Synchrotron power cycling apparatus and method of use thereof
First Claim
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1. A method for use of a charged particle accelerator, comprising the steps of:
- providing a synchrotron;
applying a first acceleration voltage to an inductor via an electrical circuit during an acceleration period of said synchrotron, said inductor configured to generate a magnetic field through a portion of said synchrotron;
opening a first switch in said electrical circuit to add a first resistor to said electrical circuit during a recovery time period after said acceleration period, wherein said first resistor results in a decrease of said voltage to said inductor; and
opening a second switch in said electrical circuit to add a second resistor to said electrical circuit during a recovery time period after said step of opening said first switch, wherein said second resistor results in a decrease of said voltage to said inductor.
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Abstract
The invention comprises a charged particle cancer therapy system or synchrotron system using one or more switches to introduce a corresponding one or more resistors into a circuit linking a power supply to a magnet or an inductor during an applied power recovery phase between acceleration cycles of the synchrotron, which reduces time of reduction in power from an active applied power to a power suitable for use with a subsequent injection of charged particles into the synchrotron.
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Citations
18 Claims
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1. A method for use of a charged particle accelerator, comprising the steps of:
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providing a synchrotron; applying a first acceleration voltage to an inductor via an electrical circuit during an acceleration period of said synchrotron, said inductor configured to generate a magnetic field through a portion of said synchrotron; opening a first switch in said electrical circuit to add a first resistor to said electrical circuit during a recovery time period after said acceleration period, wherein said first resistor results in a decrease of said voltage to said inductor; and opening a second switch in said electrical circuit to add a second resistor to said electrical circuit during a recovery time period after said step of opening said first switch, wherein said second resistor results in a decrease of said voltage to said inductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. An apparatus, comprising:
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a synchrotron; an inductor wrapped about a portion of said synchrotron; a power supply; and an electric circuit configured to link said power supply to said inductor, said power supply configured to deliver a first voltage at a terminus of an acceleration period to said inductor about said synchrotron, wherein said electric circuit comprises; at least one electric switch alternately configurable in an open position and in a closed position; at least one resistor, said switch configured in said open position to direct current through said resistor during a recovery period following the terminus of the acceleration period, wherein said at least one electric switch comprises;
a first electric switch and a second electric switch, wherein said at least one resistor comprises a first resistor and a second resistor, said first electric switch configured to switch on and off current through said first resistor, said second electric switch configured to switch on and off current through said second resistor. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification