Technical Design of the MEVVA Ion Source at GSI and Results of a Long Uranium Beam Time Period
作者： F. Heymach , M. Galonska , R. Hollinger , K. D. Leible , P. Spädtke
DOI: 10.1007/978-94-010-0277-6_6
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摘要: The design ion for the linac at GSI is 238U4+. goal to achieve a high current beam fill synchrotron up space charge limit with good reproducibility and availability. An overview of MEVVA source most important operational data technical details uranium operation will be given. Further improvements have been carried out: Meshes stainless steel are used in plasma drift section instead grids earlier experiments (different material, place, shape). With these meshes it was possible increase discharge get better spectra, pulse stability lower noise. To reliability we modified electrode shaping extraction system replaced its tungsten copper alloy by molybdenum. A new glue technique trigger ring has improved reliability. Some results 300 hours time December 2001 UNILAC presented. We give an about transport along low energy beam.
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