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1.
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;
2.
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
3.
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
4.
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
5.
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
6.
The Construction of the Low-beta Triplets for the LHC / CERN-Fermilab-KEK Collaboration
The performance of the LHC depends critically on the low-b triplets, located on either side of the four interaction points. Each triplet consists of four superconducting quadrupole magnets, which must operate reliably at up to 215 T/m, sustain high heat loads and have an excellent field quality. [...]
LHC-Project-Report-836; CERN-LHC-Project-Report-836.- Geneva : CERN, 2005 - 4 p. Access to fulltext document: PDF; External link: Published version from JACoW
In : 21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.2798

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