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Basic System
Characteristics
•
Strong magnetic fields would interfere with the operation of
the linear accelerator if not properly shielded
•
Can induce undesired Lorentz forces on moving charged
particles (in the accelerator, magnetron, or in current
carrying wires)
•
Achieved by numerically solving Poisson’s equation for the
magnetic potential to optimize the shields.
•
The magnetron, port circulator, and gun driver are able to
operate in magnetic fields of < 100 Gauss
•
The linear accelerator needs to have an electron path from
the electron gun to near the target at less than <2 Gauss
Slide content courtesy of Maria Bellon of ViewRay, Inc.