JPH0627211A - Proximity installation method of a plurality of nuclear magnetic resonance system - Google Patents

Abstract

PURPOSE:To realize proximity installation of a plurality of nuclear magnetic resonance systems by arranging adjacent nuclear magnetic resonance units such that the magnets thereof generate static fields in the opposite directions. CONSTITUTION:A plurality of nuclear magnetic resonance units comprising superconducting magnets 1, 2 generate static fields in the opposite directions as shown by arrow marks A, -A. Each magnet is constituted to generate static field oppositely to that generated from an adjacent magnet and the conducting direction of the exciting current of the superconducting coil can be switched. Consequently, leakage fields from respective magnets are offset in the space between the magnets 1, 2 to produce a very weak field therein. Since a field-sensitive machine can be interposed between two proximity installed nuclear magnetic resonance units, a plurality of nuclear magnetic resonance units can be installed in a limited room.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of installing a plurality of nuclear magnetic resonance apparatus in close proximity to each other.

[0002]

2. Description of the Related Art In SCM-NMR, a vertical magnet is usually used, and as shown in FIG. 1, a leakage magnetic field is generated around the magnet.

[0003]

Since the leaking field of view is strong,
People are unconsciously prevented from approaching within a predetermined distance. Also, equipment that is sensitive to magnetic fields cannot be placed nearby.

Recently, it is not uncommon to have multiple SCM-NMRs installed in one room, but two SCM-NMRs are installed.
The use efficiency of the room is extremely poor because the NMR must be placed at a distance more than a predetermined distance. In some small rooms it may not be possible to place more than one.

The present invention has been made in view of the above points, and an object of the present invention is to provide an installation method capable of arranging a plurality of nuclear magnetic resonance apparatuses in close proximity.

[0006]

To achieve this object, in the present invention, when a plurality of nuclear magnetic resonance apparatuses are installed close to each other, the directions of the static magnetic fields generated by the magnets of adjacent nuclear magnetic resonance apparatuses are The feature is that the directions are opposite to each other.

[0007]

In the installation method of the present invention, since the magnetizing directions of the magnets of the nuclear magnetic resonance apparatus are opposite to each other, in the space between the two magnets, the leakage magnetic fields from the respective magnets cancel each other out. , The synthesized magnetic field strength becomes extremely weak.

[0008]

The present invention will be described in detail below with reference to the drawings. Figure 2
1 is an embodiment of the present invention, and in the figure, 1 and 2 are superconducting magnets of a nuclear magnetic resonance apparatus. Arrows A and -A indicate the directions of the static magnetic fields generated by the respective magnets, which are opposite to each other, as can be seen from the figure. Each magnet can switch the direction of energization of the exciting current to the superconducting coil between normal and reverse so as to generate a static magnetic field in the direction opposite to the direction of the static magnetic field generated by the adjacent magnet. .

When the directions of the static magnetic fields generated by the two superconducting magnets are made opposite to each other as shown in FIG. 2, the leakage magnetic fields from the respective magnets cancel each other out in the space between the two magnets. Therefore, the strength of the synthesized magnetic field becomes extremely weak. Therefore, even if two nuclear magnetic resonance devices are arranged close to each other, a device sensitive to a magnetic field can be placed between them.
The utilization efficiency of the room is improved, and it becomes possible to arrange a plurality of nuclear magnetic resonance apparatuses even in a small room.

If three or more units are used, the arrangement shown in FIG. 3 can be considered. 3A and 3B show the case of three units, and FIGS. 3C and 3D show the case of four units.

[0011]

As described in detail above, according to the present invention,
Provided is a method capable of arranging a plurality of nuclear magnetic resonance apparatuses in close proximity.

[Brief description of drawings]

FIG. 1 is a diagram for explaining a distribution of a magnetic field generated by a superconducting magnet.

FIG. 2 is a diagram showing an embodiment of the present invention.

FIG. 3 is a diagram showing another embodiment of the present invention.

[Explanation of symbols]

 1,2 superconducting magnet

Claims (1)

[Claims] 1. When a plurality of nuclear magnetic resonance apparatuses are installed close to each other, the directions of static magnetic fields generated by magnets of adjacent nuclear magnetic resonance apparatuses are set to be opposite to each other. A method for installing a nuclear magnetic resonance apparatus in close proximity.