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CHATS on Applied Superconductivity 2017

Dec 10 – 12, 2017
Institute for Materials Research, Tohoku University
Asia/Tokyo timezone
Due date for the paper submission was extended to Jan. 31 2018.

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Session

Session III

3
Dec 11, 2017, 9:00 AM
Institute for Materials Research, Tohoku University

Institute for Materials Research, Tohoku University

2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan

Conveners

Session III: LTS magnet and cryogenics

  • Reinhard Heller (Karlsruhe Institute of Technology)

Session III: LTS magnet and cryogenics

  • Reinhard Heller (Karlsruhe Institute of Technology)

Presentation materials

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  1. 11. Transient Heat Transfer Through the LHC Polyimide Cable Insulation
    Tiemo Winkler (UTwente)
    12/11/17, 9:00 AM

    During the operation of the LHC, the superconducting magnets are exposed to steady-state and transient heat loads. Knowledge of the thermal link between the superconductor and the He bath is essential to evaluate the stability of the superconductor. This work reports experimental data on the transient heat transfer between a stack of MB Rutherford superconducting cables and a He bath in...

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  2. 16. Development and test of a dynamic model of the ITER CSMC He refrigerator. Part II: from 80 K to 4 K
    Dr Roberto Bonifetto (Politecnico di Torino)
    12/11/17, 9:30 AM

    The superconducting (SC) magnets used to confine the plasma in nuclear fusion reactors must be first cooled from 300 K down to ~4-5 K, then kept sufficiently below the current sharing temperature during the tokamak pulsed operation, in order to preserve their SC properties. For that purpose, a He refrigerator is used. During the cooldown, it provides the boundary conditions (He temperature THe...

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  3. 5. Improved hydraulic model of cryogenic circuits for fusion magnet application
    Dr DONGKEUN OH (National Fusion Research Institute)
    12/11/17, 10:00 AM

    On the purpose to upgrade the code package of SUPERMAGNET-based hydraulic model, coupled 1-d flows at the multifunction branch is carefully explored not only in the context of hyperbolic PDEs, but also about the numerical stability in coupled solver models of co-simulation method. Comparing with the conventional method in other competitive tools like the ThermoPower package with Openmodelica,...

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  4. 62. Thermal-hydraulic analysis of low temperature superconducting CFETR Central Solenoid Model Coil
    Dr Roberto Bonifetto (Politecnico di Torino)
    12/11/17, 10:50 AM

    The China Fusion Engineering Test Reactor (CFETR) is the next device in the roadmap for the realization of fusion energy in China, aiming at bridging the gap between the fusion experimental reactor ITER and the demonstration reactor (DEMO).
    CFETR will operate in two phases: steady state operation and self-sufficiency will be the two key issues for Phase I, with a fusion power of up to 200 MW,...

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  5. 30. Analytical Method for the Prediction of Quench Initiation and Development in Accelerator Magnets
    Susana Izquierdo Bermudez (CERN)
    12/11/17, 11:20 AM

    The optimal design of the next generation of accelerator magnets calls
    for a high current density in the superconducting coil, which makes
    the magnet protection a challenge. Quenches in the high-field magnets
    for the High Luminosity LHC Upgrade typically develop within tens of
    ms, and the reaction time needs to be comparable, requiring active
    firing of heaters or other heat deposition...

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