Abstract
Beam operation of a novel chopper system has started in the low-energy beam transport (LEBT) section of the accelerator-driven neutron source FRANZ. The chopper is designed for low-energy high-perveance beams and high repetition rates, and will finally operate with 120 keV protons. It combines a static magnetic deflection field with a pulsed electric compensation field in a Wien filter-type configuration. The chopper was designed, manufactured and successfully commissioned at the required repetition rate of 257 kHz using a 14 keV helium beam with up to 3.5 mA of beam current. Beam pulses with rise times of , flat-top lengths of to and full width at half maximum (FWHM) between and were experimentally achieved.
7 More- Received 4 September 2015
DOI:https://doi.org/10.1103/PhysRevAccelBeams.20.020101
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Published by the American Physical Society
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IPAC 2014 Conference Edition
A collection of articles that expand upon original research presented at the 2014 International Particle Accelerator Conference (June 15-20, 2014, Dresden, Germany).