JPS6329904U - - Google Patents
Info
- Publication number
- JPS6329904U JPS6329904U JP12367586U JP12367586U JPS6329904U JP S6329904 U JPS6329904 U JP S6329904U JP 12367586 U JP12367586 U JP 12367586U JP 12367586 U JP12367586 U JP 12367586U JP S6329904 U JPS6329904 U JP S6329904U
- Authority
- JP
- Japan
- Prior art keywords
- main magnet
- magnetic
- generates
- magnet coil
- magnetic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 claims description 16
- 230000004907 flux Effects 0.000 claims description 10
- 239000003302 ferromagnetic material Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Details Of Measuring And Other Instruments (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Description
第１図は本考案の実施例装置を示す側断面図、
第２図は実施例装置における漏れ磁束分布図、第
３図は異なる実施例を示す側断面図、第４図は異
なる実施例における漏れ磁束分布図、第５図は従
来装置を示す側断面図、第６図は従来装置におけ
る漏れ磁束分布図である。
１……主マグネツトコイル、２……中空部、３
……均一磁場、５……磁気シールド、６……開口
部、２０，３０……磁気遮へいコイル、１０……
主磁束、１１……軸線、１９……漏れ磁束、３９
……打消し磁束、９６，９７，９８，９９……等
磁束線。
FIG. 1 is a side sectional view showing an embodiment of the device of the present invention;
Fig. 2 is a leakage flux distribution diagram in the example device, Fig. 3 is a side sectional view showing a different embodiment, Fig. 4 is a leakage flux distribution diagram in a different embodiment, and Fig. 5 is a side sectional view showing a conventional device. , FIG. 6 is a leakage flux distribution diagram in a conventional device. 1... Main magnet coil, 2... Hollow part, 3
... Uniform magnetic field, 5 ... Magnetic shield, 6 ... Opening, 20, 30 ... Magnetic shielding coil, 10 ...
Main magnetic flux, 11... Axis line, 19... Leakage magnetic flux, 39
...Cancelling magnetic flux, 96,97,98,99...equal magnetic flux lines.
Claims (1)
軸線に平行な方向の均一磁場を発生する主マグネ
ツトコイルと、この主マグネツトコイルを包囲し
、軸方向の端面側に前記均一磁場に連通する開口
部を有する強磁性材からなる磁気シールドとを備
えたものにおいて、前記磁気シールドの外側に前
記主マグネツトコイルとほぼ同心状に配され、前
記主マグネツトの発生磁束と同じ方向の打消し磁
束を発生する磁気遮へいコイルを設けたことを特
徴とする均一磁場マグネツト。 A main magnet coil is formed into a hollow cylindrical shape and generates a uniform magnetic field in a direction parallel to the axis in a predetermined area in the center, and a main magnet coil that surrounds this main magnet coil and generates the uniform magnetic field on the end face side in the axial direction. A magnetic shield made of a ferromagnetic material having a communicating opening, which is disposed on the outside of the magnetic shield substantially concentrically with the main magnet coil, and has a magnetic flux canceling in the same direction as the magnetic flux generated by the main magnet. A uniform magnetic field magnet characterized by being provided with a magnetic shielding coil that generates magnetic flux.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12367586U JPS6329904U (en) | 1986-08-12 | 1986-08-12 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12367586U JPS6329904U (en) | 1986-08-12 | 1986-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6329904U true JPS6329904U (en) | 1988-02-27 |
Family
ID=31014990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12367586U Pending JPS6329904U (en) | 1986-08-12 | 1986-08-12 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6329904U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672324A (en) * | 1992-08-27 | 1994-03-15 | Hitachi Ltd | Magnetic shield structure provided with disconnecting coil |
-
1986
- 1986-08-12 JP JP12367586U patent/JPS6329904U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0672324A (en) * | 1992-08-27 | 1994-03-15 | Hitachi Ltd | Magnetic shield structure provided with disconnecting coil |
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