6533b7d2fe1ef96bd125eb40
RESEARCH PRODUCT
Characterization and Tuning of Ultra High Gradient Permanent Magnet Quadrupoles
Florian GrünerRaphael WeingartnerUlrich SchrammPeter KunzSebastian RaithWerner LauthDietrich HabsStefan BeckerHartmut BackeMichael BussmannM. El GhazalyMatthias Fuchssubject
Accelerator Physics (physics.acc-ph)electron beamNuclear and High Energy PhysicsPhysics - Instrumentation and DetectorscompactmagneticlensPhysics and Astronomy (miscellaneous)Field (physics)AperturemultipoleFOS: Physical sciencespermanenthalbachx-felNuclear magnetic resonancetuningquadrupolelcsh:Nuclear and particle physics. Atomic energy. RadioactivityQuadrupole magnetMicrotronPhysicsOrder (ring theory)Surfaces and InterfacesInstrumentation and Detectors (physics.ins-det)beam focusingComputational physicsMagnetQuadrupolelcsh:QC770-798Physics::Accelerator PhysicsPhysics - Accelerator PhysicsMultipole expansiondescription
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 components. Consequently, the size of the aperture can be minimized to match the beam size achieving field gradients of up to $500\text{ }\text{ }\mathrm{T}\text{ }{\mathrm{m}}^{\ensuremath{-}1}$ at good imaging quality. The characterization method based on a Hall probe measurement and a Fourier analysis was confirmed using the high quality electron beam at the Mainz Microtron MAMI.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-02-13 |