7–11 Sept 2025
Teaching Hub 502
Europe/London timezone

Versatile Bunch Length Measurement Setup for Low Bunch Charges at the S-DALINAC

WEPMO01
10 Sept 2025, 16:00
2h
Teaching Hub 502

Teaching Hub 502

The University of Liverpool 160 Mount Pleasant L3 5TR Liverpool
Poster Presentation MC05: Longitudinal Diagnostics and Synchronization WEP

Speaker

Adrian Brauch (Technical University of Darmstadt)

Description

Energy-recovery linacs provide high beam currents with low externally provided RF power compared to conventional linacs while maintaining high beam quality. The S-DALINAC is a multiple recirculating accelerator operating with a frequency of 3 GHz. It can be operated as a multi-turn superconducting energy-recovery linac *. The bunch length is suspected to limit the efficiency of this operation mode. In the past, the bunch length was determined at the S-DALINAC using the RF zero-crossing method. A new setup, enabling bunch length measurements with low bunch charges at various locations of the S-DALINAC, has been developed and commissioned. Light pulses of optical transition radiation are produced by the electron bunches passing an aluminium-coated Kapton screen. Their lengths are measured with a streak camera. An imaging system consisting of multiple mirrors is used to maintain a high temporal resolution for the measurement and to support in protecting the streak camera from damaging radiation. The design and measurement results of the setup will be presented.

Footnotes

  • F. Schliessmann et al., Nat. Phys. 19, 597–602 (2023).

Funding Agency

Supported by the State of Hesse within the Research Cluster Project ELEMENTS (Project ID 500/10.006) and by DFG (GRK 2128 AccelencE and IRTG 2891 Nuclear Photonics).

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Author

Adrian Brauch (Technical University of Darmstadt)

Co-authors

Dominic Schneider (Technical University of Darmstadt) Felix Schliessmann (Technical University of Darmstadt) Joachim Enders (Technical University of Darmstadt) Lars Jürgensen (Technical University of Darmstadt) Manuel Dutine (Technical University of Darmstadt) Michaela Arnold (Technical University of Darmstadt) Norbert Pietralla (Technical University of Darmstadt) Ruben Grewe (Technical University of Darmstadt)

Presentation materials

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