ions of 67%. The analyzed U 4+ ion beam after dc postacceleration amounts to 25 mA at 131 kV which is 1.7 times higher than the requested ion beam current at the entrance of the radio frequency quadrupole [...] replacement at the injector, and longer lifetime. more... 2004 American Institute of Physics. [DOI: 10.1063/1.1691516 ] Author: R. Hollinger et al. Comparison of different extraction and acceleration systems for [...] facile handling for beam time operation. more... 2004 American Institute of Physics. [DOI: 10.1063/1.1702123 ] Author: R. Hollinger et al. Charge sensitive evaluated ion and electron energy distributions
of 67 %. The analysed U 4+ ion beam after dc post acceleration amounts to 25 mA at 131 kV which is 1.7 times higher than the requested ion beam current at the entrance of the RFQ. The reduced power density
with a pulse length up to 6 ms and a repetition rate up to 50 s −1 . For the injection into the SIS a pulse length of 300 μs at 0.3 s −1 is required. The transverse acceptance of the RFQ is 138 π mm mrad [...] which can be extracted from a plasma source is for the space charge limited flow proportional to Φ 1.5 / d 2 . With Φ and d denoting the extraction voltage and the width of the extraction gap. One approach [...] the RFQ structure with 2.2 keV/u. The mass-to-charge ratio which is to be accelerated can be between 1 and 65, resulting in a total voltage drop from 2.2 up to 143 kV (extraction and postacceleration voltage)
during melting. For reaching melting temperatures up to 2500°C a power supply is able to deliver up to 1kA (about 6kW) to a small metal container which is connected to the later electrode and melts the supplied
by a video camera outside the vacuum. At that beam line a CAPRICE type ECRIS with 14.5GHz and about 1 T flux density in the extraction was used to deliver different Argon charge states for the measurements