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München 2019 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 15: Poster session

AKBP 15.22: Poster

Thursday, March 21, 2019, 16:30–18:00, Durchgangshalle

Concept of a Beam Diagnostics System for the Multi-Turn ERL Operation at the S-DALINAC* — •M. Dutine, M. Arnold, T. Bahlo, R. Grewe, L. Jürgensen, N. Pietralla, F. Schließmann, and M. Steinhorst — Institut für Kernphysik, TU Darmstadt

The S-DALINAC is a thrice-recirculating linear electron accelerator operating in cw-mode at a frequency of 3 GHz. Due to the implementation of a path-length adjustment system capable of a 360° phase shift, it is possible to operate the accelerator in ERL mode. For the multi-turn ERL operation the beam will be accelerated twice and subsequently decelerated twice again. For this mode, a non-destructive beam diagnostics system is necessary in order to measure the beam position and phase of both, the accelerated and the decelerated beam simultaneously in the same beam line. A particular challenge will be the operation at low beam currents of 100 nA, which corresponds to bunch charges of about 30 aC. The conceptional study of a 6 GHz resonant cavity beam position monitor will be presented together with alternative solutions.

*Work supported by DFG through GRK 2128 and BMBF through grant No. 05H18RDRB2.

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