JT-60SA
JT-60SA ( J stands for Japan, T for tokamak, S for “super” and refers to the superconducting coils, A for “advanced” because demanding plasmas are to be examined) is a nuclear fusion reactor and a European-Japanese research project on fusion energy . The reactor, the successor to the JT-60 at the same location, is based on the tokamak principle and should be available for first experiments in 2020. The reactor is located near Naka in the Japanese prefecture of Ibaraki .
Assembly began in 2013 with the cryostat base plate, which was manufactured in Spain. The plasma vessel manufactured in Japan was finished in 2018, and the research facility was completed at the end of March 2020.
Comparison with other fusion research reactors
JT-60SA works on the tokamak principle.
JT-60SA is significantly smaller than the ITER reactor currently under construction . As far as the plasma size of around 130 m 2 is concerned, the JT-60SA is more in the range of its predecessor JET - after all, it is currently the largest fusion device in the world. Unlike JET and ITER, the JT-60SA will be limited to model plasmas made from light hydrogen and deuterium and will not use a deuterium-tritium mixture.
The aim is to supplement the ITER test reactor and to enlarge the database for the planned demonstration power plant DEMO, particularly in the area of quasi-stationary plasmas. For this purpose, one wants to generate high-power plasma pulses up to one hundred seconds long.
The superconducting magnet coils made of a niobium-titanium alloy, which surround the ring-shaped vacuum vessel , generate a strong magnetic field of up to nine Tesla.
Individual evidence
- ↑ Participating institutions
- ↑ key papers from the IAEA Fusion Energy Conference (FEC) 2018
- ↑ ipp.mpg.de: Japanese-European fusion device JT-60SA will be completed on April 7, 2020
- ↑ JAEA 2006-2007 annual report . Archived from the original on January 6, 2013. Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Retrieved October 30, 2019: "3.1.3 Machine Parameters: A bird's eye view of JT-60SA is shown in Fig. I.3.1-1. Typical parameters of JT-60SA are shown in Table I.3.1-1. The maximum plasma current is 5.5 MA with a relatively low aspect ratio plasma (Rp = 3.06 m, A = 2.65, κ95 = 1.76, δ95 = 0.45) and 3.5 MA for an ITER-shaped plasma (Rp = 3.15 m, A = 3.1 , κ95 = 1.69, δ95 = 0.36). Inductive operation with 100s flat top duration will be possible within the total available flux swing of 40 Wb. The heating and current drive system will provide 34 MW of neutral beam injection and 7 MW of ECRF. The divertor target is designed to be water-cooled in order to handle heat fluxes up to 15 MW / m2 for long time durations. An annual neutron budget of 4x1021 neutrons is foreseen “lots of detail on JT-60SA in section 3
Web links
- Side of the JT-60SA collaboration (English)
- Video of the assembly of the JT-60SA