JPS5919888A - Reverse magnetic field pinch type fuion 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 The present invention relates to a reverse magnetic field pinch type nuclear fusion device, and particularly to a reverse magnetic field pinch type nuclear fusion device that has a plasma column position control function.

Conventionally, there was a device shown in Figure 1 as a seed seed device.
In the figure, the vacuum vessel 3 is an iron core around which a toroidal coil / for applying a toroidal magnetic j station to the plasma and a voloidal coil λ for flowing a toroidal magnetic flux to the plasma are wound.
In addition, a toroidal shell 6 is provided for plasma equilibrium and stability, and an observation window is provided for plasma measurement. j is a vacuum pump, and 7 is a generated plasma. With this configuration, the vacuum container 3 is brought to an ultra-high vacuum using the vacuum pump j, and then a constant D1 gas is introduced into the vacuum container 3, and a current is applied to the toroidal coil and the voloidal coil. Flow. Then, a toroidal current flows through the plasma,
Generation of plasma 7 and confinement heating are performed.

The plasma 7 tries to spread outward in the vacuum vessel 3 due to its own pressure and toroidal current, but due to the toroidal shell 6 or l (empty? In addition, this device shows a tendency to balance the position of the plasma even by the vertical magnetic field leaking from the boroidal coil coil.

However, the conventional device with the above configuration only controls the plasma position using the vertical magnetic field generated by the boroidal coil coil or the eddy current generated in the toroidal shell, so it cannot operate properly for long discharge times. Moreover, it was difficult to precisely control the position of the plasma column.

This invention has been made in view of the above circumstances, and provides a reverse magnetic field pinch-type fusion device that can precisely control the position of a plasma column and confine high-temperature plasma. The main purpose of this is to

Another object of the present invention is to provide a means for detecting the position of a plasma column, which is new to the conventional apparatus, and a signal from the detecting means to cause a flow i1. An object of the present invention is to provide a reverse magnetic field pinch type nuclear fusion device rt which is provided with means for adjusting the current applied to the plasma and controls the voltage applied in the large radial direction of the plasma.

Below is an example of Jin's invention illustrated in the drawings. RQ Q
)J do. In FIG. 2, an iron core V around which is wound a toroidal coil for generating a toroidal magnetic field and a voloidal coil λ for inducing a current in the plasma is arranged around a vacuum vessel 3, In a device in which plasma 7 is generated in a vacuum vessel 3 provided with a toroidal shell t for achieving plasma equilibrium and stability, a shell 7 is formed facing the outer wall of the vacuum vessel 3 in the large radial direction (R force plane). /Paired position detector? a,? Place b. This position detector 9a.

As 7b, an optical type or a magnetic type can be considered, and an appropriate one is selected and used. Is 10 a position detector? a,? It is a voloidal coil jcl+ control system that operates in response to the signal from b and adjusts the pressure applied to the plasma.
, rB, source/,2. Current controller/3 is connected
It consists of L and is 29.

Next, the operation will be explained. The process up to the generation of plasma 7 is the same as in the case of the conventional apparatus described above.

The generated plasma column is confined approximately at the center within the vacuum vessel 3 due to the toroidal shell, but sometimes tries to deviate from the center.

Position detector at this time? a and qb detect the position of the plasma column and feed back the position signal to the voloidal coil control system IO. Then, the current controller 13 sends a current corresponding to the position signal to the control coil /l, thereby adjusting the current flowing through the shiboloidal coil, and by controlling the voltage to apply force and force in the large radius direction of the plasma, the plasma column change the toroidal current distribution within. As a result, the plasma column is returned to the center of the vacuum vessel 3.

In order to balance the plasma position, a device has been proposed in which a vertical magnetic field coil, a coil, and even a quadrupole magnetic field coil are installed, but this invention can also be applied to a magnetic field device, and the same effect can be achieved. When you get it, you get sharp. It goes without saying that the present invention can also be applied to reverse magnetic field pinch type plasma experimental equipment and nuclear fusion reactors.

As described above, this invention is capable of controlling the position of a plasma column!
Since it can be formed densely, the energy loss of the plasma is minimized and the high temperature plasma can be confined.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of a conventional device, and Fig. 2 is a schematic diagram of the main part configuration of an embodiment of the present invention shown in a cylindrical coordinate system (" + ψ. 2). l... Toroidal shell , co-boloidal coil, J
・・Vacuum vessel, ・・Iron core, ・・Troidal shell,
? a.? b.. It, detector, 10.. Voloidal coil control system, /l-9 control coil, 7.2.
・Power supply, /3...Current controller. In each figure, the same reference numerals indicate the same or similar parts. Agent Shin Kuzuno −

Claims (2)

[Claims] (1) In a reverse magnetic field pinch type nuclear fusion device in which an iron core wound with a voloidal coil and a toroidal coil are arranged surrounding a vacuum vessel, the position of the plasma column arranged in the vacuum vessel is detected. a detector, a control coil wound around the iron core, and a position I! connected to the control coil via a power source from the position detector. A reverse magnetic field pinch type nuclear fusion device [1] characterized by comprising a current controller that operates in response to a signal. (2) The inverse magnetic field pinch type nuclear fusion vehicle according to claim 1, wherein l pairs of position detectors are disposed facing each other in the large radial direction of the vacuum vessel.