Field Quality Measurement of a 4.2-m-Long Prototype Low- $$\beta$$ Nb $$_3$$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project
Abstract
The U.S. High-Luminosity LHC Accelerator Upgrade Project, in collaboration with CERN, is developing Nb$$_3$$Sn quadrupole magnets (MQXFA) to be installed at the interaction region of the LHC. The project will deliver 20 MQXFA magnets in 10 cold masses. These magnets need to meet the stringent requirements on field quality at the nominal operating current. Compared to the mature NbTi accelerator magnet technology, achieving excellent field quality can be challenging for Nb$$_3$$Sn magnets. To help track, understand, and allow effective correction of geometric field errors, field quality measurements at room temperature during the MQXFA assembly stage was planned for the project. The measurements also intend to evaluate the magnetic axis and twist angle along the magnet aperture. We report the first measurement on a prototype MQXFA magnet using a recently developed measurement system. The magnetic axis and twist angle met the acceptance criteria. Further development needs for the room-temperature measurements were discussed. We expect that statistics obtained from such measurements throughout the project will provide insight into future applications of high-performance Nb$$_3$$Sn accelerator magnets.
- Authors:
-
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- 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)
- OSTI Identifier:
- 1497669
- Alternate Identifier(s):
- OSTI ID: 1498556
- Report Number(s):
- FERMILAB-PUB-19-058-TD
Journal ID: ISSN 1051-8223; ark:/13030/qt6fb9v14s
- Grant/Contract Number:
- AC02-05CH11231; AC02-07CH11359
- Resource Type:
- Accepted Manuscript
- Journal Name:
- IEEE Transactions on Applied Superconductivity
- Additional Journal Information:
- Journal Volume: 29; Journal Issue: 5; Journal ID: ISSN 1051-8223
- Publisher:
- Institute of Electrical and Electronics Engineers (IEEE)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Nb $_3$ Sn accelerator magnets; field quality; High-Luminosity LHC Upgrade Project; 43 PARTICLE ACCELERATORS
Citation Formats
Wang, Xiaorong, Ambrosio, Giorgio F., Cheng, Daniel W., Chlachidze, Guram, DiMarco, Joseph, Ghiorso, William, Hernikl, Christopher, Lipton, Thomas M., Myers, Scott, Pan, Heng, Prestemon, Soren O., and Sabbi, GianLuca. Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project. United States: N. p., 2019.
Web. doi:10.1109/TASC.2019.2892119.
Wang, Xiaorong, Ambrosio, Giorgio F., Cheng, Daniel W., Chlachidze, Guram, DiMarco, Joseph, Ghiorso, William, Hernikl, Christopher, Lipton, Thomas M., Myers, Scott, Pan, Heng, Prestemon, Soren O., & Sabbi, GianLuca. Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project. United States. https://doi.org/10.1109/TASC.2019.2892119
Wang, Xiaorong, Ambrosio, Giorgio F., Cheng, Daniel W., Chlachidze, Guram, DiMarco, Joseph, Ghiorso, William, Hernikl, Christopher, Lipton, Thomas M., Myers, Scott, Pan, Heng, Prestemon, Soren O., and Sabbi, GianLuca. Fri .
"Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project". United States. https://doi.org/10.1109/TASC.2019.2892119. https://www.osti.gov/servlets/purl/1497669.
@article{osti_1497669,
title = {Field Quality Measurement of a 4.2-m-Long Prototype Low- $\beta$ Nb $_3$ Sn Quadrupole Magnet During the Assembly Stage for the High-Luminosity LHC Accelerator Upgrade Project},
author = {Wang, Xiaorong and Ambrosio, Giorgio F. and Cheng, Daniel W. and Chlachidze, Guram and DiMarco, Joseph and Ghiorso, William and Hernikl, Christopher and Lipton, Thomas M. and Myers, Scott and Pan, Heng and Prestemon, Soren O. and Sabbi, GianLuca},
abstractNote = {The U.S. High-Luminosity LHC Accelerator Upgrade Project, in collaboration with CERN, is developing Nb$_3$Sn quadrupole magnets (MQXFA) to be installed at the interaction region of the LHC. The project will deliver 20 MQXFA magnets in 10 cold masses. These magnets need to meet the stringent requirements on field quality at the nominal operating current. Compared to the mature NbTi accelerator magnet technology, achieving excellent field quality can be challenging for Nb$_3$Sn magnets. To help track, understand, and allow effective correction of geometric field errors, field quality measurements at room temperature during the MQXFA assembly stage was planned for the project. The measurements also intend to evaluate the magnetic axis and twist angle along the magnet aperture. We report the first measurement on a prototype MQXFA magnet using a recently developed measurement system. The magnetic axis and twist angle met the acceptance criteria. Further development needs for the room-temperature measurements were discussed. We expect that statistics obtained from such measurements throughout the project will provide insight into future applications of high-performance Nb$_3$Sn accelerator magnets.},
doi = {10.1109/TASC.2019.2892119},
journal = {IEEE Transactions on Applied Superconductivity},
number = 5,
volume = 29,
place = {United States},
year = {Fri Jan 18 00:00:00 EST 2019},
month = {Fri Jan 18 00:00:00 EST 2019}
}
Web of Science