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1.
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Status of negative momentum compaction operation at KARA
/ Schreiber, P (KIT, Karlsruhe) ; Boltz, T (KIT, Karlsruhe) ; Brosi, M (KIT, Karlsruhe) ; Haerer, B (KIT, Karlsruhe) ; Mochihashi, A (KIT, Karlsruhe) ; Papash, A I (KIT, Karlsruhe) ; Schuh, M (KIT, Karlsruhe) ; Müller, A -S (KIT, Karlsruhe)
For future synchrotron light sources different operation modes are of interest. Therefore various modes are currently being tested at the Karlsruhe Research Accelerator (KARA) including optics for a negative momentum compaction factor. [...]
2020 - 3 p.
- Published in : 10.23732/CYRCP-2020-009.297
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.297-299 (CERN-2020-009)
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2.
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Feedback design for control of the micro-bunching instability based on reinforcement learning
/ Boltz, T (KIT, Karlsruhe) ; Brosi, M (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Haerer, B (KIT, Karlsruhe) ; Kaiser, P (KIT, Karlsruhe) ; Pohl, C (KIT, Karlsruhe) ; Schreiber, P (KIT, Karlsruhe) ; Yan, M (KIT, Karlsruhe) ; Asfour, T (KIT, Karlsruhe) ; Müller, A -S (KIT, Karlsruhe)
The operation of ring-based synchrotron light sources with short electron bunches increases the emission of coherent synchrotron radiation in the THz frequency range. However, the micro-bunching instability resulting from self-interaction of the bunch with its own radiation field limits stable operation with constant intensity of CSR emission to a particular threshold current. [...]
2020 - 3 p.
- Published in : 10.23732/CYRCP-2020-009.227
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.227-229 (CERN-2020-009)
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3.
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Systematic studies of the microbunching and weak instability at short bunch lengths
/ Brosi, M (KIT, Karlsruhe) ; Blomley, E (KIT, Karlsruhe) ; Boltz, T (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Caselle, M (KIT, Karlsruhe) ; Gethmann, J (KIT, Karlsruhe) ; Kehrer, B (KIT, Karlsruhe) ; Papash, A.I. (KIT, Karlsruhe) ; Rota, L (KIT, Karlsruhe) ; Schönfeldt, P (KIT, Karlsruhe) et al.
At KARA, the Karlsruhe Research Accelerator of the Karlsruhe Institute of Technology synchrotron, the so-called short-bunch operation mode allows the reduction of the bunch length down to a few picoseconds. The microbunching instability resulting from the high degree of longitudinal compression leads to fluctuations in the emitted terahertz radiation. [...]
2020 - 5 p.
- Published in : 10.23732/CYRCP-2020-009.335
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.335 (CERN-2020-009)
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4.
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Diagnostics of longitudinal bunch instabilities at KARA
/ Kehrer, B (KIT, Karlsruhe) ; Brosi, M (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Funkner, S (KIT, Karlsruhe) ; Nasse, M J (KIT, Karlsruhe) ; Niehues, G (KIT, Karlsruhe) ; Patil, M M (KIT, Karlsruhe) ; Steinmann, J L (KIT, Karlsruhe ; Argonne (main)) ; Müller, A S (KIT, Karlsruhe)
KARA, the Karlsruhe Research Accelerator, can be operated in different modes, including a short-bunch mode. During this mode, where the dispersion is stretched in order to reduce the momentum-compaction factor, micro-bunching instability can occur. [...]
2020 - 4 p.
- Published in : 10.23732/CYRCP-2020-009.137
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.137 (CERN-2020-009)
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5.
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Studies of Longitudinal Dynamics in the Micro-Bunching Instability Using Machine Learning
/ Boltz, Tobias (KIT, Karlsruhe) ; Brosi, Miriam (KIT, Karlsruhe) ; Bründermann, Erik (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) ; Schwarz, Markus (CERN) ; Schönfeldt, Patrik (KIT, Karlsruhe) ; Yan, Minjie (KIT, Karlsruhe)
The operation of synchrotron light sources with short electron bunches increases the emitted CSR power in the THz frequency range. However, the spatial compression leads to complex longitudinal dynamics, causing the formation of micro-structures in the longitudinal bunch profiles. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-THPAK030
Fulltext: PDF;
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPAK030
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6.
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Investigating Polarisation and Shape of Beam Microwave Signals at the ANKA Storage Ring
/ Schwarzkopf, J (KIT, Karlsruhe, IPE) ; Brosi, M (KIT, Karlsruhe, IPE) ; Chang, C (KIT, Karlsruhe, IPE) ; Hertle, E (KIT, Karlsruhe, IPE) ; Judin, V (KIT, Karlsruhe, IPE) ; Kehrer, B (KIT, Karlsruhe, IPE) ; Müller, A-S (KIT, Karlsruhe, IPE) ; Schönfeldt, P (KIT, Karlsruhe, IPE) ; Schuh, M (KIT, Karlsruhe, IPE) ; Schütze, P M (KIT, Karlsruhe, IPE) et al.
At the ANKA synchrotron radiation facility measure- ments in the microwave range (10 to 12 GHz) employing a LNB (Low Noise Block), which is the receiving part of a Satellite-TV system, have been carried out. Experiments showedthattheobservedsignaldependsonthelengthofthe electron bunches. [...]
2014
External link: Published version from JaCoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.4090
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