Analysis of ITER NbTi and Nb3Sn CICCs experimental minimum quench energy with JackPot, MCM and THEA models
| Autor: | Arend Nijhuis, Arnaud Devred, Marco Breschi, Tommaso Bagni, Jean-Luc Duchateau |
|---|---|
| Přispěvatelé: | Energy, Materials and Systems, Bagni, T., Duchateau, J.L., Breschi, M., Devred, A., Nijhuis, A. |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials Chemistry2506 Metals and Alloys
cable-in-conduit conductors Materials science cable-in-conduit conductor Nuclear engineering fusion magnets Ceramics and Composite Condensed Matter Physic Cryogenics quench model 01 natural sciences 7. Clean energy 010305 fluids & plasmas Sine wave ITER 0103 physical sciences Materials Chemistry Electrical and Electronic Engineering 010306 general physics Electrical conductor Coupling fusion magnet Metals and Alloys Plasma stability Condensed Matter Physics 22/4 OA procedure Magnetic field Amplitude Magnet Ceramics and Composites Physics::Accelerator Physics |
| Zdroj: | Superconductor Science and Technology Superconductor science and technology, 30(9):095003. IOP Publishing Ltd. |
| ISSN: | 0953-2048 |
| DOI: | 10.1088/1361-6668/aa7a80 |
| Popis: | Cable-in-conduit conductors (CICCs) for ITER magnets are subjected to fast changing magnetic fields during the plasma-operating scenario. In order to anticipate the limitations of conductors under the foreseen operating conditions, it is essential to have a better understanding of the stability margin of magnets. In the last decade ITER has launched a campaign for characterization of several types of NbTi and Nb3Sn CICCs comprising quench tests with a singular sine wave fast magnetic field pulse and relatively small amplitude. The stability tests, performed in the SULTAN facility, were reproduced and analyzed using two codes: JackPot-AC/DC, an electromagnetic-thermal numerical model for CICCs, developed at the University of Twente (van Lanen and Nijhuis 2010 Cryogenics 50 139-148) and multi-constant-model (MCM) (Turck and Zani 2010 Cryogenics 50 443-9), an analytical model for CICCs coupling losses. The outputs of both codes were combined with thermal, hydraulic and electric analysis of superconducting cables to predict the minimum quench energy (MQE) (Bottura et al 2000 Cryogenics 40 617-26). The experimental AC loss results were used to calibrate the JackPot and MCM models and to reproduce the energy deposited in the cable during an MQE test. The agreement between experiments and models confirm a good comprehension of the various CICCs thermal and electromagnetic phenomena. The differences between the analytical MCM and numerical JackPot approaches are discussed. The results provide a good basis for further investigation of CICC stability under plasma scenario conditions using magnetic field pulses with lower ramp rate and higher amplitude. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|