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CEC-ICMC 2015 - Timetable, Abstracts and Presentations

28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

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Session

M1OrC - Superconductor Stability and AC Losses

M1OrC
29 Jun 2015, 16:00
JW Marriott Starr Pass Resort

JW Marriott Starr Pass Resort

Tucson, Arizona USA

Conveners

M1OrC - Superconductor Stability and AC Losses

  • Naoyuki Amemiya (Kyoto University)
  • Francesco Grilli (Karlsruhe Institute of Technology)

Presentation materials

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  1. 483. [Invited] Effectiveness of laser striation for AC loss reduction in SuperOx coated conductor.
    Dr Anna Kario (Karlsruhe Institute of Technology, Institute for Technical Physics)
    29/06/2015, 16:00
    ICMC-08 - Superconductor Stability and AC Losses
    Invited Oral Presentation
    The physical properties of REBCO (RE=rare earth) high temperature superconductors require a flat tape architecture enabling them to carry high current densities. This architecture has an enormous ratio between the width and the thickness of the tape, typically ranging between 1,000 and 10,000. This very large aspect ratio has a detrimental effect on the AC losses, specifically the losses...
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  2. 179. Electromagnetic behavior of striated coated conductors wound into pancake coils
    Prof. Naoyuki Amemiya (Kyoto University)
    29/06/2015, 16:30
    ICMC-08 - Superconductor Stability and AC Losses
    Contributed Oral Presentation
    Large magnetization of coated conductors is one of the most serious concerns of their applications to MRI or NMR magnets, because it deteriorate the uniformity and stability of the magnetic fields. As the counter measure against large magnetization, the striation of coated conductors was proposed, and its effect was demonstrated in small coils. Even if filaments (narrow conductor strips in a...
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  3. 407. Calorimetric Measurements of AC losses in HTS coils and tapes in a Stator Environment
    John Murphy (University of dayton Research Institute), Dr Timothy Haugan (USAF)
    29/06/2015, 16:45
    ICMC-08 - Superconductor Stability and AC Losses
    Contributed Oral Presentation
    Long HTS tapes have been fabricated in a variety of formats for the purpose of reducing the sensitivity to AC magnetic fields, from both conducted AC and external fields. Some of the conductors have been made more resistant to AC losses by HTS film composition and many others have been based on geometric arrangements of the conductors, such as different filament patterns in striated tapes, and...
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  4. 187. Pulsed field stability and AC loss of Nb3Sn CICCs by quantitative modeling and experiments
    Arend Nijhuis (University of Twente)
    29/06/2015, 17:00
    ICMC-08 - Superconductor Stability and AC Losses
    Contributed Oral Presentation
    The performance during an operating plasma scenario of Nb3Sn Cable-in-Conduit Conductors (CICCs) designs envisaged for the ITER Central Solenoid has been analyzed with the code JackPot-ACDC. At present there is no experimental facility available to test the stability of the conductors under relevant pulsed plasma operating conditions. Only limited experimental data is existing that is suitable...
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  5. 111. Calorimetrically Measured Interstrand Contact Resistances and Coupling Magnetizations in Cored QXF-Type Nb3Sn Rutherford Cables for the LHC Quadrupole Upgrade
    Prof. Ted Collings (MSE, OSU)
    29/06/2015, 17:15
    ICMC-08 - Superconductor Stability and AC Losses
    Contributed Oral Presentation
    When exposed to a ramping magnetic field the Rutherford cable is the seat of coupling magnetization produced by interstrand coupling currents passing through the interstrand contact resistances (ICR) -- the strand crossover resistances, Rc, and the side-by-side (adjacent-strand) resistances, Ra. The coupling magnetization, is greatest when the applied field is normal to the cable’s surface in...
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  6. 401. Magnetization losses in MgB2 wire matrix material
    Philippe Masson (University of Houston)
    29/06/2015, 17:30
    ICMC-08 - Superconductor Stability and AC Losses
    Contributed Oral Presentation
    Magnesium diboride conductors are considered for use on fully superconducting wind turbine generators and, as a results, being able to quantify the AC losses in MgB2 wound stators is paramount. AC losses were measured on several MgB2 conductors based on NiCu matrix material. The measurements were done calorimetrically at about 15 K and at applied magnetic fields up to 100 mT and frequencies up...
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  7. 30. Modelling AC ripples in HTS coated conductors
    Francesco Grilli (Karlsruhe Institute of Technology)
    29/06/2015, 17:45
    ICMC-08 - Superconductor Stability and AC Losses
    Contributed Oral Presentation
    DC transmission using high temperature superconducting (HTS) coated conductors offers a promising solution to the globally growing demand for effective, reliable and economic transmission of green energy up to GW level over very long distances. The credible estimation of the losses and thereby the heat dissipation involved is highly essential for the rational design of practical HTS DC...
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