2021-02-23 06:23 |
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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2021-02-20 06:37 |
Incoherent electron cloud effects in the Large Hadron Collider
/ Paraschou, K (CERN ; Aristotle U., Thessaloniki) ; Iadarola, G (CERN)
During the operation of the Large Hadron Collider in 2018, the majority of physics data was collected with a beam energy of 6.5 TeV, a bunch spacing of 25 ns and with β-functions in the high luminosity interaction points equal to 30 cm. In this configuration, it was found through several experimental measurements that electron cloud induces a significant degradation of the beam lifetime. [...]
2020 - 7 p.
- Published in : 10.23732/CYRCP-2020-009.249
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.249-255 (CERN-2020-009)
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2021-02-20 06:37 |
Mitigation of the impedance-related collective effects in FCC-ee
/ Zobov, Mikhail (Frascati) ; Belli, E (CERN) ; Kersevan, Roberto (CERN) ; Novokhatski, A (SLAC) ; Zadeh, S G (Rostock U.) ; Migliorati, Mauro (Rome U.)
In order to achieve a high luminosity in the electron-positron Future Circular Collider (FCC-ee), very intense multi-bunch beams with low emittances are accumulated in two separate rings and collide in two interaction regions exploiting the crab waist collision scheme. In order to preserve beam quality and to avoid collider performance degradation a careful study of beam collective effects is required. [...]
2020 - 7 p.
- Published in : 10.23732/CYRCP-2020-009.279
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.279-285 (CERN-2020-009)
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2021-02-20 06:37 |
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2021-02-20 06:37 |
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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2021-02-20 06:37 |
Space charge effects on Landau damping from octupoles
/ Kornilov, V (Darmstadt, GSI) ; Boine-Frankenheim, O (Darmstadt, GSI)
Octupole magnets are the cornerstone of the collective instability mitigation in many hadron synchrotrons, including the future SIS100 synchrotron of the FAIR project. The betatron tune shifts, and the tune spread, linearly increase with the octupole magnet current, and enhance Landau damping. [...]
2020 - 5 p.
- Published in : 10.23732/CYRCP-2020-009.237
Fulltext: PDF;
In : ICFA mini-Workshop on Mitigation of Coherent Beam Instabilities in Particle Accelerators (MCBI 2019), Zermatt, Switzerland, 23 - 27 Sep 2019, pp.237-241 (CERN-2020-009)
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2021-02-20 06:37 |
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2021-02-20 06:37 |
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2021-02-20 06:37 |
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2021-02-20 06:37 |
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