The KONUS IH-DTL proposal for the GSI UNILAC poststripper linac replacement

Motivated by the necessary replacement of the GSI UNILAC poststripper linac, a compact and efficient linac design based on IH-type cavities has been developed. Using KONUS beam dynamics, it was possible to design a linac consisting of only five cavities that can be operated by the existing UNILAC RF...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 874; no. 1; pp. 12047 - 12053
Main Authors Hähnel, H, Ratzinger, U, Tiede, R.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2017
Subjects
Design optimization
Design parameters
Emittance
Error analysis
Magnetic lenses
Misalignment
Physics
Quadrupoles
Tolerances
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Summary:Motivated by the necessary replacement of the GSI UNILAC poststripper linac, a compact and efficient linac design based on IH-type cavities has been developed. Using KONUS beam dynamics, it was possible to design a linac consisting of only five cavities that can be operated by the existing UNILAC RF amplifier structure. The transversal focusing scheme is based on magnetic quadrupole triplet lenses. The optimized design provides full transmission and low emittance growth for the design current of 15 emA U28+, accelerating the beam from 1.4 MeV/u to 11.4 MeV/u. Extensive error studies were performed to define tolerances and verify the stability of the design with respect to misalignment and injection parameters. The design provides a compact and cost effective alternative to a new Alvarez linac. With a total length of just 22.8 meters it will leave room for future energy upgrades in the UNILAC tunnel.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/874/1/012047