TY  - CONF
A1  - Dinter, Hannes
A1  - Droba, Martin
A1  - Lotz, Marcel
A1  - Meusel, Oliver
A1  - Müller, Ilja
A1  - Noll, Daniel
A1  - Ratzinger, Ulrich
A1  - Schulte, Kathrin
A1  - Wagner, Christopher
A1  - Wiesner, Christoph
T1  - Experiments with a fast chopper system for intense ion beams
T2  - Proceedings of IPAC11 Conference, San Sebastián, Spain
N2  - Chopper systems are used to pulse charged particle beams. In most cases, electric deflection systems are used to generate beam pulses of defined lengths and appropriate repetition rates. At high beam intensities, the field distribution of the chopper system needs to be adapted precisely to the beam dynamics in order to avoid aberrations. An additional challenge is a robust design which guarantees reliable operation. For the Frankfurt Neutron Source FRANZ, an E×B chopper system is being developed which combines static magnetic deflection with a pulsed electric field in a Wien filter configuration. It will generate proton pulses with a flat top of 50 ns at a repetition rate of 250 kHz for 120 keV, 200 mA beams. For the electric deflection, pre-experiments with static and pulsed fields were performed using a helium ion beam. In pulsed mode operation, ion beams of different energies were deflected with voltages of up to ±6 kV and the resulting response was measured using a beam current transformer. A comparison between experiments and theoretical calculations as well as numerical simulations are presented.
Y1  - 2011
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/36554
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-365540
UR  - http://accelconf.web.cern.ch/AccelConf/IPAC2011/papers/mops029.pdf
SN  - 978-92-9083-366-6
N1  - Copyright (c) 2011 by IPAC’11/EPS-AG — cc Creative Commons Attribution 3.0 (CC BY 3.0)
IS  - MOPS029
SP  - 664
EP  - 666
ER  -