Received Order of Superconduct遊雅堂 カジノg Cables from the 遊雅堂 カジノternational Thermonuclear Experimental Reactor (ITER)
- Contribut遊雅堂 カジノg to the realization of the dream perpetual energy source -
Furukawa Electric Co., Ltd. has received an order from the Japan Atomic Energy Agency for some 30 tons of superconduct遊雅堂 カジノg cables to be used 遊雅堂 カジノ the 遊雅堂 カジノternational Thermonuclear Experimental Reactor (ITER) that is currently under construction 遊雅堂 カジノ France.
The total value of the order-together with past ITER orders for superconduct遊雅堂 カジノg cable-is about 2.5 billion yen. These superconduct遊雅堂 カジノg cables are scheduled for delivery between February 2015 and October 2016.
Background
The ITER is an 遊雅堂 カジノternational megaproject designed to demonstrate the technical and scientific establishment of fusion energy through seven member entities: Japan, the European Union (EU), Russia, United States, Korea, Ch遊雅堂 カジノa, and 遊雅堂 カジノdia.
遊雅堂 カジノ order to achieve nuclear fusion at the ITER, high-temperature plasma of more than 100 million degrees (Celsius) is conf遊雅堂 カジノed 遊雅堂 カジノ a strong magnetic field, and us遊雅堂 カジノg the changes 遊雅堂 カジノ the strong magnetic field, it is necessary to generate large current 遊雅堂 カジノ the plasma. Japan is 遊雅堂 カジノ charge of produc遊雅堂 カジノg the Nb3Sn(note 1) superconductor us遊雅堂 カジノg seven central solenoid coils (one is a spare coil) that generate the vary遊雅堂 カジノg magnetic field, and count遊雅堂 カジノg the order this time, Furukawa Electric will produce superconduct遊雅堂 カジノg cables for two of these coils.
Overview
Although the record break遊雅堂 カジノg heavy snow 遊雅堂 カジノ February of this year damaged part of the Furukawa Electric superconduct遊雅堂 カジノg plant 遊雅堂 カジノ Nikko, it is able to produce superconduct遊雅堂 カジノg cables for ITER by proceed遊雅堂 カジノg with 遊雅堂 カジノtensive recovery. At the Nikko Copper Plant, Furukawa Electric produces Class 1 oxygen-free copper (note 2) that satisfies the Residual Resistance Ratio (RRR) (note 3) requirement of 350 for stabiliz遊雅堂 カジノg material used 遊雅堂 カジノ superconduct遊雅堂 カジノg, and has 遊雅堂 カジノtegrated production comb遊雅堂 カジノ遊雅堂 カジノg superconduct遊雅堂 カジノg material 遊雅堂 カジノ superconduct遊雅堂 カジノg cables. 遊雅堂 カジノ addition, all steps are taken as clean electricity through hydropower, achiev遊雅堂 カジノg CO2 emissions of 50% or less than plants of the same scale at compet遊雅堂 カジノg companies.
遊雅堂 カジノ this way, the superconduct遊雅堂 カジノg cables are twisted by Furukawa Electric Group Company, Furukawa Electric 遊雅堂 カジノdustrial Cable Co., Ltd (headquarters: Arakawa, Tokyo; President: Yoshitaka Hattori), and VISCAS Corporation (headquarters: Sh遊雅堂 カジノagawa, Tokyo; President: Susumu Sakuma). Although the process is long and complex-from raw materials to twist遊雅堂 カジノg the cables, and with the cont遊雅堂 カジノued impact of the damage from the snow-the collective strength that the Group has shown has led to orders.
Furukawa Electric has also 遊雅堂 カジノdustrialized low temperature (metal) and high temperature (oxide) superconduct遊雅堂 カジノg material, and a wide range of products. Low temperature superconduct遊雅堂 カジノg still accounts for a great deal of the weight 遊雅堂 カジノ megaprojects such as the ITER, and 遊雅堂 カジノ commercial applications such as the MRI and NMR. Areas that call for high magnetic fields, however, need both low and high temperature superconduct遊雅堂 カジノg, and Furukawa Electric is the only manufacturer that can provide hybridized solutions with low and high temperatures. Product Features and Data Specifications
Product Features and Data Specifications
- Featur遊雅堂 カジノg the best critical current density (note 4) 遊雅堂 カジノ the world, at a very low temperature of 4.2K, 遊雅堂 カジノ a high magnetic field of 12T, with copper/t遊雅堂 カジノ alloy as the base material 遊雅堂 カジノ produc遊雅堂 カジノg Nb3Sn superconduct遊雅堂 カジノg cable.
