Fabrication and test of 4m long Nb3Sn quadrupole coil made of RRP-114-127 strand

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Fermilab is collaborating with LBNL and BNL (US-LARP collaboration) to develop a large-aperture Nb{sub 3}Sn superconducting quadrupole for the Large Hadron Collider (LHC) luminosity upgrade. Several two-layer quadrupole models of the 1-meter and 3.4-meter length with 90mm apertures have been fabricated and tested by the US-LARP collaboration. High-Jc RRP-54/61 strand was used for nearly all models. Large flux jumps typical for this strand due to the large sub-element diameter limited magnet quench performance at temperatures below 2.5-3K. This paper summarizes the fabrication and test by Fermilab of LQM01, a long quadrupole coil test structure (quadrupole mirror) with the first 3.4m ... continued below

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8 pages

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Bossert, R.; Ambrosio, G.; Andreev, N.; Barzi, E.; Chlachidze, G.; Kashikhin, V.V. et al. June 1, 2011.

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Fermilab is collaborating with LBNL and BNL (US-LARP collaboration) to develop a large-aperture Nb{sub 3}Sn superconducting quadrupole for the Large Hadron Collider (LHC) luminosity upgrade. Several two-layer quadrupole models of the 1-meter and 3.4-meter length with 90mm apertures have been fabricated and tested by the US-LARP collaboration. High-Jc RRP-54/61 strand was used for nearly all models. Large flux jumps typical for this strand due to the large sub-element diameter limited magnet quench performance at temperatures below 2.5-3K. This paper summarizes the fabrication and test by Fermilab of LQM01, a long quadrupole coil test structure (quadrupole mirror) with the first 3.4m quadrupole coil made of more stable RRP-114/127 strand. The coil and structure are fully instrumented with voltage taps, full bridge strain gauges and strip heaters to monitor preload, thermal properties and quench behavior. Measurements during fabrication are reported, including preload during the yoke welding process. Testing is done at 4.5K, 1.9K and a range of intermediate temperatures. The test results include magnet strain and quench performance during training, as well as quench studies of current ramp rate and temperature dependence from 1.9K to 4.5K.

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8 pages

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  • Journal Name: Submitted to Adv.Cryog.Eng.; Conference: Presented at Cryogenic Engineering Conference and International Cryogenic Materials Conference CEC-ICMC 2011, Spokane, Washington, 13-17 June 2011

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  • Report No.: FERMILAB-CONF-11-266-TD
  • Grant Number: AC02-07CH11359
  • Office of Scientific & Technical Information Report Number: 1023518
  • Archival Resource Key: ark:/67531/metadc847048

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Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • June 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 29, 2016, 8:09 p.m.

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Bossert, R.; Ambrosio, G.; Andreev, N.; Barzi, E.; Chlachidze, G.; Kashikhin, V.V. et al. Fabrication and test of 4m long Nb3Sn quadrupole coil made of RRP-114-127 strand, article, June 1, 2011; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc847048/: accessed June 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.