2021-04-13 06:01 |
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2021-04-12 21:34 |
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2021-04-07 15:36 |
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2021-04-06 04:00 |
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Proof of Concept of High-Temperature Superconducting Screens for Magnetic Field-Error Cancellation in Accelerator Magnets
/ Bortot, L. (CERN ; Darmstadt, Tech. U.) ; Mentink, M. (CERN) ; Petrone, C. (CERN) ; Van Nugteren, J. (CERN) ; Deferne, G. (CERN) ; Koettig, T. (CERN) ; Kirby, G. (CERN) ; Pentella, M. (CERN ; Turin Polytechnic) ; Perez, J.C. (CERN) ; Pincot, F.O. (CERN) et al.
Accelerators magnets must have minimal magnetic field imperfections for reducing particle-beam instabilities. [...]
arXiv:2103.14354.
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11 p.
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2021-03-31 06:26 |
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2021-03-31 06:26 |
Fiber optic quench detection for large-scale HTS magnets demonstrated on VIPER cable during high-fidelity testing at the SULTAN facility
/ Salazar, Erica E (MIT, Cambridge, CTP) ; Badcock, Rodney A (Victoria U., Wellington) ; Bajko, Marta (CERN) ; Castaldo, Bernardo (CERN) ; Davies, Mike (Victoria U., Wellington) ; Estrada, Jose (MIT, Cambridge, CTP) ; Fry, Vincent (MIT, Cambridge, CTP) ; Gonzales, Jofferson T (Victoria U., Wellington) ; Michael, Philip C (MIT, Cambridge, CTP) ; Segal, Michael (Unlisted, US, MA) et al.
Fiber-optic thermometry has the potential to provide rapid and reliable quench detection for emerging large-scale, high-field superconducting magnets fabricated with high-temperature-superconductor (HTS) cables. Developing non-voltage-based quench detection schemes, such as fiber Bragg grating (FBG) technology, are particularly important for applications such as magnetic fusion devices where a high degree of induced electromagnetic noise impose significant challenges on traditional voltage-based quench detection methods. [...]
2021 - 18 p.
- Published in : Supercond. Sci. Technol. 34 (2021) 035027
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2021-03-26 12:11 |
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2021-03-26 06:13 |
Achromatic telescopic squeezing scheme and by-products: From concept to validation
/ Fartoukh, S (CERN) ; Solfaroli, M (CERN) ; De Portugal, J Coello (CERN) ; Mereghetti, A (CERN) ; Poyet, A (CERN) ; Wenninger, J (CERN)
The achromatic telescopic squeezing (ATS) scheme has brought an essential conceptual foundation to the HL-LHC project, making possible a strong and clean (achromatic) reduction of β*, an important parameter with respect to which several HL-LHC sub-systems were dimensioned (e.g., the 150 mm aperture of the new inner triplet quadrupoles) or justified (crab-cavities for mitigating the geometric luminosity loss factor at low β* and subsequent large crossing-angle). The basic mechanics of the scheme is shortly reminded, highlighting as well some of its by-products (Landau damping, long-range beam-beam mitigation with octupoles), and a recent improvement which made possible an early, but still partial, implementation of ATS optics in the LHC for the 2017 and 2018 LHC physics runs. [...]
2021 - 13 p.
- Published in : Phys. Rev. Accel. Beams 24 (2021) 021002
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2021-03-25 06:20 |
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2021-03-25 06:20 |
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