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Lessons learned from the prototypes of the MQXFA Low Beta Quadrupoles for HL-LHC and status of production in the US
/ Ambrosio, Giorgio (Fermilab) ; Amm, Kathleen (BNL, NSLS) ; Anerella, Michael (BNL, NSLS) ; Apollinari, Giorgio (Fermilab) ; Baldini, Maria (Fermilab) ; Blowers, Jamie (Fermilab) ; Bossert, Rodger (Fermilab) ; Carcagno, Ruben (Fermilab) ; Cheng, Daniel W (BNL, NSLS) ; Chlachidze, Guram (Fermilab) et al.
With the successful test of the first two pre-series magnets the US HL-LHC Accelerator Upgrade Project has started production of the MQXFA magnets to be used in Q1/Q3 inner triplet elements of the HL-LHC. This good start comes after the test of two prototypes with limited performance, and it demonstrates the importance of learning from past issues. [...]
FERMILAB-PUB-20-618-TD.-
2021 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 31 (2021) 4001105
Fulltext: PDF;
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2.
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Geometric field errors of short models for MQXF, the Nb$_{3}$Sn low-$\beta$ quadrupole for the High Luminosity LHC
/ Izquierdo Bermudez, Susana (CERN) ; Ambrosio, Giorgio (Fermilab) ; Bajas, Hugues (CERN) ; Chlachidze, Guram (Fermilab) ; Ferradas Troitino, Jose (CERN) ; Ferracin, Paolo (CERN) ; Fiscarelli, Lucio (CERN) ; Hagen, Per (CERN) ; Holik, Eddie Frank (Fermilab) ; Di Marco, Joseph (Fermilab) et al.
In the framework of the high-luminosity upgrade of the large hadron collider, the U.S. LARP collaboration and CERN are jointly developing a 150-mm aperture Nb$_{3}$Sn quadrupole for the Large Hadron Collider (LHC) interaction regions. [...]
2018 - 6 p.
- Published in : IEEE Trans. Appl. Supercond. 28 (2018) 4006306
In : 25th International Conference on Magnet Technology, Amsterdam, The Netherlands, 27 Aug - 1 Sep 2017, pp.4006306
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3.
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Field Quality Measurements in the FNAL Twin-Aperture 11 T Dipole for LHC Upgrades
/ Strauss, T (Fermilab) ; Apollinari, G (Fermilab) ; Barzi, E (Fermilab) ; Chlachidze, G (Fermilab) ; Di Marco, J (Fermilab) ; Nobrega, F (Fermilab) ; Novitski, I (Fermilab) ; Stoynev, S (Fermilab) ; Turrioni, D (Fermilab) ; Velev, G (Fermilab) et al.
FNAL and CERN are developing an 11 T Nb$_{3}$Sn dipole suitable for installation in the LHC to provide room for additional collimators. Two 1 m long collared coils previously tested at FNAL in single-aperture dipole configuration were assembled into the twin-aperture configuration and tested including magnet quench performance and field quality. [...]
FERMILAB-CONF-16-520-TD; NAPAC-2016-MOPOB41.-
2017 - 4 p.
- Published in : 10.18429/JACoW-NAPAC2016-MOPOB41
Fulltext: PDF; External links: FERMILABCONF; JACoW
In : 2016 North American Particle Accelerator Conference, Chicago, IL, USA, 9 - 14 Oct 2016, pp.MOPOB41
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4.
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Magnetic Analysis of the Nb$_3$Sn low-beta Quadrupole for the High Luminosity LHC
/ Izquierdo Bermudez, S (CERN) ; Ambrosio, G (Fermilab) ; Chlachidze, G (Fermilab) ; Ferracin, P (CERN) ; Holik, E (Fermilab) ; Di Marco, J (Fermilab) ; Todesco, E (CERN) ; Sabbi, G L (LBNL, Berleley) ; Vallone, G (CERN) ; Wang, X (LBNL, Berleley)
/LARP
As part of the Large Hadron Collider Luminosity upgrade (HiLumi-LHC) program, the US LARP collaboration and CERN are working together to design and build 150 mm aperture $Nb_3Sn$ quadrupoles for the LHC interaction regions. A first series of 1.5 m long coils were fabricated, assembled and tested in the first short model. [...]
