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SMuK 2023 – wissenschaftliches Programm

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AKBP: Arbeitskreis Beschleunigerphysik

AKBP 18: Beam Dynamics II

AKBP 18.5: Vortrag

Donnerstag, 23. März 2023, 18:30–18:45, CHE/0184

Turn-by-turn Measurements of the Energy Spread at Negative Momentum Compaction Factor at KARA — •Christian Goffing1, Erik Bründermann1, Michele Caselle1, Stefan Funkner1, Gudrun Niehues1, Marvin-Dennis Noll1, Meghana Patil1, Patrick Schreiber1, Johannes Steinmann1, Anke-Susanne Müller1, Giovanni Paternoster2, Maurizio Boscardin2, and Matteo Centis Vignali21KIT, Karlsruhe, Germany — 2FBK, Trento, Italy

The Karlsruhe Research Accelerator, the storage ring KARA at KIT, allows short electron bunch operation with positive as well as negative momentum compaction factor. For both cases, the beam dynamics are studied. Using the KALYPSO (KArlsruhe Linear arraY detector for MHz rePetition rate SpectrOscopy) linear array, based on TI-LGAD, the horizontal intensity distribution of the emitted visible part of the synchrotron radiation is measured at a 5-degree port of a bending magnet on a turn-by-turn time scale. Because the measurement is located at a dispersive section, the dynamics of the energy spread can be studied by measuring the horizontal bunch profile. The acquisition rate at MHz-frequencies and the low-charge sensitivity of the line camera allow the investigation of the microbunching instability. This contribution presents the results of the bunch profile measurements performed at positive and negative momentum compaction factor.

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