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The objective of the HFM Working Groups is to address precise subjects that intersect with various work packages and research development lines.
These groups serve as arenas for comprehensive technical dialogues and active collaboration.
| Working Group Name | Contact Person | CERN Box Folder | Mattermost Channel | Indico link | E-group* | Description |
| Insulation Working Group | R. Piccin | Link to CERN Box | Mattermost link | Indico link | HFM-Insulation-Working-Group@cern.ch | Insulation systems for LTS and HTS magnets have to fulfill a number of requirements (electrical, mechanical, thermal, radiation-resistance, process ability, etc). The "Insulation Materials" working group brings together materials experts to develop and test various aspects of soft materials (epoxies, polyolefin, waxes, etc) and composites (fibre-reinforced, nanocomposites, etc.). The WGs participants optimize systems and processing techniques for use in specific contexts (high/low radiation, conduction/bath cooled, stress-managed/tightly-wound, high/low prestressed, etc.) and share their respective results and insights. Other topics within the scope of this working group include tribology on coil/structure interfaces (sliding planes) and bonding to structural components. |
| Quench and Analysis of Transients Working group | M. Wozniak | Link to CERN Box | Mattermost link | Indico link | HFM-Quench-and-Analysis-of-Transients-Working-Group@cern.ch | Quench protection is an integral part of magnet design. Numerical tools for the modeling of transient events such as quenches in superconducting magnets are developed in multiple laboratories, with a strong competence pole at CERN TE/MPE. The "Quench and Analysis of Transients" working group strives for a consistent treatment of quench protection across all HFM laboratories, be it by the adoption of shared modeling techniques, shared tools, cross-validation of numerical tools, or services rendered by one laboratory to another as part of the respective magnet-development roadmaps. |
| Common-coils Working Group | D. Araujo | Link to CERN Box | Mattermost link | Indico link | HFM-Common-Coils-Working-Group@cern.ch | Common coils designs for hadron colliders were studied in the US before they were the subject of magnet R&D for FCC-hh and SppC, and in the US-MDP 20-T hybrid study. In the "common coils" working group, we gather actors in ongoing common coils R&D for an open exchange on design challenges, in order to strengthen each of the participating institutes’ efforts. |
| Coil Composite Working Group | A. Haziot | Link to CERN Box | Mattermost link | Indico link | HFM-Coil-Composite-Working-Group@cern.ch | The Nb3Sn coil composite (strands, Rutherford cable, glass fiber, impregnant) is a daunting problem for predictive numerical analysis and magnet design. The "coil composite" working group strives to elaborate a consistent methodology that is based on experimental work and numerical analysis at multiple scales (strands/filaments, cables, cable stacks, coils). We seek to provide a measurement database and numerical models that: a) predict strand performance under stress; b) predict cable performance under stress; c) predict mechanical behavior of stacks/blocks of cables; d) can be efficiently implemented in 2D and 3D models, and that are validated by experiments on all different scales up to the final magnet. The scope of this working group may be extended to HTS coils in the future. |
| HTS Modeling Working Group | B. Auchmann | Link to CERN Box | Mattermost link | Indico link | HFM-HTS-Modeling-Working-Group@cern.ch | ReBCO tape conductor poses substantive challenges to numerical algorithms and tools to accurately capture electromagnetic/thermal transient phenomena such as screening currents, coupling currents, and quenches. Numerical tools are being developed in multiple HFM laboratories and institutes. The "HTS Modeling" working group brings together experts in numerical techniques in order to research stable and efficient algorithms to be implemented in design and analysis tools for HTS magnets. The initial focus of the working group is on electromagnetic and thermal behavior. Mechanical modeling may be treated here or in the "Coil Composite" working group - tbd. |
Researchers who intend to form/modify/close a Working Group should inform the Programme Leaders, respective RD Line coordinators, and the HFM Programme Office: hfm.programme.office@cern.ch
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