FERMILAB-PUB-17-008-TD.-
2017 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 27 (2017) 4001905
Fulltext: PDF;
In : Applied Superconductivity Conference, Denver, CO, USA, 4 - 9 Sep 2016, pp.4001905
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5.
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Focusing Strength Measurements of the Main Quadrupoles for the LHC
/ Smirnov, N (CERN) ; Bottura, L (CERN) ; Calvi, M (CERN) ; Deferne, G (CERN) ; Di Marco, J (Fermilab) ; Sammut, N (CERN) ; Sanfilippo, S (CERN)
More than 1100 quadrupole magnets of different types are needed for the Large Hadron Collider (LHC) which is in the construction stage at CERN. The most challenging parameter to measure on these quadrupoles is the integrated gradient (Gdl). [...]
LHC-PROJECT-Report-874; CERN-LHC-Project-Report-874.-
Geneva : CERN, 2006 - 5 p.
- Published in : IEEE Trans. Appl. Supercond. 16 (2006) 261-264
Access to fulltext document: PDF;
In : 19th International Conference on Magnet Technology, Genoa, Italy, 18 - 23 Sep 2005, pp.261-264
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6.
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Field Quality Study in Nb$_{3}$Sn Accelerator Magnets
/ Kashikhin, Vadim ; Ambrosio, Giorgio ; Andreev, Nicolai ; Barzi, Emanuela ; Bossert, R ; Di Marco, Joseph ; Kashikhin, Vladimir ; Lamm, Michael J ; Novitski, Igor ; Schlabach, Philip et al.
High field accelerator magnets are being developed at Fermilab for present and next generation hadron colliders. These magnets are designed for a nominal field of 10-12
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.366
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7.
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Restoring the Skew Quadrupole Moment in Tevatron Dipoles
/ Harding, David J ; Bauer, Pierre ; Blowers, James N ; Di Marco, Joseph ; Glass, Henry ; Hanft, Ray ; John, Carson ; Robotham, William ; Tartaglia, M ; Tompkins, John et al.
In early 2003 it was realized that mechanical changes in the Tevatron dipoles had led to a deterioration of the magnetic field quality that was hindering operation of the accelerator. After extensive study, a remediation program was started in late 2003 which will continue through 2005. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3244
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8.
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Measurements of Field Decay and Snapback Effect on Tevatron Dipole and Quadrupole Magnets
/ Velev, Gueorgui ; Ambrosio, Giorgio ; Annala, Gerald ; Bauer, Pierre ; Carcagno, Ruben H ; Di Marco, Joseph ; Glass, Henry ; Hanft, Ray ; Kephart, Robert ; Lamm, Michael J et al.
Since the beginning of 2002 an intensive measurement program has been performed at the Fermilab Magnet Test Facility to understand dynamic effects in the Tevatron magnets. Based on the results of this program a new correction algorithm was proposed to compensate for the decay of the sextupole field during the dwell at injection and for the subsequent field "snapback" during the first few seconds of the energy ramp. [...]
2005
External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2098
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9.
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Field quality measurements of the LQXB inner triplet quadrupoles for LHC
/ Velev, G V ; Bossert, Rodger Clayton ; Carcagno, R ; Di Marco, J ; Fehér, S ; Glass, H ; Kashikhin, V V ; Kerby, J ; Lamm, M J ; Makulski, A et al.
As a part of the USLHC program, Fermilab is building half of the inner triplet quadrupole magnets for the LHC. Two identical quadrupoles (MQXB) with a dipole corrector between them in a single cryogenic unit (LQXB) comprise the Q2 optical element of the final focus triplets in the interaction regions. [...]
2005
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1102-1105
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10.
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R&D of Nb$_{3}$Sn accelerator magnets at Fermilab
/ Zlobin, A V ; Ambrosio, G ; Andreev, N ; Barzi, E ; Bordini, B ; Bossert, R ; Carcagno, R ; Chichili, D R ; Di Marco, J ; Elementi, L et al.
Fermilab is developing and investigating different high-field magnets (HFM) for present and future accelerators. The HFM R&D; program focused on the 10-12 T magnets based on Nb/sub 3/Sn superconductor and explored both basic magnet technologies for brittle superconductors-wind-and-react and react-and-wind. [...]
2005
- Published in : IEEE Trans. Appl. Supercond. 15 (2005) 1113-18
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