Accelerator Seminar

Lars Groening, "Extension of Busch's Theorem to Particle Beams"

Thursday, February 1, 2018 from to (Europe/Berlin)
at KBW lecture hall
In 1926, H. Busch formulated a theorem for one single charged particle moving along a region with longitudinal magnetic field. The theorem relates particle angular momentum to the amount of field lines being enclosed by the particle cyclotron motion. Recently it has been extended to accelerated particle beams. This talk reviews the original theorem and some of its applications as electron cooling and electron confinement. Then it derives its extension to beams and concludes with two applications on emittance manipulations with electron and ion beams.