Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC

Vallone, Giorgio; Ambrosio, Giorgio; Anderssen, Eric; Bourcey, Nicolas; Cheng, Daniel W.; Felice, Helene; Ferracin, Paolo; Fichera, Claudio; Grosclaude, Philippe; Guinchard, Michael; Juchno, Mariusz; Pan, Heng; Perez, Juan Carlos; Prestemon, Soren

doi:10.1109/TASC.2016.2645133

Title: Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC

Abstract

In the framework of the Hi-Lumi LHC Project, CERN and U.S. LARP are jointly developing MQXF, a 150-mm aperture high-field Nb3Sn quadrupole for the upgrade of the inner triplet of the low-beta interaction regions. The magnet is supported by a shell-based structure, providing the preload by means of bladder-key technology and differential thermal contraction of the various components. Two short models have been produced using the same cross section currently considered for the final magnet. The structures were preliminarily tested replacing the superconducting coils with blocks of aluminum. This procedure allows for model validation and calibration, and also to set performance goals for the real magnet. Strain gauges were used to monitor the behavior of the structure during assembly, cool down and also excitation in the case of the magnets. The various structures differ for the shell partitioning strategies adopted and for the presence of thick or thin laminations. This paper presents the results obtained and discusses the mechanical performance of all the short models produced up to now.

Authors:

^[1];

^[2]; Anderssen, Eric ^[3]; Bourcey, Nicolas ^[1]; Cheng, Daniel W. ^[3]; Felice, Helene ^[4]; Ferracin, Paolo ^[1]; Fichera, Claudio ^[1]; Grosclaude, Philippe ^[1]; Guinchard, Michael ^[1]; Juchno, Mariusz ^[3]; Pan, Heng ^[3]; Perez, Juan Carlos ^[1]; Prestemon, Soren ^[3]

European Organization for Nuclear Research, Geneva (Switzerland)
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
French Atomic Energy Commission, Saclay (France)

Publication Date:: 2016-12-23

Research Org.:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1365577

Alternate Identifier(s):: OSTI ID: 1561876

Report Number(s):: FERMILAB-PUB-17-200-TD
Journal ID: ISSN 1051-8223; 1594854; TRN: US1702189

Grant/Contract Number:: AC02-07CH11359; AC02-05CH11231

Resource Type:: Accepted Manuscript

Journal Name:: IEEE Transactions on Applied Superconductivity

Additional Journal Information:: Journal Volume: 27; Journal Issue: 4; Journal ID: ISSN 1051-8223

Publisher:: Institute of Electrical and Electronics Engineers (IEEE)

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; Hi-Lumi LHC; LARP; Nb3Sn magnet; quadrupole; short model

Citation Formats


                    Vallone, Giorgio, Ambrosio, Giorgio, Anderssen, Eric, Bourcey, Nicolas, Cheng, Daniel W., Felice, Helene, Ferracin, Paolo, Fichera, Claudio, Grosclaude, Philippe, Guinchard, Michael, Juchno, Mariusz, Pan, Heng, Perez, Juan Carlos, and Prestemon, Soren. Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC.  United States: N. p., 2016. 
Web.  doi:10.1109/TASC.2016.2645133.

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                    Vallone, Giorgio, Ambrosio, Giorgio, Anderssen, Eric, Bourcey, Nicolas, Cheng, Daniel W., Felice, Helene, Ferracin, Paolo, Fichera, Claudio, Grosclaude, Philippe, Guinchard, Michael, Juchno, Mariusz, Pan, Heng, Perez, Juan Carlos, & Prestemon, Soren. Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC.  United States.  https://doi.org/10.1109/TASC.2016.2645133

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                    Vallone, Giorgio, Ambrosio, Giorgio, Anderssen, Eric, Bourcey, Nicolas, Cheng, Daniel W., Felice, Helene, Ferracin, Paolo, Fichera, Claudio, Grosclaude, Philippe, Guinchard, Michael, Juchno, Mariusz, Pan, Heng, Perez, Juan Carlos, and Prestemon, Soren. Fri .  
"Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC".  United States.  https://doi.org/10.1109/TASC.2016.2645133.  https://www.osti.gov/servlets/purl/1365577.

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@article{osti_1365577,

  title        = {Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC},

  author       = {Vallone, Giorgio and Ambrosio, Giorgio and Anderssen, Eric and Bourcey, Nicolas and Cheng, Daniel W. and Felice, Helene and Ferracin, Paolo and Fichera, Claudio and Grosclaude, Philippe and Guinchard, Michael and Juchno, Mariusz and Pan, Heng and Perez, Juan Carlos and Prestemon, Soren},

  abstractNote = {In the framework of the Hi-Lumi LHC Project, CERN and U.S. LARP are jointly developing MQXF, a 150-mm aperture high-field Nb3Sn quadrupole for the upgrade of the inner triplet of the low-beta interaction regions. The magnet is supported by a shell-based structure, providing the preload by means of bladder-key technology and differential thermal contraction of the various components. Two short models have been produced using the same cross section currently considered for the final magnet. The structures were preliminarily tested replacing the superconducting coils with blocks of aluminum. This procedure allows for model validation and calibration, and also to set performance goals for the real magnet. Strain gauges were used to monitor the behavior of the structure during assembly, cool down and also excitation in the case of the magnets. The various structures differ for the shell partitioning strategies adopted and for the presence of thick or thin laminations. This paper presents the results obtained and discusses the mechanical performance of all the short models produced up to now.},

  doi          = {10.1109/TASC.2016.2645133},

  journal      = {IEEE Transactions on Applied Superconductivity},

  number       = 4,

  volume       = 27,

  place        = {United States},

  year         = {2016},

  month        = {12}

}

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Works referencing / citing this record:

Mechanical analysis of the Nb ₃ Sn 11 T dipole short models for the High Luminosity Large Hadron Collider
journal, July 2019

Izquierdo Bermudez, S.; Nilsson, E.; Bottura, L.
Superconductor Science and Technology, Vol. 32, Issue 8
DOI: 10.1088/1361-6668/ab1f39

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Title: Mechanical performance of short models for MQXF, the Nb3Sn low-β quadrupole for the Hi-Lumi LHC

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Mechanical analysis of the Nb ₃ Sn 11 T dipole short models for the High Luminosity Large Hadron Collider
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