CUSTO슬롯사이트R SUCCESS STORY
Excimer Laser Enables Volume Superconducting 슬롯사이트 Production
The Challenge
There is a growing demand for high-temperature superconducting (HTS) 슬롯사이트, often called tape, for use in the power grid (in cables, transformers, and other components) and instrumentation (NMR-spectrometers and MRI systems). And, should fusion reactors become practical, they will almost certainly require very large amounts (thousands of km) of HTS tape to handle the very high current densities. Early HTS production methods were limited in volume and cost, and could only produce 슬롯사이트 with a limited current density rating. Faraday Factory Japan set out to develop a high-volume, economical method for producing HTS for high-field applications.
The Solut슬롯사이트
They chose YBa2Cu3O7 (YBCO) as the 슬롯사이트 material because it can handle a higher current density than other HTS materials. They then designed a multilayer tape utilizing a thin, strong Hastelloy substrate including layers of MgO and YBCO. A thickness of 2.4 μm was identified as optimum for the YBCO layer. The Faraday Factory Japan team decided to use pulsed laser deposition (PLD) powered by a 308nm excimer laser, to create the HTS layer because it is a well-proven method for depositing stoichiometric films (meaning that the composition of the original target material is preserved in the deposited film). This is important for high-field applications because Faraday Factory Japan had decided to load the YBCO target with an excess of Y2O3 to minimize defects and maximize current density. TheCoherent LEAP 300C excimer 슬롯사이트was chosen as the PLD source for several reasons, according to Faraday Factory Japan’s Chief Executive Officer Dr. Sergey Lee. “The LEAP 300C offers a unique combination of high (1 joule) pulse energy and 300 Hz repetition rate which gives us high-throughput. Also, LEAP lasers have a well-established track record of 24/7 industrial reliability. This combination minimizes the true cost per laser watt and enables lower-cost, high-volume production of HTS 슬롯사이트.”
The Result
Using this cost-effective approach, Faraday Factory Japan recently delivered over 300 km of HTS 슬롯사이트 for use in the SPARC fusion reactor prototype. This was the largest volume delivery of HTS 슬롯사이트 to date from any supplier. And, independent testing showed that the 슬롯사이트 handles superior current density under high field conditions.
“LEAP excimer lasers minimize the true cost per laser watt and enable lower-cost, high-volume production of HTS 슬롯사이트 at Faraday Factory Japan."
— Dr. Sergey Lee, CEO, Faraday Factory Japan, Sagamihara, Japan
Figure 1:Faraday Factory Japan developed a high-volume, economical method for producing high-temperature superconducting (HTS) 슬롯사이트 for high-field applications.