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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 2: RF, Resonators and Applications I

AKBP 2.7: Talk

Monday, March 14, 2016, 15:30–15:45, S1/05 24

A new MTCA.4 based digital LLRF system for the GSI UNILAC — •Jens Zappai, Bernhard Schlitt, Alexander Schnase, and Gerald Schreiber — GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt

The heavy ion linear accelerator UNILAC served for over 40 years as workhorse for nuclear physics experiments at GSI and as injector to the SIS18 synchrotron. Within the scope of the FAIR project it will also act as injector with increased requirements in beam current and beam quality. To meet these requirements and to ensure reliability for the future, a new digital low level RF system is under development. The spectrum of accelerated ions from hydrogen to uranium results in a huge dynamic range in amplitude, duty cycle and beamloading, especially in respect of the 50 Hz mixed mode. To account for the individual demands of the accelerator and to combine these with the advantages of a commercial-off-the-shelf system like longterm availability and state-of-the-art technology, the new LLRF system will be based on the modular MicroTCA.4 standard. Design and current status of development will be presented.