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High Field Magnet Programme -- European Strategy Input
/ Alfonso, L. (INFN, Parma) ; Ambrosio, G. (Fermilab) ; Araujo, D. (PSI, Villigen) ; Arpaia, P. (INFN, Parma) ; Auchmann, B. (PSI, Villigen ; CERN) ; Axensalva, J. (CERN) ; Balconi, L. (INFN, Milan ; Milan U. ; INFN, Parma) ; Ballarino, A. (CERN) ; Barzi, E. (Ohio State U. ; Unlisted) ; Baskys, A. (CERN) et al.
In this submission, we describe research goals, implementation, and timelines of the High Field Magnet Programme, hosted by CERN. [...]
arXiv:2504.16885 ; FERMILAB-PUB-25-0283-TD.
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Fermilab Library Server - Fulltext - Fulltext
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Residual resistance ratio measurement system for Nb$_3$Sn wires extracted from Rutherford cables
/ Pong, Ian (LBNL, Berkeley) ; Baskys, Algirdas (LBL, Berkeley ; CERN) ; Sanabria, Charlie (LBL, Berkeley ; MIT) ; Naus, Michael (LBNL, Berkeley) ; Myers, Scott (LBNL, Berkeley) ; Pan, Heng (LBL, Berkeley ; UESTC, Chengdu) ; Lee, Jonathan (LBL, Berkeley ; Natl. High Mag. Field Lab.) ; Wang, Li (LBNL, Berkeley) ; Taylor, Jordan (LBL, Berkeley) ; Turqueti, Marcos (LBNL, Berkeley) et al.
Residual resistance ratio (RRR) of superconducting strands is an important parameter for magnet electrical stability. RRR serves as a measure of the low-temperature electrical conductivity of the copper within a conductor that has a copper stabilization matrix. [...]
2024 - 9 p.
- Published in : Cryogenics 146 (2025) 104002
Fulltext: PDF;
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Lessons learned from hardware failure during HL-LHC AUP cabling
/ Lee, Elizabeth (LBL, Berkeley) ; Baskys, Algirdas (CERN) ; Lin, Andy (LBL, Berkeley) ; Perez, Carlos (LBL, Berkeley) ; Buron, Elaine (LBL, Berkeley) ; Pong, Ian (LBL, Berkeley) ; Croteau, Jean-Francois (LBL, Berkeley) ; Naus, Michael (LBL, Berkeley) ; Lipton, Thomas (LBL, Berkeley)
The cabling facility at Lawrence Berkeley National Laboratory has experienced a heavy increase in workload during the US-HiLumi Accelerator Upgrade Project (AUP). Several critical components have experienced unexpected failure over the project’s lifetime for reasons at least partly attributable due to increased wear and tear on the hardware subsystems. [...]
2024 - 4 p.
- Published in : JACoW IPAC 2024 (2024) WEPS80
Fulltext: PDF;
In : 15th International Particle Accelerator Conference (IPAC 2024), Nashville, TN, United States, 19 - 24 May 2024, pp.WEPS80
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Microstructure Characterization of Nb$_3$Sn Wires With Nanoprecipitate Artificial Pinning Centers Using Synchrotron High-Energy X-Rays
/ Croteau, Jean-Francois (LBL, Berkeley) ; Baskys, Algirdas (LBL, Berkeley ; CERN) ; Naus, Michael (LBL, Berkeley) ; Park, Jun-Sang (Argonne, PHY) ; Kenesei, Peter (Argonne, PHY) ; Xu, Xingchen (Fermilab) ; Wan, Fang (Fermilab) ; Pong, Ian (LBL, Berkeley)
Synchrotron high-energy X-rays were used in an attempt to estimate nanoprecipitate size and size distribution in Nb$_3$Sn powder-in-tube wires with ZrO$_2$ or HfO$_2$ rtificial pinning centers via small angle X-ray scattering (SAXS). The effect of sample preparation was studied but measurements for as-received and for partially etched wires were not successful. [...]
2023 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 34 (2024) 8000505
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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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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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Cable Design and Development for the High-Temperature Superconductor Cable Test Facility Magnet
/ Pong, Ian (LBNL, Berkeley) ; Hafalia, Aurelio (LBNL, Berkeley) ; Higley, Hugh (LBNL, Berkeley) ; Lee, Elizabeth (LBNL, Berkeley) ; Lin, Andy (LBNL, Berkeley) ; Naus, Michael (LBNL, Berkeley) ; Perez, Carlos (LBNL, Berkeley) ; Prestemon, Soren (LBNL, Berkeley) ; Sabbi, GianLuca (LBNL, Berkeley) ; Hopkins, Simon (CERN) et al.
A large bore “High-Temperature Superconductor Cable Test Facility Magnet” for testing advanced cables and inserts in high transverse field is in its design phase. This magnet will be the core component of a facility for developing conductors and accelerator magnets operating above 15 T, an enabling technology for next-generation fusion devices using magnetic confinement of plasma and for future energy frontier colliders. [...]
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 1-5
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A Strategic Approach to Advance Magnet Technology for Next Generation Colliders
/ Ambrosio, G. (Fermilab) ; Amm, K. (Brookhaven Natl. Lab.) ; Anerella, M. (Brookhaven Natl. Lab.) ; Apollinari, G. (Fermilab) ; Arbelaez, D. (LBNL, Berkeley) ; Auchmann, B. (PSI, Villigen) ; Balachandran, S. (Natl. High Mag. Field Lab.) ; Baldini, M. (Fermilab) ; Ballarino, A. (CERN) ; Barua, S. (Natl. High Mag. Field Lab.) et al.
Colliders are built on a foundation of superconducting magnet technology that provides strong dipole magnets to maintain the beam orbit and strong focusing magnets to enable the extraordinary luminosity required to probe physics at the energy frontier. [...]
arXiv:2203.13985 ; FERMILAB-CONF-22-283-TD.
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Fermilab Library Server - eConf - Fulltext - Fulltext
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