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Würzburg 2018 – scientific programme

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 10: New Accelerator Concepts and Radiofrequency

AKBP 10.4: Talk

Thursday, March 22, 2018, 17:15–17:30, NW-Bau - HS2

Developing an Improved Capture Section and Longitudinal Beam Diagnostics for the S-DALINAC* — •Simon Weih1, Michaela Arnold1, Dmitry Bazyl2, Herbert De Gersem2, Joachim Enders1, and Norbert Pietralla11Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany — 2Institut für Theorie Elektromagnetischer Felder, Technische Universität Darmstadt, Darmstadt, Germany

For an optimized capture of electron bunches in the radio-frequency (RF) field of the injector of the superconducting Darmstadt electron linear accelerator S-DALINAC, a new capture cavity is currently being developed. For installing this cavity, the cryomodule has to be modified. These modifications include adaptions of the tuner frame as well as changes in the position of the RF output coupler. Furthermore, simulations of the longitudinal beam dynamics of the injector were carried out in order to gain a first estimate of the expected beam quality improvements using the new capture structure. Due to the absence of longitudinal diagnostics in the low-energy section so far, an energy-spread measurement setup is currently also under development. This setup is planned to be used for a characterization of the thermionic gun beam, which then will contribute to more accurate simulations for the commissioning phase of the upgraded injector. This contribution will present the cryomodule modifications, some simulation results, and the conception of the energy-spread measurement setup.

*Work supported by DFG through GRK 2128 "Accelence"

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