliability and operational challenges experienced for RF control are presented.

• Research Organization: Thomas Jefferson Lab National Accelerator Facility
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 954215
• Report Number(s): CEBAF-PR-91-21
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
AMPLITUDES
BEAM TRANSPORT
CAVITIES
CEBAF ACCELERATOR
COMMISSIONING
CONTROL SYSTEMS
CRYOGENICS
DESIGN
ELECTRON BEAMS
PERFORMANCE
RELIABILITY
RF SYSTEMS