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Title: Quench performance and field quality of FNAL twin-aperture 11 T Nb 3Sn dipole model for LHC upgrades

A 2 m long single-aperture dipole demonstrator and two 1 m long single-aperture models based on Nb 3Sn superconductor have been built and tested at FNAL. The two 1 m long collared coils were then assembled in a twin-aperture Nb 3Sn dipole demonstrator compatible with the LHC main dipole and tested in two thermal cycles. This paper summarizes the quench performance of the FNAL twin-aperture Nb 3Sn 11 T dipole in the temperature range of 1.9-4.5 K. The results of magnetic measurements for one of the two apertures are also presented. Test results are compared to the performance of coils in a single-aperture configuration. Lastly, a summary of quench propagation studies in both apertures is given.
Authors:
ORCiD logo [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [1] ;  [1] ;  [2] ;  [2] ;  [2] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
  2. European Organization for Nuclear Research (CERN), Geneva (Switzerland)
Publication Date:
Report Number(s):
FERMILAB-CONF-16-341-TD
Journal ID: ISSN 1051-8223; 1501395
Grant/Contract Number:
AC02-07CH11359
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)
Research Org:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; accelerator magnets; Large Hadron Collider; superconducting coils; magnet design; magnetic measurements; quench performance
OSTI Identifier:
1334260

Stoynev, Stoyan, Andreev, Nikolai, Apollinari, Giorgio, Auchmann, Bernhard, Barzi, Emanuela, Bermudez, Susana Izquierdo, Bossert, Rodger, Chlachidze, Guram, DiMarco, Joseph, Karppinen, Mikko, Nobrega, Alfred, Novitski, Igor, Rossi, Lucio, Savary, Frederic, Smekens, David, Strauss, Thomas, Turrioni, Daniele, Velev, Gueorgui V., and Zlobin, Alexander V.. Quench performance and field quality of FNAL twin-aperture 11 T Nb3Sn dipole model for LHC upgrades. United States: N. p., Web. doi:10.1109/TASC.2016.2634524.
Stoynev, Stoyan, Andreev, Nikolai, Apollinari, Giorgio, Auchmann, Bernhard, Barzi, Emanuela, Bermudez, Susana Izquierdo, Bossert, Rodger, Chlachidze, Guram, DiMarco, Joseph, Karppinen, Mikko, Nobrega, Alfred, Novitski, Igor, Rossi, Lucio, Savary, Frederic, Smekens, David, Strauss, Thomas, Turrioni, Daniele, Velev, Gueorgui V., & Zlobin, Alexander V.. Quench performance and field quality of FNAL twin-aperture 11 T Nb3Sn dipole model for LHC upgrades. United States. doi:10.1109/TASC.2016.2634524.
Stoynev, Stoyan, Andreev, Nikolai, Apollinari, Giorgio, Auchmann, Bernhard, Barzi, Emanuela, Bermudez, Susana Izquierdo, Bossert, Rodger, Chlachidze, Guram, DiMarco, Joseph, Karppinen, Mikko, Nobrega, Alfred, Novitski, Igor, Rossi, Lucio, Savary, Frederic, Smekens, David, Strauss, Thomas, Turrioni, Daniele, Velev, Gueorgui V., and Zlobin, Alexander V.. 2016. "Quench performance and field quality of FNAL twin-aperture 11 T Nb3Sn dipole model for LHC upgrades". United States. doi:10.1109/TASC.2016.2634524. https://www.osti.gov/servlets/purl/1334260.
@article{osti_1334260,
title = {Quench performance and field quality of FNAL twin-aperture 11 T Nb3Sn dipole model for LHC upgrades},
author = {Stoynev, Stoyan and Andreev, Nikolai and Apollinari, Giorgio and Auchmann, Bernhard and Barzi, Emanuela and Bermudez, Susana Izquierdo and Bossert, Rodger and Chlachidze, Guram and DiMarco, Joseph and Karppinen, Mikko and Nobrega, Alfred and Novitski, Igor and Rossi, Lucio and Savary, Frederic and Smekens, David and Strauss, Thomas and Turrioni, Daniele and Velev, Gueorgui V. and Zlobin, Alexander V.},
abstractNote = {A 2 m long single-aperture dipole demonstrator and two 1 m long single-aperture models based on Nb3Sn superconductor have been built and tested at FNAL. The two 1 m long collared coils were then assembled in a twin-aperture Nb3Sn dipole demonstrator compatible with the LHC main dipole and tested in two thermal cycles. This paper summarizes the quench performance of the FNAL twin-aperture Nb3Sn 11 T dipole in the temperature range of 1.9-4.5 K. The results of magnetic measurements for one of the two apertures are also presented. Test results are compared to the performance of coils in a single-aperture configuration. Lastly, a summary of quench propagation studies in both apertures is given.},
doi = {10.1109/TASC.2016.2634524},
journal = {IEEE Transactions on Applied Superconductivity},
number = 4,
volume = 27,
place = {United States},
year = {2016},
month = {12}
}