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Projects, Upgrade and Consolidation Projects

Derniers ajouts:
2022-05-17
20:50
Optimization of the High Order Correctors for HL-LHC Toward the Series Production / Statera, Marco (INFN, Milan) ; Alessandria, Franco (INFN, Milan ; Milan U.) ; Bellomo, Giovanni (INFN, Milan ; Milan U.) ; Broggi, Francesco (INFN, Milan) ; Imeri, Luca (INFN, Milan) ; Leone, Augusto (INFN, Milan) ; Mariotto, Samuele (INFN, Milan ; Milan U.) ; Paccalini, Antonio (INFN, Milan) ; Pasini, Alessandro (INFN, Milan) ; Pedrini, Danilo (INFN, Milan) et al.
INFN is developing at the LASA lab (Milano, Italy) the High Order (HO) corrector magnets for the High Luminosity-LHC (HL-LHC) project, which will equip the interaction regions. Five prototypes, from skew quadrupole to dodecapole, have been designed and tested at LASA. [...]
2021 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 31 (2021) 1-5

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2022-05-05
15:29
Optics Measurement and Correction Strategies for HL-LHC / Buffat, Xavier (CERN) ; Carlier, Felix Simon (CERN) ; Coello De Portugal - Martinez Vazquez, Jaime Maria ; De Maria, Riccardo (CERN) ; Dilly, Joschua Werner (Humboldt University of Berlin (DE)) ; Fol, Elena (CERN) ; Fuster Martinez, Nuria ; Gamba, Davide (CERN) ; Garcia Morales, Hector ; Garcia-Tabares Valdivieso, Ana (Universidad Complutense (ES)) et al.
The baseline strategy for optics commissioning in the HL-LHC era is presented and reviewed in detail, along with recent developments and unsolved matters in the linear and nonlinear optics measurement and correction techniques..
CERN-ACC-2022-0004.
- 2022. - 102 p.

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2022-04-19
14:45
Magnetic measurements of MCBC and MCBY orbit correctors under special cycling conditions / Chmielinska, Agnieszka (CERN) ; Fiscarelli, Lucio (CERN) ; Todesco, Ezio (CERN) ; Kozanecki, Witold (Université Paris-Saclay (FR))
In the LHC, in addition to normal beam operation, the MCBC and MCBY orbit-corrector magnets are used for deflecting the beam during the van der Meer (vdM) scans used for calibrating the absolute luminosity scale. [...]
CERN-ACC-NOTE-2022-0013.
- 2022. - 28 p.
Full text

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2022-04-07
06:02
Induction-Coil Measurement System for Normal- and Superconducting Solenoids / Petrone, Carlo (CERN) ; Sorti, Stefano (CERN) ; Dalane, Eivind (CERN) ; Mehl, Bertrand (CERN) ; Russenschuck, Stephan (CERN)
The magnetic measurement of solenoids relies on different methods to characterize the field quality and locate the magnetic axis. Usually, Hall mappers and stretched-wire systems are used for these tasks. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 9000605 Fulltext: PDF;

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2022-04-07
06:02
Assembly and Pre-Loading Specifications for the Series Production of the Nb$_3$Sn MQXFA Quadrupole Magnets for the HL-LHC / Ferracin, P (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Cheng, D W (LBL, Berkeley) ; Ferradas Troitino, J (CERN) ; Garcia Fajardo, L (LBL, Berkeley) ; Izquierdo Bermudez, S (CERN) ; Prestemon, S (LBL, Berkeley) ; Ray, K L (LBL, Berkeley) ; Solis, M J (LBL, Berkeley) ; Todesco, E (CERN) et al.
The High Luminosity LHC (HL-LHC) Project is planning to install 16 cold-masses made with Nb3Sn quadrupole magnets in the LHC Interaction Regions to significantly increase its luminosity. Half of these cold masses are fabricated at BNL, FNAL, and LBNL under the US Accelerator Research Program (AUP). [...]
2022 - 6 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4000306

