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Transient finite-element simulations of fast-ramping muon-collider magnets
/ Moll, Dominik (Darmstadt, Tech. U.) ; Boattini, Fulvio (CERN) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Christmann, Jan-Magnus (Darmstadt, Tech. U.) ; D'Angelo, Laura (Darmstadt, Tech. U.) ; Bottura, Luca (CERN) ; Breschi, Marco (Bologna U.)
Conceptual studies for a muon collider identify fast-ramping magnets as a major design challenge. Rise rates of more than 1 T/ms are attainable with normal-conducting magnets, incorporating iron yokes to make sure that stored magnetic energies and inductances stay below reasonable thresholds. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) TUPR54
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.TUPR54
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Investigation of the nucleon distribution on the surface of radioactive xenon nuclei using antiprotons
/ Aberle, Oliver (CERN, 1211 Geneva 23, Switzerland) ; Aumann, Tom (Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany) ; Azaryan, Nikolay (CERN, 1211 Geneva 23, Switzerland) ; Bissell, Mark Lloyd (CERN, 1211 Geneva 23, Switzerland) ; Boine-Frankenheim, Oliver (Institut für Teilchenbeschleunigung und elektromagnetische Felder, Technische Universität Darmstadt, 64289 Darmstadt, Germany) ; Bonnes, Uwe (Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany) ; Butin, Francois (CERN, 1211 Geneva 23, Switzerland) ; Chiggiato, Paolo (CERN, 1211 Geneva 23, Switzerland) ; De Gersem, Herbert (Institut für Teilchenbeschleunigung und elektromagnetische Felder, Technische Universität Darmstadt, 64289 Darmstadt, Germany) ; De Oliveira, Rui (CERN, 1211 Geneva 23, Switzerland) et al.
CERN-INTC-2024-055 ; INTC-P-712.
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2024
Full text
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Modelling and simulating accelerator magnets
/ De Gersem, Herbert (speaker)
In this lecture, we show how to set up a finite element model of an accelerator magnet. We discuss the challenges in simulating accelerator magnets and come up with a list of requirements for commercial or freeware simulation tools. [...]
2023 - 3315.
CERN Accelerator School; CAS course on "Normal- and Superconducting Magnets", 19 November - 02 December 2023, St. Pölten, Austria
External links: Talk details; Event details
In : CAS course on "Normal- and Superconducting Magnets", 19 November - 02 December 2023, St. Pölten, Austria
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Magnetic field simulation by finite element methods
/ De Gersem, Herbert (speaker)
Stephan Russenschuck, Maxwell equations in global form, oriented manifolds, Ampere’s law, Faraday’s law, Gauss’ law, conservation of charge. Maxwell equation in local form, Vector fields, application to NC magnets, material relations, boundary and interface conditions, space curves and their applications, CCT magnets, the directional derivative, grad, curl, and div, coordinate-free definition of the differential operators, Maxwell’s house [...]
2023 - 3468.
CERN Accelerator School; CAS course on "Normal- and Superconducting Magnets", 19 November - 02 December 2023, St. Pölten, Austria
External links: Talk details; Event details
In : CAS course on "Normal- and Superconducting Magnets", 19 November - 02 December 2023, St. Pölten, Austria
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Efficient Reduced Magnetic Vector Potential Formulation for the Magnetic Field Simulation of Accelerator Magnets
/ D'Angelo, Laura A.M. (Darmstadt, Tech. U.) ; Moll, Dominik (Darmstadt, Tech. U.) ; Vitrano, Andrea (CERN) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Schnaubelt, Erik (Darmstadt, Tech. U. ; CERN) ; Wozniak, Mariusz (CERN) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Auchmann, Bernhard (PSI, Villigen)
The major advantage of reduced magnetic vector potential formulations (RMVPs) is that complicated coil structures do not need to be resolved by a computational mesh. Instead, they are modeled by thin wires, whose source field is included into the simulation model along Biot-Savart's law. [...]
arXiv:2309.02004.-
2024-03 - 8 p.
