“…The full architecture is given in Fig. 6 and was described in detail elsewhere 35 , 36 , 49 . Figure 6 Layer-by-layer structure of 2G HTS wire described in this article.…”
The fusion power density produced in a tokamak is proportional to its magnetic field strength to the fourth power. Second-generation high temperature superconductor (2G HTS) wires demonstrate remarkable engineering current density (averaged over the full wire), JE, at very high magnetic fields, driving progress in fusion and other applications. The key challenge for HTS wires has been to offer an acceptable combination of high and consistent superconducting performance in high magnetic fields, high volume supply, and low price. Here we report a very high and reproducible JE in practical HTS wires based on a simple YBa2Cu3O7 (YBCO) superconductor formulation with Y2O3 nanoparticles, which have been delivered in just nine months to a commercial fusion customer in the largest-volume order the HTS industry has seen to date. We demonstrate a novel YBCO superconductor formulation without the c-axis correlated nano-columnar defects that are widely believed to be prerequisite for high in-field performance. The simplicity of this new formulation allows robust and scalable manufacturing, providing, for the first time, large volumes of consistently high performance wire, and the economies of scale necessary to lower HTS wire prices to a level acceptable for fusion and ultimately for the widespread commercial adoption of HTS.
“…The full architecture is given in Fig. 6 and was described in detail elsewhere 35 , 36 , 49 . Figure 6 Layer-by-layer structure of 2G HTS wire described in this article.…”
The fusion power density produced in a tokamak is proportional to its magnetic field strength to the fourth power. Second-generation high temperature superconductor (2G HTS) wires demonstrate remarkable engineering current density (averaged over the full wire), JE, at very high magnetic fields, driving progress in fusion and other applications. The key challenge for HTS wires has been to offer an acceptable combination of high and consistent superconducting performance in high magnetic fields, high volume supply, and low price. Here we report a very high and reproducible JE in practical HTS wires based on a simple YBa2Cu3O7 (YBCO) superconductor formulation with Y2O3 nanoparticles, which have been delivered in just nine months to a commercial fusion customer in the largest-volume order the HTS industry has seen to date. We demonstrate a novel YBCO superconductor formulation without the c-axis correlated nano-columnar defects that are widely believed to be prerequisite for high in-field performance. The simplicity of this new formulation allows robust and scalable manufacturing, providing, for the first time, large volumes of consistently high performance wire, and the economies of scale necessary to lower HTS wire prices to a level acceptable for fusion and ultimately for the widespread commercial adoption of HTS.
“…Even though the degree of automation varies in the different production lines, a large amount of process data is recorded in-line in most lines. It is used to monitor and partly control the coating processes [121,122]. Almost all manufacturers use inline tools such as the TapeStar XL to determine the critical current and other quality parameters of the finished product.…”
Section: Statusmentioning
confidence: 99%
“…Most of these defects are visible to the naked eye. As it is very costly to examine kilometres of tape surface daily, we have developed a quality control instrument based on in-situ tape surface image processing that allows us to find most of the contrast defects, but cannot specify the defect type [121].…”
This paper presents a roadmap to the application of AI techniques and big data for different modelling, design, monitoring, manufacturing and operation purposes of different superconducting applications. To help superconductivity researchers, engineers, and manufacturers understand the viability of using AI and big data techniques as future solutions for challenges in superconductivity, a series of short articles are presented to outline some of the potential applications and solutions. These potential futuristic routes and their materials/technologies are considered for a 10-20 years time-frame.
“…It has been previously shown [47,48] that the combination of N e in TCO films and activation energy of a-Si:H films plays a significant role in increasing the contact resistivity (ρ c ) of the TCO/a-Si:H stack. However, we believe that the difference of ∼2 Ω.cm 2 in ρ c cannot be accounted for rather insignificant difference in N e (1.5 x 10 20 cm −3 vs 3.0 x 10 20 cm −3 as measured on planar a-Si:H-coated Si wafers).…”
Section: Effect Of Pld Ito Deposition Pressure On Shj Cell Performancementioning
confidence: 99%
“…One possible route is depositing a highly-textured MgO seed layer that is commonly used for the similar seeding role for high-temperature semiconductor tapes (by e.g. Ion Beam Assisted Deposition) [47]. Alternatively, oxide nanosheets (NS) can be utilized as growth templates.…”
Section: Towards Integration Of Transparent Conducting Lbso On Amorph...mentioning
prof. dr. ir. W. G. van der Wiel University of Twente prof. dr. ir. A. Brinkman University of Twente Design: Cover art was designed by M. Teplyakova. It shows artistic impression of pulsed laser deposition of transparent conducting oxide atoms on top of organic layer in a halide perovskite solar cell.
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