Conveners
Wed-Af-Po3.24 - Small Test Model Coil
- Rainer Meinke (AML Superconductivity and Magnetics)
- Eric Sun (Jefferson Lab, USA)
A previously commissioned system for exploring Ic pressure sensitivity in superconducting cables, the Transverse Pressure Insert, was instrumented and operated to examine signals resulting from strand motion and insulation/impregnation cracking in a fully-excited single strand embedded in an insulated and impregnated Rutherford cable stack at 4.2 K with transverse pressures up to 250 MPa and...
Motivated by our previous works, 26.4-T 35-mm and 18-T 74-mm ultra-high field no-insulation (NI) stand-alone magnets wound with 2G REBCO, we recently embarked on a new project to develop a 35-T NI REBCO standalone magnet. We published a design of a 35-T 40-mm winding bore magnet in 2017. Owing to the large average current density of the magnet (365 A/mm2), the magnet became highly compact; the...
The objective of this work is to discuss the engineering feasibility of high-frequency magnets for the magnetic hyperthermia cancer therapy. For effective induction heating properties of cancer therapy, the target specifications of the high-frequency magnet system are 0.06 T of the peak magnetic flux density with 200 kHz of the operating frequency at the center of used space. The operating...
High-temperature superconducting magnet technology are developing fast, especially using REBCO tapes. This paper present a new design of a HTS coil. The coil is made of stacked REBCO plates and operates with power supply, which works like a conventional resistive coil. The structure design and construction details was then described herein. The advantage of this design is its low inductance...
With manufacturing process development of the high temperature superconducting (HTS) tape, the hundreds meters HTS tapes are applied in industry, especially beneficiation. It cannot effectively improve the work efficiency of the material purification and separation, but also solve the problem that some weak magnetic materials are difficult to separate due to the so high magnetic intensity and...
Abstract: A laboratory solenoid magnet was designed and tested in this paper to explore the feasibility of ReBCO tapes applied to detector magnet technology. The magnet consists of several double pancake coils, which adopted to No-insulation winding method. The outer and inner radius were 240 mm and 150 mm, respectively. We conducted a series of experiments on the prototype to investigate the...
The Central Solenoid (CS) model coil, which is responsible for developing and verifying the larger-scale superconducting magnet technology of China Fusion Engineering Test Reactor (CFETR), has been designed and is currently being manufactured at ASIPP. In case of an emergency shut-down like in succession of a quench, the voltage across the coil may rise to about 2.5kV. Therefore, the coil have...
In the HTS superconducting magnet application fields like motors, generators and SMES, 2G coated conductor (CC) tapes will be subjected to alternating stress or strain during manufacturing and operation. The repeated load affects the mechanical integrity and eventually the electrical transport property of CC tapes. In the design of coils and magnets under magnetic fields, both the yield...
High-temperature superconducting magnet coils made with Sumitomo Type HT-NX are complex composite structures composed of Bi-2223 conductor filaments, silver matrix, solder, nickel-alloy laminations, polymer insulation, and epoxy or wax. The mechanical properties of these composites are required inputs to a correct stress analysis. Mechanical test specimens composed of several layers of...
Previously we reported the “Defect-irrelevant” behavior of a no-insulation (NI) high temperature superconductor (HTS) pancake coil in 2016. The test coil was wound with REBCO tapes having multiple “defects” and tested in a bath of liquid nitrogen at 77 K. Coil terminal voltages and magnetic constant of the test coil are essentially identical to those of its “healthy (defect-free)” counterpart...
