Sextupole magnet

Sextupole magnets consist of groups of six magnets set out in an arrangement of alternating north and south magnetic poles arranged around an axis. They are used in particle beam focusing in particle accelerators.cite web|url=http://xfelinfo.desy.de/en/lexikon.sextupolmagnet/2/index.html|title=Sextupole magnet|date=NA|publisher=The European X-Ray Laser Project (XFEL)|accessdate=2008-09-17]

The design of sextupoles using electromagnets generally involves six steel pole tips: three opposing magnetic north poles and three opposing magnetic south poles. The steel is magnetised by a large electric current that flows in the coils of wire wrapped around the poles.

extupoles in particle accelerators

At the speeds reached in high energy particle accelerators, magnetic deflection is more powerful than electrostatic, and use of the magnetic term of the Lorentz force:

: $mathbf\{F\}\; =\; q\; (mathbf\{E\}\; +\; mathbf\{v\}\; imes\; mathbf\{B\}),$

is enabled with various magnets that make up 'the lattice' required to bend, steer and focus a charged particle beam. Sextupole magnets are used in these situations, along with other multipole magnets such as quadrupole magnets.

ee also

*Charged particle beam
*Dipole magnet
*Electron optics
*Halbach cylinder
*Quadrupole magnet

References