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Title: Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-β Quadrupole for the High-Luminosity LHC Upgrade

Abstract

The $${\rm Nb_{3}Sn}$$low-$$\beta$$quadrupole MQXF is being developed as a part of the High-Luminosity large hadron collider (LHC) upgrade project. The magnet will be produced in two different configurations, sharing the same cross section but with different lengths. A 7.2-m mechanical model of MQXFB was recently assembled at european organization for nuclear research (CERN) with one copper coil, two low-grade coils, and one rejected coil. Coil dimensions were measured with a portable coordinate measurement machine. The coil pack shimming was designed in order to optimize the field quality and the contacts between the coils and the collars. The azimuthal preload target was defined using the short models experience. The mechanical behavior during loading was monitored by means of strain gauges. The results demonstrated that the structure can provide the required prestress to the coils.

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [3]; ORCiD logo [1];  [3];  [3];  [3]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [3]; ORCiD logo [1];  [3]; ORCiD logo [1];  [3];  [3]
  1. LBL, Berkeley
  2. Fermilab
  3. CERN
Publication Date:
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) (SC-25)
OSTI Identifier:
1498557
Report Number(s):
FERMILAB-PUB-19-053-TD
1719277
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Journal Article
Journal Name:
IEEE Trans.Appl.Supercond.
Additional Journal Information:
Journal Volume: 29; Journal Issue: 5
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Vallone, Giorgio, Ambrosio, Giorgio, Anderssen, Eric, Bourcey, Nicolas, Cheng, Daniel W., Ferracin, Paolo, Grosclaude, Philippe, Guinchard, Michael, Izquierdo Bermudez, Susana, Juchno, Mariusz, Lackner, Friedrich, Pan, Heng, Perez, Juan Carlos, Prestemon, Soren, Semeraro, Michela, and Triquet, Stephane. Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-β Quadrupole for the High-Luminosity LHC Upgrade. United States: N. p., 2019. Web. doi:10.1109/TASC.2019.2892126.
Vallone, Giorgio, Ambrosio, Giorgio, Anderssen, Eric, Bourcey, Nicolas, Cheng, Daniel W., Ferracin, Paolo, Grosclaude, Philippe, Guinchard, Michael, Izquierdo Bermudez, Susana, Juchno, Mariusz, Lackner, Friedrich, Pan, Heng, Perez, Juan Carlos, Prestemon, Soren, Semeraro, Michela, & Triquet, Stephane. Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-β Quadrupole for the High-Luminosity LHC Upgrade. United States. doi:10.1109/TASC.2019.2892126.
Vallone, Giorgio, Ambrosio, Giorgio, Anderssen, Eric, Bourcey, Nicolas, Cheng, Daniel W., Ferracin, Paolo, Grosclaude, Philippe, Guinchard, Michael, Izquierdo Bermudez, Susana, Juchno, Mariusz, Lackner, Friedrich, Pan, Heng, Perez, Juan Carlos, Prestemon, Soren, Semeraro, Michela, and Triquet, Stephane. Thu . "Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-β Quadrupole for the High-Luminosity LHC Upgrade". United States. doi:10.1109/TASC.2019.2892126. https://www.osti.gov/servlets/purl/1498557.
@article{osti_1498557,
title = {Assembly of a Mechanical Model of MQXFB, the 7.2-m-Long Low-β Quadrupole for the High-Luminosity LHC Upgrade},
author = {Vallone, Giorgio and Ambrosio, Giorgio and Anderssen, Eric and Bourcey, Nicolas and Cheng, Daniel W. and Ferracin, Paolo and Grosclaude, Philippe and Guinchard, Michael and Izquierdo Bermudez, Susana and Juchno, Mariusz and Lackner, Friedrich and Pan, Heng and Perez, Juan Carlos and Prestemon, Soren and Semeraro, Michela and Triquet, Stephane},
abstractNote = {The ${\rm Nb_{3}Sn}$low-$\beta$quadrupole MQXF is being developed as a part of the High-Luminosity large hadron collider (LHC) upgrade project. The magnet will be produced in two different configurations, sharing the same cross section but with different lengths. A 7.2-m mechanical model of MQXFB was recently assembled at european organization for nuclear research (CERN) with one copper coil, two low-grade coils, and one rejected coil. Coil dimensions were measured with a portable coordinate measurement machine. The coil pack shimming was designed in order to optimize the field quality and the contacts between the coils and the collars. The azimuthal preload target was defined using the short models experience. The mechanical behavior during loading was monitored by means of strain gauges. The results demonstrated that the structure can provide the required prestress to the coils.},
doi = {10.1109/TASC.2019.2892126},
journal = {IEEE Trans.Appl.Supercond.},
number = 5,
volume = 29,
place = {United States},
year = {2019},
month = {1}
}

Journal Article:

Figures / Tables:

Figure 1 Figure 1: MQXF cross-section (top), and MQXFB longitudinal view (bottom). The strain gauges were installed on the shell and the winding poles, as shown by the circular markers. The vertical lines in the bottom view provide their longitudinal position.

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