%0 Generic
%A André Anders
%A Ian G Brown
%A R.G MacGill
%D 1996
%T Vacuum-Spark Metal Ion Source Based on a Modified Marx Generator
%2 LBNL-37922
%X <p>The plasma generating parts of ion sources<br />including their power supplies are usually floated to<br />high potential (ion extraction voltage), thus requiring<br />great insulation efforts and high costs for high-energy<br />ion beams. A new concept for pulsed ion sources is<br />presented in which a single power supply is used to<br />simultaneously produce the plasma and high extractor<br />voltage via a modified Marx generator. Proof-ofprinciple<br />experiments have been performed with highcurrent<br />spark discharges in vacuum where multiply<br />charged ions are produced with this Marx-generator<br />based ion source ("Magis"). Using "Magis", it has<br />been demonstrated that pulsed iol) beams of very high<br />energies can be obtained with relatively low voltage.<br />For copper, ion of charge states up to 7+ have been<br />found whose energy was 112 keY for a charging<br />voltage of only 10 kV.</p>