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Title: Performance of the First Short Model 150 mm Aperture Nb3Sn Quadrupole MQXFS for the High-Luminosity LHC Upgrade

Authors:
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Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1341660
Report Number(s):
BNL-113385-2016-CP
Journal ID: ISSN 1051--8223; KA2501021
DOE Contract Number:
SC00112704
Resource Type:
Conference
Resource Relation:
Journal Volume: 27; Journal Issue: 4; Conference: Applied Superconductivity Conference ; Denver, Colorado; 20160904 through 20160909
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; Accelerator magnets; large hadron collider; Nb3Sn coils; superconducting magnets.

Citation Formats

Chlachidze G., Anerella M., Ambrosio, G., Bossert, R., Cavanna, E., Cheng, D., Dietderich, D., DiMarco, J., Felice, H., Ferracin, P., Ghosh, A., Grosclaude, P., Guinchard, M., Hafalia, A. R., Holik, E., Izquierdo Bermudez, S., Krave, S., Marchevsky, M., Nobrega, F., Orris, D., Pan, H., Perez, J. C., Prestemon, S., Ravaioli, E., Sabbi, G., Salmi, T., Schmalzle, J., Stoynev, S., Strauss, T., Sylvester, C., Tartaglia, M., Todesco, E., Vallone, G., Velev, G., Wanderer, P., Wang, X., and Yu, M. Performance of the First Short Model 150 mm Aperture Nb3Sn Quadrupole MQXFS for the High-Luminosity LHC Upgrade. United States: N. p., 2016. Web. doi:10.1109/TASC.2016.2629001.
Chlachidze G., Anerella M., Ambrosio, G., Bossert, R., Cavanna, E., Cheng, D., Dietderich, D., DiMarco, J., Felice, H., Ferracin, P., Ghosh, A., Grosclaude, P., Guinchard, M., Hafalia, A. R., Holik, E., Izquierdo Bermudez, S., Krave, S., Marchevsky, M., Nobrega, F., Orris, D., Pan, H., Perez, J. C., Prestemon, S., Ravaioli, E., Sabbi, G., Salmi, T., Schmalzle, J., Stoynev, S., Strauss, T., Sylvester, C., Tartaglia, M., Todesco, E., Vallone, G., Velev, G., Wanderer, P., Wang, X., & Yu, M. Performance of the First Short Model 150 mm Aperture Nb3Sn Quadrupole MQXFS for the High-Luminosity LHC Upgrade. United States. doi:10.1109/TASC.2016.2629001.
Chlachidze G., Anerella M., Ambrosio, G., Bossert, R., Cavanna, E., Cheng, D., Dietderich, D., DiMarco, J., Felice, H., Ferracin, P., Ghosh, A., Grosclaude, P., Guinchard, M., Hafalia, A. R., Holik, E., Izquierdo Bermudez, S., Krave, S., Marchevsky, M., Nobrega, F., Orris, D., Pan, H., Perez, J. C., Prestemon, S., Ravaioli, E., Sabbi, G., Salmi, T., Schmalzle, J., Stoynev, S., Strauss, T., Sylvester, C., Tartaglia, M., Todesco, E., Vallone, G., Velev, G., Wanderer, P., Wang, X., and Yu, M. 2016. "Performance of the First Short Model 150 mm Aperture Nb3Sn Quadrupole MQXFS for the High-Luminosity LHC Upgrade". United States. doi:10.1109/TASC.2016.2629001. https://www.osti.gov/servlets/purl/1341660.
@article{osti_1341660,
title = {Performance of the First Short Model 150 mm Aperture Nb3Sn Quadrupole MQXFS for the High-Luminosity LHC Upgrade},
author = {Chlachidze G. and Anerella M. and Ambrosio, G. and Bossert, R. and Cavanna, E. and Cheng, D. and Dietderich, D. and DiMarco, J. and Felice, H. and Ferracin, P. and Ghosh, A. and Grosclaude, P. and Guinchard, M. and Hafalia, A. R. and Holik, E. and Izquierdo Bermudez, S. and Krave, S. and Marchevsky, M. and Nobrega, F. and Orris, D. and Pan, H. and Perez, J. C. and Prestemon, S. and Ravaioli, E. and Sabbi, G. and Salmi, T. and Schmalzle, J. and Stoynev, S. and Strauss, T. and Sylvester, C. and Tartaglia, M. and Todesco, E. and Vallone, G. and Velev, G. and Wanderer, P. and Wang, X. and Yu, M.},
abstractNote = {},
doi = {10.1109/TASC.2016.2629001},
journal = {},
number = 4,
volume = 27,
place = {United States},
year = 2016,
month = 9
}

