JPS6041314B2 - Coil device for nuclear fusion experimental equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a coil device for a nuclear fusion experimental device.

Figure 1 shows a conventional nuclear fusion experimental device, in which plasma 11 for the fusion reaction is placed in a donut-shaped vacuum vessel 1.
Formed in 2.

The current transformer coil 14 is supplied with a large pulsed current to generate an induced voltage around the vacuum vessel 12 . At this time, a current is generated in the plasma to heat the plasma by Joule. The toroidal coil 15 generates a strong magnetic field as uniform as possible in the toroidal direction in the plasma to stabilize the plasma. Magnetic field coil 16 generates a magnetic field generally perpendicular to the torus plane of vacuum vessel 12 to maintain plasma current balance and stability. The iron core 13 also serves as a support structure. However, as the capacity of such subordinate devices increases,
This is not desirable for increasing the size of the device since it requires space to install current transformer coils, magnetic field coils, etc.

For this reason, as shown in FIG. The issue is how to support this. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a large-capacity coil device for a nuclear fusion experimental device that can effectively support the electromagnetic force generated by the coil.

The object of the present invention is to provide a current transformer coil that is wound around the outer periphery of a vacuum vessel that confines plasma and generates a yield voltage around the vacuum vessel, and a magnetic field that generates a magnetic field that is approximately perpendicular to the torus surface of the vacuum vessel. In a coil device for fusion experiments having a coil, in order to ultimately support the electromagnetic force of the coil on the outer wall of the vacuum vessel, a spacer is partially provided on the outer circumference of the coil, between each coil, and in a toroidal direction on the outer circumference of the vacuum vessel. This is achieved by

Embodiments of the present invention will be described below with reference to the accompanying drawings.

FIG. 2 shows an embodiment of the present invention, and shows a vacuum container 1.
2 and the toroidal coil 15, a current transformer coil 21 and a magnetic field coil 22, which run in the toroidal direction indicated by the arrow T, are arranged. Supported by

Incidentally, even if the horizontal magnetic field coil 20 is installed in the conventional manner, it will not be an obstacle to increasing the size. Here, as shown in FIG. 3, a rib-like or annular shape having a finite width is provided between the vacuum vessel 12 and the coil 22, between the coil 22 and the coil 21, and between the coil 21 and the toroidal coil 15. Subesa 30,3
1 and 32 are partially installed in the toroidal direction.

The spacer 30 is welded to the outer wall of the vacuum vessel 12. In such a configuration, when the coil is energized, electromagnetic forces (F, a, F.b, F2a, F2b, etc.) as shown in FIG. towards the center of the electromagnetic force, the vacuum vessel can effectively support the electromagnetic force.

The inward electromagnetic force of the magnetic field coil 22 is applied to the inner spacer 30.
It is transmitted to the vacuum container 12 via. The inward electromagnetic force of the current transformer coil 21 is caused by the intermediate sub-sample 31 and the inner sub-sample 3.
0 or via the spacer 31, the magnetic field coil 22, and the spacer 30. The electromagnetic force generated in the coil may be opposite to that shown in FIG. 4 depending on the phase of the current flowing through the coil, and may be directed toward the outer circumference of the cross section of the vacuum vessel 12. In such a case, the spacer 32 on the outer periphery restricts the movement of the coil. The present invention
As described above, by providing a spacer on the outer periphery of the coil, between each coil, and on the outer periphery of the vacuum vessel, it is possible to provide a coil device for a fusion experimental device that can efficiently support electromagnetic force with effective use of space in a large-capacity device. can.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a follower device, Fig. 2 is an explanatory diagram of an embodiment of the present invention, Fig. 2a is a sectional view taken along the line L^-D^ of Fig. 2b, is a sectional view taken along the line OB-OB in Fig. 2a, Fig. 3 is an explanatory view of the main parts of the above embodiment, and is a sectional view taken along the line m-m in Fig. 2b, and Fig. 4 shows the effect on the coil. It is an explanatory view showing electromagnetic force. 1 1...Plasma, 12...Vacuum container,
14... Current transformer coil, 15... Toroidal coil, 16... Magnetic field coil, 20...
Horizontal magnetic field coil, 21...Current transformer coil, 22...
Magnetic field coil, 30, 31, 32... Subasa, T... Toroidal direction. Figure 1 Figure 2 Figure 3 Figure 4

Claims (1)

[Claims] 1. A fusion experiment that includes a current transformer coil that is wound around the outer circumference of a vacuum vessel that confines plasma and that generates an induced voltage around the vacuum vessel, and a magnetic field coil that generates a magnetic field that is approximately perpendicular to the torus surface of the vacuum vessel. A coil device for a nuclear fusion experimental device, characterized in that the coil device for a nuclear fusion experiment device is provided with a spacer partially between each coil on the outer circumference of the coil and in a toroidal direction on the outer circumference of a vacuum vessel.