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CERN Accelerating science

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1.
Measurement of integrated gradient and field quality on the first Q2 magnets for HL-LHC / Fiscarelli, Lucio (CERN) ; Todesco, Ezio (CERN) ; Mangiarotti, Franco (CERN) ; Deferne, Guy (CERN) ; Pentella, Mariano (CERN) ; Rogacki, Piotr (CERN) ; Russenschuck, Stephan (CERN) ; Izquierdo Bermudez, Susana (CERN)
The Q2 insertion quadrupoles for the High Luminosity upgrade of the LHC are currently being produced and tested. The test of the first units provides valuable information about the field quality of superconducting accelerator magnets built from Nb3Sn coils. [...]
2024 - 4 p. - Published in : JACoW IPAC 2024 (2024) WEPS64 Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPS64
2.
LHC Triplet Task Force Report / Arduini, Gianluigi (CERN) ; Bradu, Benjamin (CERN) ; Brodzinski, Krzysztof (CERN) ; Bruce, Roderik (CERN) ; Cerutti, Francesco (CERN) ; Ciccotelli, Alessia (University of Manchester (GB)) ; Deferne, Guy (CERN) ; Fartoukh, Stephane (CERN) ; Fessia, Paolo (CERN) ; Garion, Cedric (CERN) et al.
The excellent performance of the Large Hadron Collider (LHC) and the extension of Run 3 by one year have led to a significant increase of the expected integrated luminosity by the end of its operation and before the start of the High Luminosity LHC (HL-LHC), exceeding the design LHC integrated luminosity of 300 fb−1 for which the final focus region has been designed. [...]
CERN-ACC-2023-0004.
- 2023. - 95 p.
Full text
3.
Instruments and Methods for the Magnetic Measurement of the Super-FRS Magnets / Golluccio, Giancarlo (CERN) ; Buzio, Marco (CERN) ; Caltabiano, Daniele (CERN) ; Deferne, Guy (CERN) ; Dunkel, Olaf (CERN) ; Fiscarelli, Lucio (CERN) ; Giloteaux, David (CERN) ; Petrone, Carlo (CERN) ; Russenschuck, Stephan (CERN) ; Schnizer, Pierre (Darmstadt, GSI)
The Super-FRS is a new fragment separator to be built as part of the Facility for Antiproton and Ion Research (FAIR) [\ref{fair_{w}eb}] at Darmstadt. The acceptance tests and magnetic measurements of the superferric separation dipoles and multiplets (containing quadrupole and higher-order magnets) will be performed at CERN in collaboration with GSI/FAIR [\ref{abstract_{f}acility}]. [...]
CERN-ACC-2016-285.- 2016 - 3 p. - Published in : 10.18429/JACoW-IPAC2016-TUPMB037 Published version from JACoW: PDF;
In : 7th International Particle Accelerator Conference, Busan, Korea, 8 - 13 May 2016, pp.TUPMB037
4.
Determination of the Magnetic Axis of a CLIC Drive Beam Quadrupole with respect to External Alignment Targets using a Combination of WPS, CMM and Laser Tracker Measurements / Duquenne, Mathieu (CERN) ; Anastasopoulos, Michail (CERN) ; Caiazza, Domenico (CERN) ; Deferne, Guy (CERN) ; Garcia Perez, Juan (CERN) ; Mainaud Durand, Helene (CERN) ; Modena, Michele (CERN) ; Rude, Vivien (CERN) ; Sandomierski, Jacek (CERN) ; Sosin, Mateusz (CERN)
CERN is currently studying the feasibility of building a high energy e⁺ e^{−} linear collider: the CLIC (Compact LInear Collider). One of the engineering challenges is the pre-alignment precision and accuracy requirement on the alignment of the linac components. [...]
2014 - 3 p. - Published in : , pp. TUPRI093 Fulltext: PDF; External link: Published version from JACoW
In : 5th International Particle Accelerator Conference, Dresden, Germany, 15 - 20 Jun 2014, pp.TUPRI093
5.
Latest Results of the OSQAR Photon Regeneration Experiment for Axion-Like Particle Search / Ballou, Rafik (LPSC, Grenoble ; Neel Lab, Grenoble) ; Deferne, Guy (CERN) ; Duvillaret, Lionel (LPSC, Grenoble) ; Finger, Michael (Charles U.) ; Finger, Miroslav (Charles U.) ; Flekova, Lucie (Charles U.) ; Hosek, Jan (Prague, Tech. U.) ; Husek, Tomas (Charles U.) ; Jary, Vladimir (Prague, Tech. U.) ; Jost, Remy (U. Grenoble Alpes ; LPSC, Grenoble) et al.
The OSQAR photon regeneration experiment searches for pseudoscalar and scalar axion-like particles by the method of "Light Shining Through a Wall", based on the assumption that these weakly interacting sub-eV particles couple to two photons to give rise to quantum oscillations with optical photons in strong magnetic field. No excess of events has been observed, which constrains the di-photon coupling strength of both pseudoscalar and scalar particles down to $5.7 \cdot 10^{-8}$ GeV$^{-1}$ in the massless limit. [...]
arXiv:1410.2566.- 2014 - 6 p. - Published in : 10.3204/DESY-PROC-2014-03/pugnat_pierre Fulltext: 125-130 - PDF; fulltext - PDF; arXiv:1410.2566 - PDF; External link: Preprint
In : 10th Patras Workshop on Axions, WIMPs and WISPs, CERN, Geneva, Switzerland, 29 Jun - 04 Jul 2014, pp.125-130
6.
Mathematical formulation to predict the harmonics of the superconducting Large Hadron Collider magnets; 3, Precycle ramp rate effects and magnet characterization / Sammut, Nicholas (Malta U. ; CERN) ; Bottura, Luca (CERN) ; Deferne, Guy (CERN) ; Venturini Delsolaro, Walter (CERN)
The Large Hadron Collider (LHC) at CERN is equipped with a feed-forward control system known as the field description for the LHC (FiDeL) which is designed to predict the magnetic field and its multipoles, hence reducing the burden on beam based feedback. FiDeL consists of a physical and empirical parametric field model based on magnetic measurements at warm and in cryogenic conditions. [...]
2009 - Published in : Phys. Rev. Spec. Top. Accel. Beams 12 (2009) 102401 APS Published version, local copy: PDF;

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