Author: Tinschert, K.
Paper Title Page
TUP09 Operation of the PHOENIX V3 ECRIS Applying Double Frequency Heating 94
  • F. Maimone, R. Lang, J. Mäder, P.T. Patchakui, K. Tinschert, D. van Rooyen
    GSI, Darmstadt, Germany
  • J. Angot, L. Bonny, J. Jacob, A. Leduc, P. Sole, T. Thuillier
    LPSC, Grenoble Cedex, France
  PHOENIX V3 is an upgraded version of the V2 ECRIS to be installed at the heavy ion injector at SPIRAL2. The source is under commissioning at LPSC since 2016. One of the main upgrades of the V3 concerns the new microwave injection system including two WR62 waveguide apertures. This new plug having two waveguide ports allows running the ECRIS with the double frequency heating mode by connecting two different high power microwave sources. For the investigation of this plasma feeding method a klystron generator at 18 GHz proving up to 2 kW microwave power was used together with a traveling wave tube amplifier with a 12.75-14.5 GHz bandwidth and 650 W maximum output power. Several experiments were carried out in order to verify the performance with respect to the single frequency operation. Different ion source configurations were investigated and different frequencies and power combinations were analyzed with the aim to maximize the high charge state ion production and to reduce the ion beam instability. The results are reported here.  
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