Investigations of the emittance and brightness of ion beams from an electron beam ion source of the Dresden EBIS type.
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 The EBIS-A is the precursor to the Dresden EBIS-SC in which the permanent magnets have been replaced by superconducting solenoids for the use of the source in high-ion-current applications such as heavy-ion cancer therapy.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.
Silze
Alexandra
A
Institut für Angewandte Physik, Technische Universität Dresden, Helmholtzstr. 10, D-01062 Dresden, Germany. a.silze@mailbox.tu-dresden.de
Ritter
Erik
E
Zschornack
Günter
G
Schwan
Andreas
A
Ullmann
Falk
F