JPS5919887A - Reverse magnetic field pinch type fusion device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This emitted J t:g-, reverse magnetic field pinch type fusion device [
It's about this, but it's already been a long time since I last learned about it. 7. Surrounding the weapon that generates plasma, a toroidal coil,
This invention relates to a reverse magnetic field pinch type fusion device having an iron core around which a voloidal coil is wound.

Conventionally, there has been a device of this type as shown in FIG.

That is, a toroidal coil 11 is composed of an iron core around which a voloidal coil coil is wound, a vacuum vessel 3, l (empty pump 3, and a toroidal shell t). With this configuration, the vacuum bomber is operated to bring the vacuum container J to an ultra-high vacuum 17, and a constant gas of 191 is introduced into the vacuum container 3. In this state, current is applied to the toroidal coil l and the voloidal coil. When it flows, a toroidal current flows in the vacuum container 3.
Generation of plasma 7 and confinement heating are performed. The plastic tends to expand outwards due to its own pressure and toroidal current, but this is balanced by the eddy currents flowing through the toroidal coil 6 or the vacuum vessel J. In addition, this device attempts to balance the plasma 7 also by the vibration of the vertical surface 4 leaking from the voloidal coil λ.

However, since the conventional device was configured as described above, the perpendicular magnetic field by the boloidal coil λ or the toroidal shell 6 was applied to the equilibrium of the plasma position.
However, in the case of a long discharge period, this method was not suitable, and there was a problem in that it was not easy to precisely control the plasma column.

This invention aims to solve the problems of conventional devices as described above, and is called a reverse Fu field pinch type fusion device (hereinafter abbreviated as RFP) that can precisely control the position of the plasma column.
The main purpose is to provide

Further, an object of the present invention is to add a vertical magnetic field coil to the conventional device.
By adding a quadrupole I1 light field coil and a position detector, we can improve the a of υ, the positional quotient of the plasma column).
The object of the present invention is to provide R F' P with a longer plasma confinement time.

Below, this invention will be explained on 8F! An example of a λ diagram will be described. Fig. 2 shows a cylindrical coordinate system (R+ψ, 2), and a toroidal coil/boloigle coil λB7. C
The configuration of the 2'4'l-i4i J, iron core, and toroidal shell is the same as the aforementioned Maruki R11'P, and the toroidal current is in the ψ direction. In this invention, t”-
1 Furthermore, install the vacuum container 3, the vertical magnetic field goal 1 router, the 4 m poles a, the coil /θ, and the position (rl, detector //). / is the large radius (R
) and a pair facing each other in the direction R and a pair facing perpendicular to the R direction are arranged on the wall of the vacuum container 3, -C, optical type,
I'm wondering if it's magnetic type. 7 indicates plasma.Next, the operation will be explained. The generation size of the plasma 7 is the same as in the conventional case. Plasma striking is the central force.
When the horizontal direction is tr, the position is horizontally used by the position detector ii arranged horizontally opposite, and the vertical position is 1α.
Magnetic field? In addition, if the plasma column shifts downward by controlling the current of The plasma column is centered by controlling the current θ. In this case, within (1iυ(H
A current is passed in the same direction as the toroidal current of the plasma 7 in the vertical magnetic field coil (the smaller one), and a current is passed in the opposite direction to the toroidal current in the external vertical magnetic field coil. Thus, the second thing [1] is to generate a uniform vertical magnetic field within the plasma column. On the other hand, among the quadruple magnetic field coils 10, a current is passed in the direction of the R direction inner bait and the outer coil in the direction of the /d7'isma current, and the quadruple magnetic field coils IQ+7-# are arranged above and below.
``i Flow i flow in the opposite direction.

To explain in detail the effect of the above operation, Figure 43 shows the vertical magnetic field coil? shows the form of the magnetic field lines A when the PIJ negative pole magnetic field coil is provided, and in this case #i magnetic force mA is linear, so the glazma column 7F
i The movement under the soil is neutral.

On the other hand, vertical magnetic field coils, octupole magnetic field coils lO
In this invention, as shown in FIG.
it line of force line of force - something with a car, plasma column 7#
i Jin and K have minimal potential for vertical movement
Therefore, it is stable and at the same time allows precise control of the position of the plasma column. As a result, the plasma generation time/1° energy confinement time becomes longer.

In addition, this invention is an RP equipped with a helical magnetic field coil.
'By applying PIIC, similar effects can be obtained. It can also be applied to IIP's plasma experimental equipment and fusion reactors.

[Brief explanation of the drawing]

Fig. 1 is a cutaway view of a conventional device; Fig. 1 is a schematic diagram of the main part 41 of an embodiment of the present invention shown in a waste paper coordinate system;
Figure 3, Figure 3.
iv, J...vacuum vessel, d-iron core, t--toroidal shell, ter-vertical pot coil, lo...quadruple-magnetic field coil, 11-1st negative detector. In each figure, the same reference numeral indicates the quotient J'i and the portion corresponding to Fi. Agent & Trust – Coin 1 Diagram 6 Asahi 2 Diagram

Claims (3)

[Claims] (1) A reverse magnetic field pinch type fusion device comprising a vacuum vessel, a toroidal coil, and a voloidal coil, comprising a detector and a detector for outputting a plasma column current control signal generated in the vacuum vessel. This is a reverse magnetic field pinch type fusion device. (2) ^ Claim 1, which includes l pairs of position detectors disposed close to the wall of the empty container and facing each other in the direction of the large radius, and l pairs of position detectors facing in the direction perpendicular to the direction of the large radius. Reverse magnetic field pinch type nuclear fusion device as described in . (3) The reverse magnetic field pinch type fusion device according to claim 1, which is provided with a magnetic field coil of IJ7J.