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2022-04-06
06:09
Power Test of the First Two HL-LHC Insertion Quadrupole Magnets Built at CERN / Mangiarotti, F J (CERN) ; Willering, G (CERN) ; Fiscarelli, L (CERN) ; Bajko, M (CERN) ; Bottura, L (CERN) ; Desbiolles, V (CERN) ; Devred, A (CERN) ; Ferradas Troitino, J (CERN) ; Izquierdo Bermudez, S (CERN) ; Keijzer, R (CERN ; Twente U., Enschede) et al.
The High-Luminosity project (HL-LHC) of the CERN Large Hadron Collider (LHC), requires low β* quadrupole magnets in Nb$_3$Sn technology that will be installed on each side of the ATLAS and CMS experiments. After a successful shortmodel magnet manufacture and test campaign, the project has advanced with the production, assembly, and test of full-size 7.15- m-long magnets. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 1-5 Fulltext: PDF;

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2022-04-06
06:09
Conceptual Design of the HL-LHC Hollow Electron Lens Superconducting Magnet System / Foussat, Arnaud (CERN) ; Bragin, Alexey (Novosibirsk, IYF) ; Ferlin, Gerard (CERN) ; Kirby, Glyn (CERN) ; Kolehmainen, Antti (CERN) ; Nikiforov, Danila (Novosibirsk, IYF) ; Pavliuchenko, Vadim (Novosibirsk, IYF) ; Perini, Diego (CERN) ; Petrone, Carlo (CERN) ; Redaelli, Stefano (CERN) et al.
The Hollow Electron Lens (HEL) units are part of the upgrade baseline of the High-Luminosity LHC accelerator (HL-LHC) and will be installed in the machine ring at point P4 on each counter-rotating LHC proton beamline during a long shutdown in 2025-2027 at CERN. The main goal is to improve the collimation system performance by controlling beam energy loss in the beam halo. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4100905

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2022-04-06
06:09
Modelling V-I Measurements of Nb$_3$Sn Accelerator Magnets With Conductor Degradation / Keijzer, Ruben (CERN ; Twente U., Enschede) ; Succi, Giovanni (CERN) ; Willering, Gerard (CERN) ; Bordini, Bernardo (CERN) ; Bottura, Luca (CERN) ; Mangiarotti, Franco J (CERN) ; Dhallé, Marc (Twente U., Enschede) ; Kate, Herman H J Ten (Twente U., Enschede)
In the framework of the High-Luminosity Large Hadron Collider (HL-LHC) project, 11 T dipole and MQXF quadrupole magnets employing Nb$_3$Sn technology have been tested in short and long test configurations. Nb$_3$Sn magnets are more sensitive than Nb-Ti magnets to a potential degradation of their conductors during production, testing, and cycling operation. At CERN, new diagnostic tools and measurement procedures have been developed to investigate, in detail, the performance of Nb$_3$Sn accelerator type magnets. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4001105

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2022-04-06
06:09
Characterization of the Radiation Resistance of Glass Fiber Reinforced Plastics for Superconducting Magnets / Musso, Andrea (CERN) ; Nakamoto, Tatsushi (KEK, Tsukuba) ; Grande, Beatriz Del Valle (Bern U.) ; Borderas, Cinta Lucia Marraco (LPHE, Lausanne) ; Sousa, Daniela Fagundes da (Lisbon, IST) ; Sugano, Michinaka (KEK, Tsukuba) ; Ogitsu, Toru (KEK, Tsukuba) ; Tavares, Sandra Sequeira (Lausanne U.)
The overall performance of accelerator magnets strongly relies on electrical and mechanical robustness of their components. With an increase of the energy, future particle accelerators will have to withstand integral doses of ionizing radiation of up to several tens of MGy. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 7700405

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2022-04-06
06:09
Mechanical Characterization of Nb3Sn Cable Insulation Systems Used for HL-LHC Accelerator Magnets at Ambient Temperature / Wolf, Felix (CERN) ; Foussat, Arnaud (CERN) ; Lackner, Friedrich (CERN) ; Sgobba, Stefano (CERN) ; Crouvizier, Mickael (CERN) ; Canfer, Simon (Daresbury) ; Robertson, Steve (Daresbury)
The performance of accelerator magnets is strongly relying on the dielectric strength and mechanical robustness of the insulation system. This is in particular relevant for the current development of high field superconducting Nb 3 Sn magnets with the insulation system made from resin-impregnated glass fibres. [...]
2022 - 5 p. - Published in : IEEE Trans. Appl. Supercond. 32 (2022) 7700205

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