Conveners
Wed-Mo-Po3.11 - Quench and Normal Zone Behavior II
- Fedor Gömöry (Institute of Electrical Engineering, Slovak Academy)
- Honghai Song (Brookhaven National Laboratory)
No-insulation (NI) high-temperature superconductor (HTS) coil which have self-protecting feature when quench have been presented for several years, HTS magnet using NI technique also have been applied, however, the quench behavior need to be calculated and analyzed. With the charging delay of our magnet satisfied, YBCO coated conductor tapes with copper cladding are used which have better...
In this paper we present quench analysis results of a Low-Temperature Superconducting (LTS) quadrupole triplet magnet system, a part of the In-flight Fragment (IF) separator of a heavy ion linear accelerator complex, named RAON, currently being constructed by the Institute of Basic Science (IBS). This magnet system is composed of three quadrupole magnets: a triplet, surrounded by iron yokes...
High-field magnet technology based on REBCO coating conductor is facing several critical challenges, one of which being quench detection and protection in various working conditions with or without strong stresses. We describe a fast turnaround experimental platform for testing quench initiation and detection of REBCO coated conductors for high field magnet applications.
It is essentially a...
This paper proposes a new lumped-circuit model that has been modified from the conventional one to demonstrate the fast electromagnetic quench propagation among electromagnetically-coupled no-insulation high temperature superconductor (HTS) coils. Recently, multiple groups have reported that the conventional lumped-circuit model, which has well demonstrated charging and discharging behaviors...
High-temperature superconducting (HTS) device is a new application of superconducting technology in the electric power network. It shows several advantages, including small volume, light weight, high efficiency, strong capability of overload, and risk-free of fire. In this paper, we designed a core cable based on the adiabatic conditions, and then realized both numerical and experimental...
When High-temperature Superconducting Coated Conductors (HTS-CCs) are subject to a transport current of the order of the critical current, their low thermal diffusivity and nonuniform critical current density can easily lead to the appearance of destructive hot spots. The transition to the normal state probably causes the degradation of superconducting properties in HTS-CCs. In recent years,...
In this study, the quench initiation and propagation characteristics of second generation high temperature superconducting race-track coil (2G HTS RTC) are investigated in both experiment and simulation. This RTC is insulated by the metal-insulator transition (MIT) insulation material which has a variability of the contact resistance as a function of temperature. First, thermal quench tests...
Abstract: Because the current carrying capacity of a single superconducting tape is limited, in some practical superconducting devices, multiple tapes need to be used in parallel. Due to the inhomogeneity of the tape and their uneven current distribution, hot spots are easily formed on some of the tapes when the superconducting device passes through large current. The normal zone will not only...
