MT26 Abstracts, Timetable and Presentations

Session

Mon-Af-Po1.16 - Quench Protection and Detection Systems II

Mon-Af-Po1.16

23 Sept 2019, 14:30

Level 2 Posters 1

Conveners

Mon-Af-Po1.16 - Quench Protection and Detection Systems II

• Minfeng Xu (GE Global Research)
• Etienne Rochepault (CEA Paris-Saclay)

749. Mon-Af-Po1.16-01 [44]: Design of a quench detection system by implementing an optimization procedure

Giordano Tomassetti (ENEA)

23/09/2019, 14:30

Poster Presentation

ENEA is currently working on the design of an experimental fusion reactor named DTT (Divertor Test Tokamak).
DTT magnetic system will be realized using superconductor materials thus implying the need for specific protection strategies. In particular, in case of magnet quench, detection and protection devices are needed and they represent a significant cost. The design of quench protection...

778. Mon-Af-Po1.16-02 [45]: Quasi-3D Thermal Simulation of Quench Propagation of Superconducting Magnets

Ms Laura D'Angelo (Technische Universität Darmstadt)

23/09/2019, 14:30

Poster Presentation

In order to protect superconducting magnets, quenches must be detected on time. Unfortunately, conventional simulation predictions are not accurate enough, because they often overestimate the quench detection thresholds. These false triggers lead to frequent and unneccessary shutdowns, which considerably reduce the availability of the entire system and become even more critical for the newly...

831. Mon-Af-Po1.16-03 [46]: Quench Detection of High-Temperature Superconducting Magnet using Unsupervised Learning Method

Haeryong Jeon (Yonsei University)

23/09/2019, 14:30

Poster Presentation

Quench detection of high-temperature superconducting (HTS) magnet is carried out using various signals like voltage, current and temperate from the magnet. Normally, the detection point is set to a fixed value, and when the measured value exceeded detection point, it is detected as a quench. The problem of this method is that the detection system may malfunction in a sequence that the user has...

1050. Mon-Af-Po1.16-04 [47]: Protection Studies of the HL-LHC circuits with the STEAM Simulation Framework

Matthias Mentink (CERN)

23/09/2019, 14:30

Poster Presentation

This paper presents a summary of protection studies being performed within the scope of the High-Luminosity Large Hadron Collider (HL-LHC) upgrade with the STEAM (Simulation of Transient Effects in Accelerator Magnets) simulation framework.

The HL-LHC upgrade features new technologies that are to be introduced into the Large Hadron Collider (LHC). This includes challenging Nb3Sn-based...

1820. Mon-Af-Po1.16-05 [48]: Presentation withdrawn

23/09/2019, 14:30

638. Mon-Af-Po1.16-06 [49]: Working principle analysis and Parameter optimization of snubber circuit applied in 100kA quench protection system

Dr Wei Tong (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, China; Science island Branch, University of Science and Technology of China, Hefei, 230026, China.), Prof. Zhiquan Song (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, China), Dr Chuan Li (International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics, Huazhong University of Science and Technology, Wuhan, 430074, China)

23/09/2019, 14:30

Poster Presentation

Quench protection system aims to protect superconducting magnets in Large Superconducting Fusion Device (LSFD) from long time and severe conducting current. A 100kA super-high pulse current with very short pulse width produced by LC commutation circuit, flows reversely into the Vacuum Circuit Breaker (VCB) to force the magnets current cross zero, which ensures the reliable turn-off of VCB to...