2017_IGRT course book

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.

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