Subcritical-voltage magnetron rf power source
AssigneeMuons, Inc.
InventorsGrigory M. Kazakevich, Michael L. Neubauer, Valeri A. Lebedev, Vyacheslav P. Yakovlev
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Abstract
A system and method of operating a magnetron power source can achieve a broad range of output power control by operating a magnetron with its cathode voltage lower than that needed for free running oscillations (e.g., below the Kapitsa critical voltage or equivalently below the Hartree voltage) A sufficiently strong injection-locking signal enables the output power to be coherently generated and to be controlled over a broad power range by small changes in the cathode voltage. In one embodiment, the present system and method is used for a practical, single, frequency-locked 2-magnetron system design.
Claims21
1-4. (canceled)
A system for powering an accelerating cavity, comprising:
- a first power source configured to receive an input injection-locking signal and produce an injection-locked first output signal using the input injection-locking signal;
- a second power source coupled to the first power source and configured to receive the injection-locked first output signal and produce a second output signal, the second power source including a high-power magnetron receiving a cathode voltage, the cathode voltage controlling a power of the second output signal;
- and
- a voltage supply system coupled to the second power source and configured to control the power of the second output signal by providing a subcritical feeding voltage as the cathode voltage, the subcritical voltage below a critical voltage needed for self-excitation of the high-power magnetron.
A method for operating a magnetron power source, comprising:
- driving a first power source using an input injection-locking signal;
- producing an injection-locked first output signal by processing the input injection-locking signal using the first power source;
- driving a second power source using the injection-locked first output signal, the second power source including a high-power magnetron receiving a cathode voltage;
- producing a second output signal using the high-power magnetron, the second output signal having a power being a function of the cathode voltage;
- and
- providing a subcritical feeding voltage as the cathode voltage, the subcritical voltage below a critical voltage needed for self-excitation of the high-power magnetron.
Dependencies are inferred from the claim text.