Concept of a Beam Diagnostics System for the Multi-Turn ERL Operation at the S-DALINAC release_qqeamegbyfhufmuej7kxoedkd4

by Manuel Dutine, Michaela Arnold, Thore Bahlo, Ruben Grewe, Lars Jürgensen, Norbert Pietralla, Felix Schließmann, Manuel Steinhorst, Olander, Johan (Ed.), Volker RW Schaa, Andreas Jansson, Shea, Thomas (Ed.)

Published by JACoW Publishing, Geneva, Switzerland.

Volume IBIC2019Sweden (2019)

Abstract

The S-DALINAC* is a thrice-recirculating linear electron accelerator operating in cw-mode at a frequency of 3 GHz. A path-length adjustment system in the second recirculation beam line allows to shift the beam phase by 360° and thus to operate in ERL mode. For the multi-turn ERL operation, the beam will be accelerated twice and subsequently decelerated twice again (not demonstrated yet). For this mode, it is necessary to develop a nondestructive beam diagnostics system in order to measure the beam position, phase and beam current of both, the accelerated and the decelerated beam, simultaneously in the same beamline. 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.
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Date   2019-11-10
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