Beam transport system and method, accelerator including beam transport system, and ion source including the accelerator
AssigneeHitachi High-Tech Corporation
InventorsSakiko Ashikaga, Takamichi Aoki, Kazuya Nagashima, Takayoshi Seki, Koichi Miyazaki
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Abstract
A beam transport system for transporting a charged particle beam, includes a magnetic field generation device that is provided in a transport line that transports the charged particle beam and generates a magnetic field parallel to a center orbit of the charged particle beam, and a beam shielding device that is provided in a region through which the charged particle beam in the magnetic field generation device passes, causes a charged particle beam in a predetermined range of the charged particle beam to pass through, and stops other charged particle beams.
Claims9
A beam transport system for transporting a charged particle beam, the beam transport system comprising:
- a magnetic field generation device that is provided in a transport line that transports the charged particle beam and generates a magnetic field parallel to a center orbit of the charged particle beam;
- a beam shielding device, that is provided in a region through which the charged particle beam in the magnetic field generation device passes, is configured to cause a portion of the charged particle beam in a predetermined range of the charged particle beam to pass through, and stop another portion of the charged particle beam;
- and
- a control system configured to adjust an angular momentum of the charged particle beam to ≠0 and adjust the Twiss parameter α to be close to 0 at at-least one point on the central orbit of the charged particle beam in the beam shielding device.
A beam transport method for transporting a charged particle beam by a beam transport system, the beam transport method comprising:
- disposing a collimator in a solenoid electromagnet provided in the middle of a transport line that transports the charged particle beam, and
- setting an angular momentum of the charged particle beam not to be 0 and a Twiss parameter α to be near 0 at at least one point of a center orbit of the charged particle beam in the collimator.
Dependencies are inferred from the claim text.