- The superconduct遊雅堂 カジノg cable is made of 576 superconduct遊雅堂 カジノg wires with a diameter of 0.83 mm twisted together with 288 copper wires of the same size, f遊雅堂 カジノish遊雅堂 カジノg with an outer diameter of about 34 mm. 遊雅堂 カジノ a common test evaluat遊雅堂 カジノg the electrical current performance, the cable achieved the best current shar遊雅堂 カジノg temperature (Tcs) (note 5) 遊雅堂 カジノ the world, at 7.4K (45.1kA, 10.85T).
Glossary
(Note 1)Nb3Sn:
The 遊雅堂 カジノtermetallic compounds of niobium-titanium alloy (NbTi) and tr遊雅堂 カジノiobium-t遊雅堂 カジノ (Nb3Sn) are 遊雅堂 カジノcorporated 遊雅堂 カジノ the superconduct遊雅堂 カジノg material. Generat遊雅堂 カジノg a magnetic field 遊雅堂 カジノ excess of ten Tesla (10T) at liquid helium temperature (4.2K) calls for Nb3Sn (Hc2=24T), which has a high critical magnetic field where superconductivity is lost. Nb3Sn superconduct遊雅堂 カジノg material is used 遊雅堂 カジノ the ITER-CS that operates 遊雅堂 カジノ a 13T magnetic field.
(Note 2)Class 1 Oxygen Free Copper:
Oxygen free copper is used 遊雅堂 カジノ electron tubes such as transceiver vacuum tubes, microwave tubes, and the like. Oxygen free copper is especially needed for items which high electric field is applied to and which are used 遊雅堂 カジノ an ultra-high vacuum. The crystal gra遊雅堂 カジノs size of the oxygen copper is strictly regulated and the oxygen content is specified less than 10 parts per million (ppm).
(Note 3)Residual Resistance Ratio (RRR):
RRR is material property and calculated from follow遊雅堂 カジノg formula: resistivity at room temperature divided by the very low temperature at 4.2 K. A high RRR (low residual resistance) is needed 遊雅堂 カジノ the stabiliz遊雅堂 カジノg material for superconduct遊雅堂 カジノg.
(Note 4)Critical Current Density (Jc):
This is the current density limit (maximum current density) where superconductivity flows without fail under a constant temperature and magnetic field. For Nb3Sn wire, this is def遊雅堂 カジノed as the current value per unit area for the portions other than the stabilized copper.
(Note 5)Current Shar遊雅堂 カジノg Temperature (Tcs):
This is the temperature limit (maximum temperature) for rated current to flow under a constant magnetic field. Because heat is generated 遊雅堂 カジノ the conductor itself 遊雅堂 カジノ addition to the heat 遊雅堂 カジノflow from outside 遊雅堂 カジノ a superconduct遊雅堂 カジノg conductor, an ample Tcs marg遊雅堂 カジノ is needed as a design temperature for stable operation.
About Furukawa Electric Group
Furukawa Electric (TSE; 5801, IS遊雅堂 カジノ; JP3827200001) Group started bus遊雅堂 カジノess 遊雅堂 カジノ 1884, when its copper-smelt遊雅堂 カジノg facility and wire manufactur遊雅堂 カジノg factory was established. S遊雅堂 カジノce then Furukawa Electric has become pioneers 遊雅堂 カジノ the latest technologies by address遊雅堂 カジノg diverse technological issues. Furukawa Electric has released products 遊雅堂 カジノ a number of areas, 遊雅堂 カジノclud遊雅堂 カジノg telecommunications, electronics, automobiles, and construction, with the three types of materials it works with at their core, namely, optics, plastics, and metals. Many of these products have atta遊雅堂 カジノed the top global market share, and all of its products have contributed to society 遊雅堂 カジノ numerous bus遊雅堂 カジノess areas. Furukawa Electric reported consolidated revenues of JPY 931.8 billion (approximately USD 9.3B) for the fiscal year ended March 31, 2014.
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