Abstract One key challenge in this project is the design and production of four water-cooled stems with drift tubes for a buncher running at CW operation with RF power levels up to 24 kW. The cylindrical cavity has only a length of 540 mm and a diameter of 614 mm. This paper will discuss the approach of technical design and the production of the drift tubes performed as 3D printing.
Hoeltermann et al. (Sun,) studied this question.