Interrupted particle source
First Claim
Patent Images
1. A synchrocyclotron comprising:
- magnetic structures to provide a magnetic field to a cavity;
a particle source to provide a plasma column to the cavity, the particle source having a housing to hold the plasma column, the housing being interrupted at an acceleration region to expose the plasma column, wherein the housing is interrupted such that less than a majority of the housing is present at the acceleration region; and
a voltage source to provide a radio frequency (RF) voltage to the cavity to accelerate particles from the plasma column at the acceleration region.
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Abstract
A synchrocyclotron includes magnetic structures to provide a magnetic field to a cavity, a particle source to provide a plasma column to the cavity, where the particle source has a housing to hold the plasma column, and where the housing is interrupted at an acceleration region to expose the plasma column, and a voltage source to provide a radio frequency (RF) voltage to the cavity to accelerate particles from the plasma column at the acceleration region.
525 Citations
43 Claims
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1. A synchrocyclotron comprising:
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magnetic structures to provide a magnetic field to a cavity; a particle source to provide a plasma column to the cavity, the particle source having a housing to hold the plasma column, the housing being interrupted at an acceleration region to expose the plasma column, wherein the housing is interrupted such that less than a majority of the housing is present at the acceleration region; and a voltage source to provide a radio frequency (RF) voltage to the cavity to accelerate particles from the plasma column at the acceleration region. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A synchrocyclotron comprising:
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a tube containing a gas; a first cathode adjacent to a first end of the tube; and a second cathode adjacent to a second end of the tube, the first and second cathodes applying voltage to the tube to form a plasma column from the gas; wherein particles are available to be drawn from the plasma column for acceleration; and a circuit to couple energy from an external radio frequency (RF) field to at least one of the cathodes; wherein the tube is interrupted at a region where the particles are accelerated to expose the plasma column, wherein the tube is interrupted such that less than a majority of the tube is present at the region where the particles are accelerated. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A synchrocyclotron comprising:
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a Penning ion gauge (PIG) source comprising a first tube portion and a second tube portion, the first tube portion and the second tube portion for holding a plasma column that extends across an acceleration region from which particles are accelerated from the plasma column; and a voltage source to provide a voltage at the acceleration region, the voltage for accelerating particles out of the plasma column at the acceleration region; wherein less than a majority of a connection is present between the first tube portion and the second tube portion at the acceleration region. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A particle accelerator comprising:
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a tube containing a gas; a first cathode adjacent to a first end of the tube; a second cathode adjacent to a second end of the tube, the first and second cathodes applying voltage to the tube to form a plasma column from the gas; wherein particles are available to be drawn from the plasma column for acceleration; a circuit to couple energy from an external radio frequency (RF) field to at least one of the cathodes; and magnetic structures to provide a magnetic field that crosses the region where the particles are accelerated, the magnetic field being greater than about 2 Tesla (T); wherein the tube is interrupted at a region where the particles are accelerated to expose the plasma column, and wherein the tube is interrupted such that less than a majority of the tube is present at the region where the particles are accelerated, - View Dependent Claims (34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification