CHATS on Applied Superconductivity 2019

Europe/Zurich
Faculty of Mechanical Engineering and Mechatronics of the West Pomeranian University of Technology, Szczecin

Faculty of Mechanical Engineering and Mechatronics of the West Pomeranian University of Technology, Szczecin

Al. Piastów 19, 70-310 Szczecin Poland
Monika Lewandowska (West Pomeranian University of Technology, Szczecin), Dariusz Bocian (Institute of Nuclear Physics Polish Academy of Sciences (Kraków, PL))
Description

                                                  

CHATS AS 2019 will be held 9-12 July 2019, hosted by the Faculty of Mechanical Engineering and Mechatronics of the West Pomeranian University of Technology, Szczecin (WPUT) in collaboration with the The Henryk Niewodniczanski Institute of Nuclear Physics (IFJ), Polish Academy of Sciences, Krakow.

Objectives and Topics

CHATS-AS 2019 will be the 13th  in a series of international workshops that have followed the advancements in the state-of-the-art of modeling of superconducting systems, from cables to magnets and other devices used for power generation and transmission, fusion, high-energy physics as well as other applications. CHATS-AS is focused on novel principles and tools in engineering design and analysis of superconducting systems. The Workshop also aims at building bridges between modeling and experiments, in order to validate the sophisticated analysis tools available with proper data sets. The CHATS-AS 2019 welcomes contributions fitting this scope, with a particular interest in the following topics:

   -  Quench simulation and analysis for all classes of LTS and HTS magnets (e.g. accelerator, fusion, MRI/NMR, and other applications) and devices (e.g. power cables).

   -  Quench detection and protection of HTS magnets: novel concepts, models and experiments.

   -  Electro-mechanical modeling of Nb3Sn and HTS magnets.

   -  Multi-scale modeling of cables and magnets made of LTS and HTS materials, and their relation to the strand or short-sample performance.

   -  Simulation and optimization of large-scale superconducting and cryogenic systems, covering the combination of thermo-hydraulics, AC loss, current distribution, field quality, and operating margin calculations.

   -  Modeling in support of the design and development of cryocoolers, and conduction-cooled superconducting devices.

Participants
  • Aleksandra Dembkowska
  • Alfredo Portone
  • Andrea Zappatore
  • Arend Nijhuis
  • Bertrand Baudouy
  • Changtao Kan
  • Christine Hoa
  • Dariusz Bocian
  • Dong Keun Oh
  • Douglas MARTINS ARAUJO
  • François bonne
  • Jaroslaw Polinski
  • Jose Ferradas Troitino
  • Kirtana Puthran
  • Krzysztof Pomorski
  • Lorenzo Bortot
  • Louis ZANI
  • Lucas Brouwer
  • Marco Breschi
  • maria barba
  • Michael Wolf
  • Michal Maciejewski
  • Monika Lewandowska
  • Mykola Soloviov
  • Naoyuki Amemiya
  • Nicolo Riva
  • Pawel Surdacki
  • Paweł Pęczkowski
  • Piotr Szwangruber
  • Przemysław Wąchal
  • Rafal Ortwein
  • Reinhard Heller
  • Rob Van Weelderen
  • Roberto Bonifetto
  • Rui Kang
  • Sebastian Richter
  • sulayman shoala
  • Sylvie NICOLLET
  • Łukasz Tomków
    • 8:30 AM
      REGISTRATION
    • Opening welcome
      Conveners: Krzysztof Danilecki, Monika Lewandowska (West Pomeranian University of Technology, Szczecin)
    • Session I: Experimental results in support of superconducting system modeling
      Convener: Arend Nijhuis (University of Twente)
      • 1
        Heat transport in tilted stacks of HTS tapes at temperatures above 20K
        Speaker: Łukasz Tomków (University of Cambridge)
      • 2
        Hydraulic characterization of conductor prototypes for fusion magnets
        Speaker: Monika Lewandowska (West Pomeranian University of Technology, Szczecin)
    • 10:30 AM
      Coffee break
    • Session I: Experimental results in support of superconducting system modeling
      Convener: Arend Nijhuis (University of Twente)
    • Session II: Electro-mechanical modeling
      Convener: Alfredo Portone (Fusion For Energy/European Commission)
    • 12:50 PM
      Lunch break
    • Session II: Electro-mechanical modeling
      Convener: Alfredo Portone (Fusion For Energy/European Commission)
    • Session III: Electromagnetics
      Convener: Sylvie NICOLLET (CEA)
    • 3:40 PM
      Coffee break
    • 6:00 PM
      Guided city walk
    • Session IV: Thermo-hydraulic and cryogenics
      Convener: Bertrand Baudouy (CEA Paris-Saclay)
      • 10
        Adaptation of the nuclear safety code CATHARE3 to supercritical helium flow.
        Speaker: Sulayman Shoala (CEA/DRF)
      • 11
        Simulation of a cryogenic capillary tube: thermodynamic behavior subjected to heat load.
        Speaker: Maria Barba (CEA (Commissariat à l'Énergie Atomique))
      • 12
        An update of dynamic thermal-hydraulic simulations of the JT-60SA Cryogenic system for preparing plasma operation
        Speaker: François BONNE (CEA)
    • 10:30 AM
      Coffee break
    • Session IV: Thermo-hydraulic and cryogenics
      Convener: Bertrand Baudouy (CEA Paris-Saclay)
    • Session V: Electro-thermal modeling
      Conveners: Monika Lewandowska (West Pomeranian University of Technology, Szczecin), Dariusz Bocian (Institute of Nuclear Physics Polish Academy of Sciences (Kraków, PL))
    • 12:50 PM
      Lunch break
    • Session V: Electro-thermal modeling
      Conveners: Monika Lewandowska (West Pomeranian University of Technology, Szczecin), Dariusz Bocian (Institute of Nuclear Physics Polish Academy of Sciences (Kraków, PL))
      • 17
        1D and 2D finite-element approaches to extract the resistivity of the superconductor material from pulsed current measurements on HTS commercial tapes.
        Speaker: Nicolo' Riva (EPFL - EPF Lausanne)
      • 18
        Analysis of Current Distirbution during Quench in a Pancake coil wound with REBCO Roebel cable.
        Speaker: Marco Breschi (University of Bologna)
    • Session VI: Multiphysics modeling of superconducting devices
      Convener: Sylvie NICOLLET (CEA)
    • 3:40 PM
      Coffee break
    • Session VI: Multiphysics modeling of superconducting devices
      Convener: Sylvie NICOLLET (CEA)
      • 20
        OLYMPE, a multi-physic platform for fusion magnet design.
        Speaker: Quentin Le Coz (CEA)
      • 21
        Empowering the 4C code for the thermal-hydraulic analysis of coils for the design of future SC tokamaks: a novel, fully-3D model of the TF coil structures.
        Speaker: Roberto Bonifetto (Politecnico di Torino)
    • 7:00 PM
      Social dinner
    • Session VI: Multiphysics modeling of superconducting devices
      Convener: Sylvie NICOLLET (CEA)
      • 22
        Fundamental description of Field Induced Josephson junctions and devices built on their base.
        Speaker: Krzysztof Pomorski (University College Dublin)
      • 23
        FEM Modeling Of Multilayer Canted Cosine Theta (CCT) Magnets.
        Speaker: Rafal Ortwein / Przemyslaw Wachal
    • Session VII: Quench in HTS conductors
      Convener: Marco Breschi (University of Bologna)
      • 24
        Analysis of quench in HTS conductors for fusion applications: a novel 1D thermal-hydraulic modeling approach.
        Speaker: Andrea Zappatore (Politecnico di Torino)
    • 10:30 AM
      Coffee break
    • Session VII: Quench in HTS conductors
      Convener: Reinhard Heller (Karlsruhe Institute of Technology)
    • Session VIII: Quench and thermo-hydraulic LTS
    • 12:50 PM
      Lunch break
    • Session VIII: Quench and thermo-hydraulic LTS
      Convener: Naoyuki Amemiya (Kyoto University)
      • 29
        Numerical Investigation of Quench Event in the Innermost Pair of the KSTAR Central Solenoids.
        Speaker: Dong Keun Oh
      • 30
        Quench Protection Design of the HL-LHC Hollow Electron Lens System.
        Speaker: Michal Maciejewski (Technical University of Lodz(PL))
      • 31
        Towards to Quench Limit Determination of Superconducting Magnet with use of Thermal-Electrical Analogy

        The superconducting magnets are an essential part of large particle accelerators. The superconductors used in winding the coils of these magnets are characterized by the critical surface determined by three parameters: the critical temperature (Tc), the critical current density (Jc) and the critical magnetic field (Bc). The energy deposited in the superconductors by the particles lost from the beam or coming from the experiment collision debris may heat up the conductor in the magnet coil and provoke the magnet to quench. The modern design of the superconducting accelerator magnets requires the thermal optimization at cryogenic conditions in terms of heat transfer from magnet coils to heat reservoir. The main challenge of the accelerators operating with the superconducting magnets is their protection against the energy deposits to the coils from the particles lost from the beam and determination of the energy limits at which beam should be dump from the accelerators in order to avoid the magnets quench.
        The thermo-electrical analogy was used to develop a model of the superconducting magnets which has been used to study the thermal behavior of magnet and to determine the limits of quench of the magnets for expected beam loss profiles. The developed Network Model was used for thermal analysis of LHC Nb-Ti magnets and for optimization of Nb3Sn quadrupole magnets developed for use in the LHC luminosity upgrade. The analysis focuses on the heat transfer from the superconductor to the heat exchanger through a multilayer structure of magnet made of solid elements and channels occupied by the normal fluid or the superfluid helium. The results of the simulation by means of the Network Model were validated with measurements. A different sources of heat were implemented (magnet quench heaters, Inner Heating Apparatus) in different configurations. All simulations showed a very good agreemnt with measurements and with expected accuracy. The sources of discrepancy between the results of the simulations and measurements were related to the thermal properties of materials used in simulatiions. The developed model was successfully implemented to study of the thermal behavior of the newly developed enhanced insulation and newly designed Nb3Sn magnets. The future development of the model is foreseen by the design of a dedicated module which will introduce the energy deposits compatibile with the LHC beam pattern as well as module to study the transient mode.

        Speaker: Dariusz Bocian (Institute of Nuclear Physics Polish Academy of Sciences (Kraków, PL))
    • 3:40 PM
      Coffee break
    • 7:45 AM
      Wendelstein 7-X tour