Speaker
Description
The Alvarez-type drift-tube LINAC (DTL) at GSI presented here accelerates intense heavy-ion beams with A/q ≤ 8.5 from 1.4 to 11.4 MeV/u. It replaces a DTL being more than 45 years old, in order to satisfy the requirements of future FAIR operation. The 108.408 MHz Alvarez DTL design has been finalized since 2021, and all tank sections for the 55 m long post-stripper injector have been manufactured. Advanced copper-plating procedures had to be developed for the 2 m long and 2 m diameter tank sections as well as for the drift tubes. These two different plating processes are now successfully applied in series production, ensuring uniform layer quality and low RF-critical surface roughness. The first five of 25 tank sections and over 20 drift tubes have been plated to specification, confirming production stability. The first batch of drift tubes with internal pulsed quadrupoles has undergone magnetic acceptance measurements, to confirm compliance with the field-quality and gradient requirements. This contribution reports the current project status, highlights the assembly of the drift tubes and the electrical connection of the internal quadrupoles.
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