CERN Accelerating science

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1.
Quench propagation in Nb$_{3}$Sn cos-theta 11 T dipole model magnets in high stress areas / Mangiarotti, Franco J (CERN) ; Willering, Gerard P (CERN) ; Bajas, Hugues (CERN) ; Bajko, Marta ; Bordini, Bernardo (CERN) ; Bottura, Luca (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Löffler, Christian H (CERN) ; Gomez, Jose V Lorenzo ; Savary, Frederic (CERN) et al.
A large number of training quenches at various currents, temperatures, and ramp rates, have been performed on six 11 T dipole model magnets. Quenches in the midplane of these magnets were of special interest, since the quench current in the last three models measured in 2016 was limited to between 84% and 92% of the magnets short sample limit. [...]
2018 - 4 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4008204 Fulltext: PDF;
In : 13th European Conference on Applied Superconductivity, ICCG, Geneva, Switzerland, 17 - 21 Sep 2017, pp.4008204
2.
Multiscale approach to the mechanical behavior of epoxy impregnated Nb$_{3}$Sn coils for the 11 T dipole / Daly, Michael (CERN) ; Loffler, Christian H (CERN) ; Smekens, David (CERN) ; Fontenla, A T (CERN) ; Sacristan De Frutos, Oscar (CERN) ; Guinchard, Michael (CERN) ; Savary, Frederic (CERN)
The superconducting 11 T dipole magnets developed at CERN for the HL-LHC project are equipped with coils manufactured from Nb$_{3}$Sn Rutherford cables and following the wind and react fabrication technique. The brittleness of the multifilamentary structure of the Nb$_{3}$Sn within the cable strands exposes the coils to permanent performance degradation when subjected to excessive strain during assembly and operation. [...]
2018 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4007706
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4007706
3.
Design and Construction of the Full-Length Prototype of the 11-T Dipole Magnet for the High Luminosity LHC Project at CERN / Savary, Frederic (CERN) ; Bordini, Bernardo (CERN) ; Fiscarelli, Lucio (CERN) ; Foussat, A P (CERN) ; Grand-Clement, Ludovic (CERN) ; Lackner, Friedrich (CERN) ; Loffler, C H (CERN) ; Semeraro, Michela (CERN) ; Smekens, David (CERN) ; Duarte Ramos, Delio (CERN) et al.
The luminosity upgrade of the Large Hadron Collider (LHC) at CERN requires the installation of additional collimators in the dispersion suppressor regions of the accelerator. The upgrade foresees the installation of one additional collimator on either side of interaction point 7 (IP7) at the location of the existing main dipoles (MBs) that will be replaced by shorter and more powerful dipoles, and of one additional collimator on either side of IP2 at the location of existing empty cryostats. [...]
2018 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4007106
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4007106
4.
Comparison of mechanical concepts for $Nb_3Sn$ high field accelerator magnets / Loffler, Christian Hannes
Several magnets using Nb$_{3}$Sn as conductor are currently developed at CERN; these magnets are either slated for future updates of the LHC or for research purposes relating to future accelerators [...]
CERN-THESIS-2017-078 - 83 p.

Fulltext
5.
Progress on the Development of the $Nb_3Sn$ 11T Dipole for the High Luminosity Upgrade of LHC / Savary, Frederic (CERN) ; Bajko, Marta (CERN) ; Bordini, Bernardo (CERN) ; Bottura, Luca (CERN) ; Fiscarelli, Lucio (CERN) ; Fleiter, Jerome (CERN) ; Foussat, Arnaud (CERN) ; Izquierdo Bermudez, Susana (CERN) ; Karppinen, Mikko (CERN) ; Lackner, Friedrich (CERN) et al.
The high-luminosity large hadron collider (LHC) project at CERN entered into the production phase in October 2015 after the completion of the design study phase. In the meantime, the development of the 11 T dipole needed for the upgrade of the collimation system of the machine made significant progress with very good performance of the first two-in-one magnet model of 2-m length made at CERN. [...]
FERMILAB-CONF-16-676.- 2017 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 27 (2017) 4003505 Fulltext: PDF; External link: FERMILABCONF
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.4003505
6.
The 11 T Dipole for HL-LHC: Status and Plan / Savary, F (CERN) ; Barzi, E (Fermilab) ; Bordini, B (CERN) ; Bottura, L (CERN) ; Chlachidze, G (Fermilab) ; Ramos, D (CERN) ; Izquierdo Bermudez, S (CERN) ; Karppinen, M (CERN) ; Lackner, F (CERN) ; Loffler, C H (CERN) et al.
The upgrade of the Large Hadron Collider (LHC) collimation system includes additional collimators in the LHC lattice. The longitudinal space for these collimators will be created by replacing some of the LHC main dipoles with shorter but stronger dipoles compatible with the LHC lattice and main systems. [...]
FERMILAB-CONF-16-358-TD.- 2016 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 26 (2016) 4005305 Fulltext: PDF; External link: FERMILABCONF
In : 24th International Conference on Magnet Technology, Seoul, Korea, 18 - 23 Oct 2015, pp.4005305

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