| Article | |
| Report number | CERN-ACC-2021-0005 |
| Title | Mechanical Behavior of the Shielded HL-LHC Beam Screen during a Magnet Quench |
| Author(s) | Morrone, Marco (CERN) ; Garion, Cedric (CERN) ; Chiggiato, Paolo (CERN) ; Sacristan De Frutos, Oscar ; Guinchard, Michael (CERN) ; Fiscarelli, Lucio (CERN) |
| Publication | 2021 |
| Imprint | 04 Jun 2021 |
| Number of pages | 24 |
| In: | IEEE Trans. Appl. Supercond. 31 (2021) 9000616 |
| DOI | 10.1109/TASC.2021.3067278 |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Project | CERN HL-LHC |
| Free keywords | magnet quench test ; mechanical measurements ; shielded beam screen |
| Abstract | In the framework of the High-Luminosity Large Hadron Collider (HL-LHC) project, larger and shielded beam screens will be installed in the beam pipe of the superconducting magnets of the insertion next to the ATLAS and CMS detectors. The beam screen is a complex assembly that guarantees the vacuum requirements while shielding the magnet cold mass from the induced heat loads. Such an assembly has to withstand high intensity electromagnetic forces induced during magnet quenches. The mechanical stability was verified in a dedicated quench test campaign performed at the magnet test station of CERN. Strain gauges, custom-made probes, and optical fibres were installed in the beam screen to measure deformations during a quench. Magnetic field measurements were also carried out by means of pick-up coils mounted within the assembly. The main outcomes of this work are the elastic behaviour of the beam screen after 52 quenches and a satisfactory agreement between measurements and simulations. |
| Copyright/License | publication: © 2021-2025 IEEE |
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Record created 2021-07-20, last modified 2021-07-21
