Systematic Studies of the Micro-Bunching Instability at Very Low Bunch Charges
At KARA, the KArlsruhe Research Accelerator of the KIT synchrotron, the so called short bunch operation mode allows the reduction of the bunch length down to a few picoseconds. The micro- bunching instability resulting from the high degree of longitudinal compression leads to fluctuations in the emi...
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| creator | Brosi, Miriam Steinmann, Johannes L Blomley, Edmund Bründermann, Erik Gethmann, Julian Kehrer, Benjamin Yves-Laurent Mathis Papash, Alexander Schedler, Manuel Schönfeldt, Patrik Schuh, Marcel Schwarz, Markus Caselle, Michele Rota, Lorenzo Weber, Marc Kuske, Peter Müller, Anke-Susanne |
| description | At KARA, the KArlsruhe Research Accelerator of the KIT synchrotron, the so called short bunch operation mode allows the reduction of the bunch length down to a few picoseconds. The micro- bunching instability resulting from the high degree of longitudinal compression leads to fluctuations in the emitted THz radiation, referred to as bursting. For extremely compressed bunches at KARA, bursting occurs not only in one but in two different bunch-current ranges that are separated by a stable region. This work presents measurements of the bursting behavior in both regimes. Good agreement is found between data and numerical solutions of the Vlasov-Fokker-Planck equation. |
| doi_str_mv | 10.48550/arxiv.1807.01145 |
| format | Article |
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| subjects | Bunching Bursting Fokker-Planck equation Physics - Accelerator Physics Stability Variations |
| title | Systematic Studies of the Micro-Bunching Instability at Very Low Bunch Charges |
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