title: Development of a high efficiency proton source for the Frankfurter-Neutronen-Quelle am Stern-Gerlach-Zentrum.
abstract: A new version of high efficiency proton source is being developed for Frankfurter-Neutronen-Quelle am Stern-Gerlach-Zentrum, a worldwide unique pulsed neutron source. The injector will provide dc proton beam currents of 200 mA at 120 keV with a beam divergence angle of less than 50 mrad. The new design consists of a plasma generator with a multiple filament arrangement and a compact pentode extraction system. The beam will be extracted from a seven hole outlet electrode. Great efforts are made to achieve an adequate operation time (~3 days) of the source as well as to obtain high reliability during that operation period with less than 1 V breakdowns per hour. The following article will present the current status of the proton source development including beam formation simulations with IGUN.
authors.affiliation: Institute of Applied Physics, Johann Wolfgang Goethe-Universität, Frankfurt am Main, Germany. noerenberg@iap.uni-frankfurt.de
authors.forename: R
authors.initials: R
authors.lastname: Nörenberg
authors.forename: U
authors.initials: U
authors.lastname: Ratzinger
authors.forename: J
authors.initials: J
authors.lastname: Sun
authors.forename: K
authors.initials: K
authors.lastname: Volk