Particle accelerator that produces charged particles having variable energies
First Claim
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1. A synchrocyclotron comprising:
- a voltage source to provide a radio frequency (RF) voltage to a cavity to accelerate particles from a particle source;
one or more coils to pass electrical current having one of multiple values and to generate a magnetic field in the cavity corresponding to the electrical current, the magnetic field for causing the particles to move orbitally within the cavity at an energy that corresponds to the electrical current, the magnetic field being at least 4 Tesla;
magnetic pole pieces at least partly defining the cavity, the magnetic pole pieces comprising ferromagnetic material; and
an extraction channel to receive the particles from the cavity and to output the particles, the particles that are output having an energy that corresponds to the electrical current;
wherein the synchrocyclotron is configured to enable setting of the electrical current to one of the multiple values, each of the multiple values corresponding to a different energy at which particles are output from the cavity;
wherein the energy of the particles that are output from the cavity is in a range that is between about 100 MeV and about 300 MeV; and
wherein the voltage source is configured to sweep the RF voltage over different frequency ranges, each different frequency range corresponding to a different energy at which particles are output from the cavity.
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Abstract
An example synchrocyclotron includes the following: a voltage source to provide a radio frequency (RF) voltage to a cavity to accelerate particles from a particle source; a coil to receive a variable electrical current and to generate a magnetic field that is at least 4 Tesla to cause the particles to move orbitally within the cavity; and an extraction channel to receive the accelerated particles and to output the received particles from the cavity. The particles that are output from the cavity have an energy that is variable based at least on the variable electrical current applied to the coil.
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Citations
28 Claims
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1. A synchrocyclotron comprising:
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a voltage source to provide a radio frequency (RF) voltage to a cavity to accelerate particles from a particle source; one or more coils to pass electrical current having one of multiple values and to generate a magnetic field in the cavity corresponding to the electrical current, the magnetic field for causing the particles to move orbitally within the cavity at an energy that corresponds to the electrical current, the magnetic field being at least 4 Tesla; magnetic pole pieces at least partly defining the cavity, the magnetic pole pieces comprising ferromagnetic material; and an extraction channel to receive the particles from the cavity and to output the particles, the particles that are output having an energy that corresponds to the electrical current; wherein the synchrocyclotron is configured to enable setting of the electrical current to one of the multiple values, each of the multiple values corresponding to a different energy at which particles are output from the cavity; wherein the energy of the particles that are output from the cavity is in a range that is between about 100 MeV and about 300 MeV; and wherein the voltage source is configured to sweep the RF voltage over different frequency ranges, each different frequency range corresponding to a different energy at which particles are output from the cavity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A synchrocyclotron comprising:
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a voltage source to provide a radio frequency (RF) voltage to a cavity to accelerate particles from a particle source; coils comprising a first set of coils and a second set of coils, the first set of coils to pass a first portion of an electrical current, and the second set of coils to pass a second portion of the electrical current, the first portion being fixed and the second portion being changeable to take on one of multiple values, the coils to generate a magnetic field to cause the particles to move orbitally within the cavity, the magnetic field being at least 4 Tesla; and an extraction channel to receive the particles from the cavity, and to output the particles from the synchrocyclotron. - View Dependent Claims (26, 27, 28)
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Specification