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Investigations on NbTi superconducting racetrack coils under pulsed-current excitations
/ Abusaif, F (KIT, Karlsruhe) ; Bernhard, A (KIT, Karlsruhe) ; Bründermann, E (KIT, Karlsruhe) ; Gancarcik, D (KIT, Karlsruhe ; CERN) ; Glamann, N (KIT, Karlsruhe) ; Grau, A (KIT, Karlsruhe) ; Saez de Jauregui, D (KIT, Karlsruhe) ; Müller, A-S (KIT, Karlsruhe)
One of the key issues in the technology of superconductors is the protection against quenches. When designing a superconductor as a magnet, a coil or even current leads, the design should be made such that the superconductor withstands all operational conditions as fast discharges, pulsed loads or even rapid transient background fields.Computational modeling of pulsed-current characterization in a self-field NbTi racetrack sample coil has been performed using the finite element modelling software Opera as a step towards understanding the thermal and electromagnetic processes during a quench. [...]
2024 - 7 p.
- Published in : J. Phys. : Conf. Ser.: 2687 (2024) , no. 8, pp. 082015
- Published in : JACoW IPAC: 2023 (2023) , pp. WEPM070
Fulltext: PublicationJACoW - PDF; PublicationIOP - PDF;
In : 14th International Particle Accelerator Conference (IPAC 2023), Venice, Italy, 7 - 12 May 2023, pp.082015
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EuPRAXIA – a compact, cost-efficient particle and radiation source
/ Weikum, M K (DESY) ; Akhter, T (INFN, Naples) ; Alesini, P D (LNF, Dafne Light) ; Alexandrova, A S (Cockcroft Inst. Accel. Sci. Tech. ; Liverpool U.) ; Anania, M P (LNF, Dafne Light) ; Andreev, N E (Lebedev Inst. ; Moscow, MIPT) ; Andriyash, I (SOLEIL, Saint-Aubin) ; Aschikhin, A (DESY) ; Assmann, R W (DESY) ; Audet, T (LPGP, Orsay) et al.
Plasma accelerators present one of the most suitable candidates for the development of more compact particle
acceleration technologies, yet they still lag behind radiofrequency (RF)-based devices when it comes to beam quality,
control, stability and power efficiency. The Horizon 2020-funded project EuPRAXIA (“European Plasma Research
Accelerator with eXcellence In Applications”) aims to overcome the first three of these hurdles by developing a
conceptual design for a first international user facility based on plasma acceleration. [...]
2019 - 9 p.
- Published in : AIP Conf. Proc. 2160 (2019) 040012
In : 25th Conference on Application of Accelerators in Research and Industry (CAARI 2018), Grapevine, TX, United States, 12 - 17 Aug 2018, pp.040012
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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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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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5.
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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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EuPRAXIA Conceptual Design Report
/ Assmann, R W (DESY) ; Weikum, M K (DESY) ; Akhter, T (INFN, Naples) ; Alesini, D (Frascati) ; Alexandrova, A S (Cockcroft Inst. Accel. Sci. Tech. ; U. Liverpool (main)) ; Anania, M P (Frascati) ; Andreev, N E (ITAE, Moscow ; Moscow, MIPT) ; Andriyash, I (Weizmann Inst.) ; Artioli, M (ENEA, Bologna) ; Aschikhin, A (DESY) et al.
This report presents the conceptual design of a new European research infrastructure EuPRAXIA. The concept has been established over the last four years in a unique collaboration of 41 laboratories within a Horizon 2020 design study funded by the European Union. [...]
2020 - 610 p.
- Published in : Eur. Phys. J. Spec. Top. 229 (2020) 3675-4284
- Published in : Eur. Phys. J. Spec. Top. 229 (2020) 11-31
Fulltext from Publisher: PDF;
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Status of the Horizon 2020 EuPRAXIA conceptual design study
/ Weikum, Maria (DESY) ; Akhter, Tahmina (INFN, Naples ; U. Naples (main)) ; Alesini, David (Frascati) ; Alexandrova, Alexandra (U. Liverpool (main) ; Cockcroft Inst. Accel. Sci. Tech.) ; Anania, Maria Pia (Frascati) ; Andreev, Nikolay (Moscow, Inst. High Temp. ; Moscow, MIPT) ; Andriyash, Igor (Weizmann Inst.) ; Aschikhin, Alexander (DESY) ; Aßmann, Ralph (DESY) ; Audet, Thomas (LPGP, Orsay) et al.
The Horizon 2020 Project EuPRAXIA (European Plasma Research Accelerator with eXcellence In Applications) is producing a conceptual design report for a highly compact and cost-effective European facility with multi-GeV electron beams accelerated using plasmas. EuPRAXIA will be set up as a distributed Open Innovation platform with two construction sites, one with a focus on beam-driven plasma acceleration (PWFA) and another site with a focus on laser-driven plasma acceleration (LWFA). [...]
CERN-ACC-2019-225.-
2019 - 5 p.
- Published in : 10.18429/JACoW-IPAC2019-THPGW026
Preprint: PDF;
In : 10th International Particle Accelerator Conference, Melbourne, Australia, 19 - 24 May 2019, pp.THPGW026
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Commissioning Status of FLUTE
/ Malygin, Anton (KIT, Karlsruhe) ; Bernhard, Axel (KIT, Karlsruhe) ; Bründermann, Erik (KIT, Karlsruhe) ; Böhm, Andreas (KIT, Karlsruhe) ; Funkner, Stefan (KIT, Karlsruhe) ; Križnar, Igor (KIT, Karlsruhe) ; Marsching, Sebastian (KIT, Karlsruhe) ; Mexner, Wolfgang (KIT, Karlsruhe) ; Mochihashi, Akira (KIT, Karlsruhe) ; Müller, Anke-Susanne (KIT, Karlsruhe) et al.
FLUTE (Ferninfrarot Linac- Und Test-Experiment) will be a new compact versatile linear accelerator at the KIT. Its primary goal is to serve as a platform for a variety of accelerator studies as well as to generate strong ultra-short THz pulses for photon science. [...]
2018 - 3 p.
- Published in : 10.18429/JACoW-IPAC2018-THPMF068
External link: Fulltext
In : 9th International Particle Accelerator Conference, Vancouver, Canada, 29 Apr - 4 May 2018, pp.THPMF068
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9.
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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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Publication
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