Low-temperature superconducting materials are widely used in high-field magnets, but their behaviour is closely related to the strains they undergo. Consequently, studies on the impact of stress on mechanical structures are essential. The SUPRAMITEX project is participating in this research effort by using the AMITEX-FFTP parallel code developed as part of the SIMU/MATIX project to carry out non-linear mechanical simulations on heterogeneous microstructures. This work has shown the interest of the AMITEX code to simulate the mechanical behaviour of these components, at different scales, for elastic and elasto-plastic behaviours at simulation scales that were previously unattainable.
The MADMAX project, which was launched in November 2016, is led by the Max Planck Institut für Physik in collaboration with several European institutes. The goal of the project is the discovery of axions with a mass of about 100 µeV, potential candidates for dark matter. To detect these axions, it is necessary to develop a specific detector consisting of an electromagnetic signal amplifier and a magnet proportional to the size of the amplifier and delivering a strong magnetic field. In order to validate the innovations in the fabrication of the magnet conductor, its cooling concept and the quench detection, a demonstrator has been designed, fabricated, integrated and tested between March 2020 and August 2021. It is named MACQU for MADMAX Coil for Quench Understanding. The entire design, from the conductor to the support structure, including the MACQU magnet, its thermal shield and the busbars, was carried out at the CEA. The demonstrator, manufactured by the industrial Bilfinger Noell GmbH, arrived in March 2021 and was successfully tested between May 18 and August 27, 2021. The analysis of the data now completed provides the desired answers and opens up unexpected new avenues of work. The feasibility of the cable concept, its cooling as well as the quench detection for the MADMAX magnet was demonstrated during these tests.
Engineers from Irfu's Division of Systems Engineering (DIS), co-managers of several EPICS sub-projects, took part in a particularly rewarding "Document-athon" experience, both technically and humanely.
EPICS is a collection of open-source software tools for managing the control-system part of an experiment. This is a vast and complex subject, which is constantly evolving and therefore needs to be properly documented. This documentation effort requires a lot of resources. The Document-athon aims to bring EPICS contributors together, physically and virtually, and work on various topics related to the EPICS documentation. It is also a unique opportunity to share ideas with colleagues from all over the world on a wide range of subjects: common problems, working methods, technical solutions (adopted or under study), etc.
The docs.epics-controls.org website now centralizes almost all EPICS tools and aims to become the central/preferred location for its documentation.
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Dernière mise à jour : Jan 26th, 2024
