Electron accelerators
use magnets to direct and focus the electron beam (e-beam) through
the accelerator. Electromagnets
(EMs) are commonly used for these e-beam optics. However, there are applications where
EMs are not suitable. Examples are
compact bends and chicanes where there is not enough space available for
the EM optics due to the room needed to accommodate their coils.
STI has patented designs
for compact accelerator optics (e.g., dipoles, quadrupoles, sextupoles),
which are based upon permanent magnets (PM). An important capability is their magnetic fields are
adjustable. Motors attached to the
PM optics can remotely tune the field.
Manual adjustment is also available. Another noteworthy feature is the ability to easily adjust
the magnetic centerline position independent of the field strength. Centerline adjustment is typically
difficult to do with EM optics once they are locked into position.
Our PM optics eliminate
the need for high-current power supplies and cooling water, and are
inherently shorter in length than EMs at the same field strengths (see PM-based
optics reprint). We recently
delivered the triplet shown in the upper-right to the Radiological Research Accelerator Facility
(RARAF) at Columbia University.
Examples of other PM-based devices can be found in our Magnetic Devices Brochures. We would be happy to provide a quote for
the most cost-effective PM optic to satisfy your needs.
For more information
contact Stephen C. Gottschalk (see Contacting
Us).
