Darmstadt 2016 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 11: Poster

AKBP 11.1: Poster

Wednesday, March 16, 2016, 18:30–20:30, S1/05 22-24

Upgrade of the UNiversal Linear ACcelerator UNILAC for FAIR — •Lars Groening¹, Sascha Mickat¹, Aleksey Adonin¹, Winfried Barth¹, Markus Baschke², Xiaonan Du¹, Christoph Emanuel Düllmann³, Hendrik Hähnel², Ralph Hollinger¹, Egon Jäger¹, Holger Podlech², Ulrich Ratzinger², Anna Rubin¹, Paul Scharrer³, Bernhard Schlitt¹, Gerald Schreiber¹, Anja Seibel², Rudolf Tiede², Hartmut Vormann¹, Chen Xiao¹, Alexander Yakushev¹, and Chuan Zhang¹ — ¹GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt / Germany — ²Goethe University Frankfurt, D-60438 Frankfurt / Germany — ³Helmholtz-Institut Mainz, D-55099 Mainz / Germany

In order to meet the requirements on beam parameters for the upcoming FAIR facility at GSI, the injector linac UNILAC will be upgraded. The activities comprise development of the sources for stable provision of intense uranium beams at a repetition rate of 2.7 Hz, a revision of the beam dynamics layout of the 120 keV/u RFQ, the replacement of the matching section to the 1.4 MeV/u pre-stripper DTL, and enhancement of the gaseous stripping section efficiency. This section shall also include a round-to-flat emittance adaptor to prepare the beam for injection into the synchrotron SIS18 which has a flat transverse injection acceptance. Finally, the upgrade includes the complete replacement of the 40 year old 11.4 MeV/u Alvarez-type post-stripper DTL with a new DTL, preferably using Alvarez-type cavities with improved beam focusing features, as well as its rf-power alimentations.