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1.
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Analysis of the Mechanical Performance of the 4.2-m-Long MQXFA Magnets for the Hi-Lumi LHC Upgrade
/ Garcia Fajardo, L. (LBL, Berkeley) ; Ambrosio, G. (Fermilab) ; Yahia, A. Ben (Brookhaven) ; Cheng, D.W. (LBL, Berkeley) ; Ferracin, P. (LBL, Berkeley) ; Ferradas Troitino, J. (CERN) ; Izquierdo Bermudez, S. (CERN) ; Muratore, J. (Brookhaven) ; Prestemon, S. (LBL, Berkeley) ; Ray, K.L. (LBL, Berkeley) et al.
Under the U.S. High Luminosity LHC Accelerator Upgrade Project (HL-LHC AUP), the 150 mm bore, high-field Nb3Sn low-{̱e̱ṯa̱}̱ MQXFA quadrupole magnets are being fabricated, assembled and tested, in the context of the CERN Hi-Luminosity LHC (HL-LHC) upgrade. [...]
arXiv:2303.16795; FERMILAB-PUB-23-116-TD.-
2023-03-27 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003205
Fulltext: 2303.16795 - PDF; 4b8cc3a91b35c5867bfac57ac156409a - PDF; External link: Fermilab Accepted Manuscript
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2.
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Status and challenges of the interaction region magnets for HL-LHC
/ Todesco, E (CERN) ; Izquierdo Bermudez, S (CERN) ; Foussat, A (CERN) ; Gautheron, E (CERN) ; Kirby, G (CERN) ; Felice, H (CERN) ; Perez, J C (CERN) ; Fleiter, J (CERN) ; Barth, C (CERN) ; Milanese, A (CERN) et al.
About one hundred magnets of six different types shall be installed in the High Luminosity LHC (HL-LHC) in the years 2026-2028 at CERN. The magnets design, construction and test are based on CERN collaborations with institutes and industrial partners in USA, Spain, Italy, Japan and China. [...]
FERMILAB-PUB-22-861-TD.-
2023 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4001608
Fulltext: PDF; External link: Fermilab Accepted Manuscript
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3.
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MQXFA Final Design Report
/ Ambrosio, Giorgio
The MQXFA Quadrupole magnets will be installed in High Luminosity LHC to form the Q1 and Q3 inner triplet optical elements in front of the interaction points 1 (ATLAS) and 5 (CMS) [...]
arXiv:2203.06723 ; FERMILAB-TM-2773-TD ; US-HiLumi-doc-948
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120 p.
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4.
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Challenges and Lessons Learned From Fabrication, Testing, and Analysis of Eight MQXFA Low Beta Quadrupole Magnets for HL-LHC
/ Ambrosio, Giorgio (Fermilab) ; Amm, Kathleen (Brookhaven) ; Anerella, Michael (Brookhaven) ; Apollinari, Giorgio (Fermilab) ; Izquierdo, Gonzalo Arnau (CERN) ; Baldini, Maria (Fermilab) ; Ballarino, Amalia (CERN) ; Barth, Christian (CERN) ; Yahia, Anis Ben (Brookhaven) ; Blowers, James (Fermilab) et al.
By the end of October 2022, the US HL-LHC Accelerator Upgrade Project (AUP) had completed fabrication of ten MQXFA magnets and tested eight of them. The MQXFA magnets are the low beta quadrupole magnets to be used in the Q1 and Q3 Inner Triplet elements of the High Luminosity LHC. [...]
arXiv:2301.09523; FERMILAB-PUB-22-855-TD.-
2023-08 - 8 p.
- Published in : IEEE Trans. Appl. Supercond. 33 (2023) 4003508
Fulltext: 2301.09523 - PDF; 81b192c337ae5d5acaec37450e135529 - PDF; External link: Fermilab Library Server
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5.
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Optimizing the use of pressurized bladders for the assembly of HL-LHC MQXFB magnets
/ Ferradas Troitino, J. (CERN) ; Ambrosio, G. (Fermilab) ; Bourcey, N. (CERN) ; Cheng, D. (LBL, Berkeley) ; Devred, A. (CERN) ; Felice, H. (L2S, Gif sur Yvette) ; Ferracin, P. (LBL, Berkeley) ; Guinchard, M. (CERN) ; Izquierdo Bermudez, S. (CERN) ; Kandemir, K. (CERN) et al.
The use of pressurized bladders for stress control of superconducting magnets was firstly proposed at Lawrence Berkeley National Laboratory (LBNL) in the early 2000s. Since then, the so-called bladders and keys procedure has become one of the reference techniques for the assembly of high-field accelerator magnets and demonstrators. [...]
arXiv:2301.09537; FERMILAB-PUB-22-911-TD.-
2023-04-19 - 17 p.
