title: Investigations of the emittance and brightness of ion beams from an electron beam ion source of the Dresden EBIS type.
abstract: We have characterized ion beams extracted from the Dresden EBIS-A, a compact room-temperature electron beam ion source (EBIS) with a permanent magnet system for electron beam compression, using a pepper-pot emittance meter. The EBIS-A is the precursor to the Dresden EBIS-SC in which the permanent magnets have been replaced by superconducting solenoids for the use of the source in high-ion-current applications such as heavy-ion cancer therapy. Beam emittance and brightness values were calculated from data sets acquired for a variety of source parameters, in leaky as well as pulsed ion extraction mode. With box shaped pulses of C(4+) ions at an energy of 39 keV root mean square emittances of 1-4 mm mrad and a brightness of 10 nA mm(-2) mrad(-2) were achieved. The results meet the expectations for high quality ion beams generated by an electron beam ion source.
authors.affiliation: Institut für Angewandte Physik, Technische Universität Dresden, Helmholtzstr. 10, D-01062 Dresden, Germany. a.silze@mailbox.tu-dresden.de
authors.forename: Alexandra
authors.initials: A
authors.lastname: Silze
authors.forename: Erik
authors.initials: E
authors.lastname: Ritter
authors.forename: Günter
authors.initials: G
authors.lastname: Zschornack
authors.forename: Andreas
authors.initials: A
authors.lastname: Schwan
authors.forename: Falk
authors.initials: F
authors.lastname: Ullmann