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  • The US LHC Accelerator Research Program (LARP) and CERN combined their efforts in developing Nb3Sn magnets for the High-Luminosity LHC upgrade. The ultimate goal of this collaboration is to fabricate large aperture Nb3Sn quadrupoles for the LHC interaction regions (IR). These magnets will replace the present 70 mm aperture NbTi quadrupole triplets for expected increase of the LHC peak luminosity by a factor of 5. Over the past decade LARP successfully fabricated and tested short and long models of 90 mm and 120 mm aperture Nb3Sn quadrupoles. Recently the first short model of 150 mm diameter quadrupole MQXFS was builtmore » with coils fabricated both by the LARP and CERN. The magnet performance was tested at Fermilab’s vertical magnet test facility. This paper reports the test results, including the quench training at 1.9 K, ramp rate and temperature dependence studies.« less
  • The development ofmore » $$Nb_3Sn$$ quadrupole magnets for the High-Luminosity LHC upgrade is a joint venture between the US LHC Accelerator Research Program (LARP)* and CERN with the goal of fabricating large aperture quadrupoles for the LHC in-teraction regions (IR). The inner triplet (low-β) NbTi quadrupoles in the IR will be replaced by the stronger Nb3Sn magnets boosting the LHC program of having 10-fold increase in integrated luminos-ity after the foreseen upgrades. Previously LARP conducted suc-cessful tests of short and long models with up to 120 mm aperture. The first short 150 mm aperture quadrupole model MQXFS1 was assembled with coils fabricated by both CERN and LARP. The magnet demonstrated strong performance at the Fermilab’s verti-cal magnet test facility reaching the LHC operating limits. This paper reports the latest results from MQXFS1 tests with changed pre-stress levels. The overall magnet performance, including quench training and memory, ramp rate and temperature depend-ence, is also summarized.« less
  • The US LHC Accelerator Research Program (LARP) and CERN are developing high-gradient Nb 3Sn magnets for the High Luminosity LHC interaction regions. Magnetic measurements of the first 1.5 m long, 150 mm aperture model quadrupole, MQXFS1, were performed during magnet assembly at LBNL, as well as during cryogenic testing at Fermilab’s Vertical Magnet Test Facility. This paper reports on the results of these magnetic characterization measurements, as well as on the performance of new probes developed for the tests.
  • Double-aperture Nb{sub 3}Sn quadrupoles with asymmetric coils and with cold and warm iron yokes were studied for the dipole-first upgrade scenario of the LHC Interaction Regions (IR). This paper describes the magnet design concepts and discusses their performance parameters, including field gradient and field quality limitations.
  • The High Luminosity upgrade of the LHC at CERN will use large aperture (150 mm) quadrupole magnets to focus the beams at the interaction points. The high field in the coils requires Nb3Sn superconductor technology, which has been brought to maturity by the LHC Accelerator Re-search Program (LARP) over the last 10 years. The key design targets for the new IR quadrupoles were established in 2012, and fabrication of model magnets started in 2014. This paper discusses the results from the first single short coil test and from the first short quadrupole model test. Remaining challenges and plans to addressmore » them are also presented and discussed.« less