- Published in : Supercond. Sci. Technol. 36 (2023) 065002
Fulltext: 2301.09537 - PDF; FERMILAB-PUB-22-911-TD - PDF; 3eb6eaa164998b3b75b795795e9c0bc4 - PDF; Fulltext from Publisher: PDF; External link: Fermilab Library Server
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6.
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Failure Assessments for MQXF Magnet Support Structure with a Graded Approach
/ Pan, Heng (LBL, Berkeley) ; Anderssen, Eric C (LBL, Berkeley) ; Cheng, Daniel W (LBL, Berkeley) ; Prestemon, Soren O (LBL, Berkeley) ; Ambrosio, Giorgio (Fermilab)
The High-Luminosity Large Hadron Collider (HLLHC) upgrade requires new quadrupoles, MQXF, to replace the present LHC inner triplets. The MQXFA magnet is the first prototype that has a 150 mm aperture and uses Nb3Sn superconducting technology in a 4.2 m magnetic length structure. [...]
FERMILAB-PUB-19-057-TD.-
2019 - 7 p.
- Published in : IEEE Trans. Appl. Supercond. 29 (2019) 8401507
Fulltext: PDF; External link: Fermilab Accepted Manuscript
In : Applied Superconductivity Conference 2018, Seattle, United States Of America, 28 Oct - 2 Nov 2018, pp.8401507
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7.
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Field Quality of the 4.5-m-Long MQXFA Pre-Series Magnets for the HL-LHC Upgrade as Observed During Magnet Assembly
/ Wang, X (LBL, Berkeley) ; Ambrosio, G (Fermilab) ; Yahia, A Ben (Brookhaven) ; Cheng, D W (LBL, Berkeley) ; DiMarco, J (Fermilab) ; Ferracin, P (LBL, Berkeley) ; Ghiorso, W (LBL, Berkeley) ; Izquierdo Bermudez, S (CERN) ; Myers, C (LBL, Berkeley) ; Pan, H (LBL, Berkeley) et al.
The U.S. High-Luminosity LHC Accelerator Upgrade Project (HL-LHC AUP) is developing MQXFA magnets, a series of 4.5 m long 150 mm aperture high-field Nb$_3$Sn quadrupole magnets for the HL-LHC upgrade at CERN. [...]
FERMILAB-PUB-22-524-TD.-
2022 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 32 (2022) 4002405
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4002405
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8.
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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
In : 27th International Conference on Magnet Technology (MT-27), Fukuoka, Japan, 15 - 19 Nov 2021, pp.4000306
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9.
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Challenges in the Support Structure Design and Assembly of HD3, a Nb$_3$Sn Block-Type Dipole Magnet
/ Felice, H (LBNL, Berkeley) ; Borgnolutti, F (LBNL, Berkeley) ; Caspi, S (LBNL, Berkeley) ; Cheng, D W (LBNL, Berkeley) ; Dietderich, D R (LBNL, Berkeley) ; Ferracin, P (LBNL, Berkeley) ; Godeke, A (LBNL, Berkeley) ; Hafalia, A R (LBNL, Berkeley) ; Joseph, J M (LBNL, Berkeley) ; Lizarazo, J (LBNL, Berkeley) et al.
As part of the development of very high field dipole magnets for particle accelerators, the Superconducting Magnet Program at Lawrence Berkeley National Laboratory is developing block-type dipole magnets. One of the main challenges of this geometry is to provide support to the coil in the aperture while maintaining an adequate clear bore. [...]
2013 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 23 (2013) 4001705
In : Applied Superconductivity Conference 2012: The Next Century of Superconductivity, Portland, OR, USA, 7 - 12 Oct 2012, pp.4001705
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10.
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Assembly and Test of HD2, a 36 mm Bore High Field ${\rm Nb}_{3}{\rm Sn}$ Dipole Magnet
/ Ferracin, P (LBL, Berkeley) ; Bingham, B (LBL, Berkeley) ; Caspi, S (LBL, Berkeley) ; Cheng, D W (LBL, Berkeley) ; Dietderich, D R (LBL, Berkeley) ; Felice, H (LBL, Berkeley) ; Godeke, A (LBL, Berkeley) ; Hafalia, A R (LBL, Berkeley) ; Hannaford, C R (LBL, Berkeley) ; Joseph, J M (LBL, Berkeley) et al.
We report on the fabrication, assembly, and test of the ${\rm Nb}_{3}{\rm Sn}$ dipole magnet HD2. The magnet, aimed at demonstrating the application of ${\rm Nb}_{3}{\rm Sn}$ superconductor in high field accelerator-type dipoles, features a 36 mm clear bore surrounded by block-type coils with tilted ends. [...]
2009 - 4 p.
- Published in : IEEE Trans. Appl. Supercond. 19 (2009) 1240-1243
In : Applied Superconductivity Conference 2008, Chicago, IL, USA, 17 - 22 Aug 2008, pp.1240-1243
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