Characterization and tuning of ultrahigh gradient permanent magnet quadrupoles
Characterization and tuning of ultrahigh gradient permanent magnet quadrupoles
The application of quadrupole devices with high field gradients and small apertures requires precise control over higher order multipole field components. We present a new scheme for performance control and tuning, which allows the illumination of most of the quadrupole device aperture because of the reduction of higher order field …