Commissioning of the High Current Ion Sources at the New GSI Injector (HSI)
نویسندگان
چکیده
The new high current injector consisting of an RFQ and an IH structure accepts ions with a mass-to-charge ratio m/q up to 65 with a space charge limit of 0.25 emA m/q. Two types of high current ion sources are used to deliver ion beam currents up to the space charge limit of the RFQ. As a source for ions of gaseous elements a multi cusp ion source (MUCIS) [1] was used. Metallic ions were produced by a metal vapor vacuum arc ion source (MEVVA) [2] [3]. A main concern of the sources is the reliability and the stability of the extracted ion beam. In addition the splitting of the total voltage required to achieve the injection energy of 2.2keV/u (extraction voltage and acceleration voltage) was found to have a strong influence on the beam matching.
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