Feed forward rf control system of the accelerator test facility

Conference · Mon Dec 31 23:00:00 EST 1990

OSTI ID:5153558

Ben-Zvi, I; Xie, Jialin; Zhang, Renshan

We report a scheme to control the amplitude and phase of the rf accelerating field in a klystron driven electron linac. The amplitude and phase distribution within the rf pulse can be controlled to follow specified functions to reduce the energy spread of the electron beam being accelerated. The scheme employs fast beam energy and phase detectors and voltage-controlled electronic attenuator and phase shifter in the amplifier chain. The control voltages of these devices are generated by arbitrary function generators. The function generators' outputs are calculated numerically using an algorithm which takes into consideration the desired target function and the deviation (due to load variations or system parameter drift) from the target function. Results of preliminary tests on producing flat rf power and phase pulses from a high power klystron indicate that amplitude variation of {plus minus}0.2% and phase variation of {plus minus}1{degree} can be readily achieved. 4 refs., 3 figs.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 5153558
• Report Number(s): BNL-46643; CONF-910505--418; ON: DE92001780
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430303* -- Particle Accelerators-- Experimental Facilities & Equipment
ACCELERATORS
BEAMS
COMPUTERIZED CONTROL SYSTEMS
CONTROL SYSTEMS
ELECTRON BEAMS
ELECTRON TUBES
ELECTRONIC EQUIPMENT
EQUIPMENT
FREE ELECTRON LASERS
KLYSTRONS
LASERS
LEPTON BEAMS
LINEAR ACCELERATORS
MICROWAVE EQUIPMENT
MICROWAVE TUBES
ON-LINE CONTROL SYSTEMS
ON-LINE SYSTEMS
PARTICLE BEAMS
RF SYSTEMS