- Published in : IEEE Trans. Magn. 60 (2024) 7000808
Fulltext: PDF;
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Hybrid modeling: towards the next level of scientific computing in engineering
/ Kurz, Stefan ; De Gersem, Herbert (Darmstadt, Tech. Hochsch.) ; Galetzka, Armin (Darmstadt, Tech. Hochsch.) ; Klaedtke, Andreas ; Liebsch, Melvin (CERN) ; Loukrezis, Dimitrios (Darmstadt, Tech. Hochsch.) ; Russenschuck, Stephan (CERN) ; Schmidt, Manuel
AbstractThe integration of machine learning (Keplerian paradigm) and more general artificial intelligence technologies with physical modeling based on first principles (Newtonian paradigm) will impact scientific computing in engineering in fundamental ways. Such hybrid models combine first principle-based models with data-based models into a joint architecture. [...]
2022 - 12 p.
- Published in : J. Math. Industry 12 (2022) 8
Fulltext: PDF;
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Inductive Adder Prototype for FCC-hh Injection Kicker System
/ Woog, David (CERN ; Darmstadt, Tech. U.) ; Barnes, Michael (CERN) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Kramer, Thomas (CERN)
The future circular collider (FCC) requires a highly reliable injection kicker system. Present day kicker systems often rely on thyratron-based pulse generators and a pulse forming network or line: the thyratron is susceptible to self-triggering. [...]
JACoW, 2021 - 4 p.
- Published in : JACoW IPAC 2021 (2021) 3494-3497
Fulltext: PDF;
In : 12th International Particle Accelerator Conference (IPAC 2021), Online, 24 - 28 May 2021, pp.3494-3497
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Local field reconstruction from rotating coil measurements in particle accelerator magnets
/ Ion, Ion Gabriel (Darmstadt, Tech. U.) ; Liebsch, Melvin (CERN) ; Simona, Abele (Darmstadt, Tech. U. ; Milan, Polytech.) ; Loukrezis, Dimitrios (Darmstadt, Tech. U.) ; Petrone, Carlo (CERN) ; Russenschuck, Stephan (CERN) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Schöps, Sebastian (Darmstadt, Tech. U.)
In this paper a general approach to reconstruct three dimensional field solutions in particle accelerator magnets from distributed magnetic measurements is presented. To exploit the locality of the measurement operation a special discretization of the Laplace equation is used. [...]
arXiv:2106.15168.-
2021-09-21
- Published in : Nucl. Instrum. Methods Phys. Res., A 1011 (2021) 165580
Fulltext: PDF;
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First Measurements of a New Type of Coreless Cryogenic Current Comparators (4C) for Non-Destructive Intensity Diagnostics of Charged Particles
/ Tympel, Volker (Helmholtz Inst., Jena) ; Anders, Solveig (Inst. Photonic Tech., Jena) ; De Gersem, Herbert (Darmstadt, Tech. U.) ; Golm, Jessica (Jena U.) ; Haider, David (Darmstadt, GSI) ; Kunert, Juergen (Inst. Photonic Tech., Jena) ; Marsic, Nicolas (Darmstadt, Tech. U.) ; Müller, Wolfgang (Darmstadt, Tech. U.) ; Schmelz, Matthias (Inst. Photonic Tech., Jena) ; Schmidl, Frank (Darmstadt, GSI) et al.
The non-destructive and highly sensitive measurement of a charged particle beam is of utmost importance for modern particle accelerator facilities. A Cryogenic Current Comparator (CCC) can be used to measure beam currents in the nA-range. [...]
2019 - 3 p.
- Published in : 10.18429/JACoW-IBIC2019-MOPP008
Fulltext: PDF;
In : 8th International Beam Instrumentation Conference (IBIC 2019), Malmo, Sweden, 8 - 12 Sep 2019, pp.MOPP008
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