AUTOMATIC FREQUENCY CONTROL OF ELECTRON LINEAR ACCELERATORS THROUGH THE USE OF DIGITAL TECHNIQUES
A digital system for controlling the mechanical tuning of a microwave cavity oscillator has been designed for use with accelerators. The microwave oscillator is used for driving the klystrons which provide the RF energy to accelerate the electrons to the desired energy. A logical system samples the electron beam pulse, which is at maximum amplitude when the microwave frequency is optimized. If the frequency drifts up or down, the system drives a dc stepping motor to which is geared the oscillator cavity and retunes the osciliator to the correct frequency. An additional feature built into the system provides the correct startup operation (automatic frequency search) when the ac power is applied to the oscillator. To conserve development time and cost, the system design is based mainly on use of standard, commercially available, solid- state logic circuit modules. Modules designed by Lawrence Radiation Laboratory (LRL) are used where simplification is to be gained. The logic circuitry of the system based on these modules is described in detaii. (auth)
- Research Organization:
- California. Univ., Livermore. Lawrence Radiation Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-17-009650
- OSTI ID:
- 4718775
- Report Number(s):
- UCRL-6575
- Country of Publication:
- United States
- Language:
- English
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