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Title: A Full-length Quench Antenna for MQXFA Production Series Quadrupole Magnet Testing

Abstract

The MQXFA production series quadrupoles being built for the Hi-Lumi (HL) LHC upgrade by the US Accelerator Upgrade Project (US-HL-LHC AUP) will have very limited instrumentation for characterizing quench events that occur during magnet training and performance validation testing. In order to understand the origin of the quenches, and whether they have some implication for ongoing magnet fabrication, it was decided to build a full-length Quench Antenna (QA) with axial resolution of 50mm to be employed during cold testing in the anticryostat used for magnetic measurements. The goal is to have fineresolution, full-length coverage detection of quench events axially, as well as to have azimuthal resolution on the order of the cable width (about 1 degree for the cross-section), in a device that can be used both for vertical and horizontal testing. To achieve this, a 5m long QA with 128 channels of high-speed data acquisition has been designed and fabricated. The cylindrical antenna features an array of 12 full-length, dipole- and quadrupole-bucked coils positioned radially in the QA interior for azimuthal localization, and over 100 individual channels of short, high-sensitivity, antennas etched as flexible PCB circuits (which also buck dipole and quadrupole fields) wrapped circumferentially on the cylinder exteriormore » in steps of 50mm along the magnet length for axial detection. This report discusses the design, construction and analysis of the MQXFA QA, and first results from using the antenna during quench testing in the production magnets.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [2];  [2]; ORCiD logo [1];  [2]; ORCiD logo [2]; ORCiD logo [1]; ORCiD logo [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
HiLumiAUP
OSTI Identifier:
1769390
Report Number(s):
FERMILAB-CONF-20-623-TD
Journal ID: ISSN 1051-8223; oai:inspirehep.net:1848151; TRN: US2206746
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Applied Superconductivity
Additional Journal Information:
Journal Volume: 31; Journal Issue: 5; Journal ID: ISSN 1051-8223
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Magnetic field measurement; quench antenna; quench detection; quench characterization; circuit board probe; accelerator magnets; antenna arrays; data acquisition; superconducting coils; superconducting magnets; full-length quench antenna array; production magnets; quench testing; MQXFA QAA; horizontal testing; vertical testing; azimuthal resolution; full-length coverage detection; cold testing; axial resolution; magnet training; US-HL-LHC AUP; US Accelerator Upgrade Project; Hi-Lumi LHC upgrade; MQXFA production series quadrupole magnet testing

Citation Formats

DiMarco, J., Ambrosio, G., Amm, K., Anerella, M., Feher, S., Joshi, P., Muratore, J., Stroynev, S., and Strauss, T. A Full-length Quench Antenna for MQXFA Production Series Quadrupole Magnet Testing. United States: N. p., 2021. Web. doi:10.1109/tasc.2021.3068933.
DiMarco, J., Ambrosio, G., Amm, K., Anerella, M., Feher, S., Joshi, P., Muratore, J., Stroynev, S., & Strauss, T. A Full-length Quench Antenna for MQXFA Production Series Quadrupole Magnet Testing. United States. https://doi.org/10.1109/tasc.2021.3068933
DiMarco, J., Ambrosio, G., Amm, K., Anerella, M., Feher, S., Joshi, P., Muratore, J., Stroynev, S., and Strauss, T. Tue . "A Full-length Quench Antenna for MQXFA Production Series Quadrupole Magnet Testing". United States. https://doi.org/10.1109/tasc.2021.3068933. https://www.osti.gov/servlets/purl/1769390.
@article{osti_1769390,
title = {A Full-length Quench Antenna for MQXFA Production Series Quadrupole Magnet Testing},
author = {DiMarco, J. and Ambrosio, G. and Amm, K. and Anerella, M. and Feher, S. and Joshi, P. and Muratore, J. and Stroynev, S. and Strauss, T.},
abstractNote = {The MQXFA production series quadrupoles being built for the Hi-Lumi (HL) LHC upgrade by the US Accelerator Upgrade Project (US-HL-LHC AUP) will have very limited instrumentation for characterizing quench events that occur during magnet training and performance validation testing. In order to understand the origin of the quenches, and whether they have some implication for ongoing magnet fabrication, it was decided to build a full-length Quench Antenna (QA) with axial resolution of 50mm to be employed during cold testing in the anticryostat used for magnetic measurements. The goal is to have fineresolution, full-length coverage detection of quench events axially, as well as to have azimuthal resolution on the order of the cable width (about 1 degree for the cross-section), in a device that can be used both for vertical and horizontal testing. To achieve this, a 5m long QA with 128 channels of high-speed data acquisition has been designed and fabricated. The cylindrical antenna features an array of 12 full-length, dipole- and quadrupole-bucked coils positioned radially in the QA interior for azimuthal localization, and over 100 individual channels of short, high-sensitivity, antennas etched as flexible PCB circuits (which also buck dipole and quadrupole fields) wrapped circumferentially on the cylinder exterior in steps of 50mm along the magnet length for axial detection. This report discusses the design, construction and analysis of the MQXFA QA, and first results from using the antenna during quench testing in the production magnets.},
doi = {10.1109/tasc.2021.3068933},
journal = {IEEE Transactions on Applied Superconductivity},
number = 5,
volume = 31,
place = {United States},
year = {Tue Mar 30 00:00:00 EDT 2021},
month = {Tue Mar 30 00:00:00 EDT 2021}
}

Works referenced in this record:

Application of PCB and FDM Technologies to Magnetic Measurement Probe System Development
journal, June 2013

  • DiMarco, J.; Chlachidze, G.; Makulski, A.
  • IEEE Transactions on Applied Superconductivity, Vol. 23, Issue 3
  • DOI: 10.1109/TASC.2012.2236596