| Article | |
| Report number | arXiv:2202.10305 |
| Title | Design of a Canted-cosine-theta orbit corrector for the High Luminosity LHC |
| Author(s) | Pepitone, K. (Uppsala U.) ; Kirby, G. (CERN) ; Ruber, R. (Uppsala U.) ; Ahl, A. (Scanditronix Instrument, Uppsala) ; Canale, M. (CERN) ; Dugic, I. (Linnaeus U.) ; Gentini, L. (CERN) ; Johansson, M. (Unlisted, SE) ; Karlsson, G. (Linnaeus U.) ; Kovacikova, J. (Linnaeus U.) ; Lindström, J. (Unlisted, SE) ; Olsson, A. (Unlisted, SE) ; Olvegård, M. (Uppsala U.) |
| Publication | 2022-09 |
| Imprint | 2022-02-21 |
| Number of pages | 4 |
| In: | IEEE Trans. Appl. Supercond. 32 (2022) 4003104 |
| In: | 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4003104 |
| DOI | 10.1109/TASC.2022.3154334 (publication) |
| Subject category | Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Project | CERN HL-LHC |
| Abstract | The High Luminosity LHC requires dipole orbit correctors grouped in double aperture magnet assemblies. They provide a field of 3.1 T at 100 A in an aperture of 70 mm. The current standard design is a classical cosine-theta layout made with ribbon cable. However, the electric insulation of the ribbon cable is not radiation-resistant enough to withstand the radiation load expected in the coming years of LHC operation. A new design, based on a radiation-resistant cable with polyimide insulator, that can replace the existing orbit correctors at their end-of-life, is needed. The challenge is to design a magnet that fits directly into the existing positions and that can operate with the same busbars, passive quench protection, and power supplies as existing magnets. We propose a self-protected canted-cosine-theta (CCT) design. We take the opportunity to explore new concepts for the CCT design to produce a cost-effective and high-quality design with a more sustainable use of resources. The new orbit corrector design meets high requirements on the field quality while keeping within the same mechanical volume and maximum excitation current. A collaboration of Swedish universities and Swedish industry has been formed for the development and production of a prototype magnet following a concurrent engineering (CE) methodology to reduce the time needed to produce a functional CCT magnet. The magnet has a 1 m long CCT dipole layout consisting of two coils. The superconductor is a commercially available 0.33 mm wire with polyimide insulation in a 6-around-1 cable. The channels in the coil formers, that determine the CCT layout, allow for 2 x 5 cable layers. A total of 70 windings makes that the coil current can be kept below 100 A. We will present the detailed design and preliminary quench simulations. |
| Copyright/License | publication: © 2022-2024 IEEE preprint: (License: CC BY 4.0) |
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Zapis kreiran 2022-03-09, zadnja izmjena 2023-03-14
