| Article | |
| Report number | arXiv:2301.09523 ; FERMILAB-PUB-22-855-TD |
| Title | Challenges and Lessons Learned From Fabrication, Testing, and Analysis of Eight MQXFA Low Beta Quadrupole Magnets for HL-LHC |
| Author(s) | 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) ; De Sousa, P. Borges (CERN) ; Bossert, R. (Fermilab) ; Bulat, Bartosz Wojciech (CERN) ; Carcagno, Ruben H. (Fermilab) ; Cheng, Daniel W. (LBL, Berkeley) ; Chlachidze, G. (Fermilab) ; Cooley, Lance (Natl. High Mag. Field Lab.) ; Crouvizier, Mickael (CERN) ; Devred, Arnaud (CERN) ; DiMarco, Joseph (Fermilab) ; Feher, Sandor (Fermilab) ; Ferracin, Paolo (LBL, Berkeley) ; Ferradas Troitino, Jose (CERN) ; Garcia Fajardo, Laura (LBL, Berkeley) ; Gourlay, S. (Brookhaven) ; Hocker, Henry M. (Brookhaven) ; Izquierdo Bermudez, Susana (CERN) ; Joshi, Piyush (Brookhaven) ; Krave, Steven T. (Fermilab) ; Lee, Elizabeth Marie (LBL, Berkeley) ; Levitan, Jeremy W. (Natl. High Mag. Field Lab.) ; Lombardo, Vito (Fermilab) ; Lu, Jun (Natl. High Mag. Field Lab.) ; Marchevsky, Maxim (LBL, Berkeley) ; Marinozzi, Vittorio (Fermilab) ; Moros, Alice (CERN) ; Muratore, Joseph F. (Brookhaven) ; Naus, Michael (LBL, Berkeley) ; Nobrega, F. (Fermilab) ; Page, T. (Fermilab) ; Pong, Ian (LBL, Berkeley) ; Perez, J.C. (CERN) ; Prestemon, Soren (LBL, Berkeley) ; Ravaioli, E. (CERN) ; Ray, Katherine L. (LBL, Berkeley) ; Sabbi, GianLuca (LBL, Berkeley) ; Schmalzle, Jesse (Brookhaven) ; Seyl, J. (Fermilab) ; Sgobba, Stefano (CERN) ; Stoynev, S. (Fermilab) ; Strauss, T. (Fermilab) ; Todesco, Ezio (CERN) ; Turrioni, Daniele (Fermilab) ; Vallone, Giorgio (LBL, Berkeley) ; Van Weelderen, R. (CERN) ; Wanderer, P. (Brookhaven) ; Wang, X. (LBL, Berkeley) ; Yu, Miao (Fermilab) |
| Publication | 2023-08 |
| Imprint | 2023-01-23 |
| Number of pages | 8 |
| In: | IEEE Trans. Appl. Supercond. 33 (2023) 4003508 |
| DOI | 10.1109/TASC.2023.3261842 |
| Subject category | physics.acc-ph ; Accelerators and Storage Rings |
| Accelerator/Facility, Experiment | CERN LHC |
| Project | CERN HL-LHC |
| Abstract | 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. This AUP effort is shared by BNL, Fermilab, and LBNL, with strand verification tests at NHMFL. An important step of the AUP QA plan is the testing of MQXFA magnets in a vertical cryostat at BNL. The acceptance criteria that could be tested at BNL were all met by the first four production magnets (MQXFA03-MQXFA06). Subsequently, two magnets (MQXFA07 and MQXFA08) did not meet some criteria and were disassembled. Lessons learned during the disassembly of MQXFA07 caused a revision to the assembly specifications that were used for MQXFA10 and subsequent magnets. In this paper, we present a summary of: 1) the fabrication and test data of all the MQXFA magnets; 2) the analysis of MQXFA07/A08 test results with characterization of the limiting mechanism; 3) the outcome of the investigation, including the lessons learned during MQXFA07 disassembly; and 4) the finite element analysis correlating observations with test performance. |
| Copyright/License | preprint: (License: CC BY 4.0) publication: © 2023-2024 IEEE |
Corresponding record in: Inspire
Record created 2023-01-25, last modified 2024-10-25