JP7375013B2 - 超伝導磁石アセンブリ用の自立型可撓性熱放射シールド - Google Patents
超伝導磁石アセンブリ用の自立型可撓性熱放射シールド Download PDFInfo
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- JP7375013B2 JP7375013B2 JP2021527245A JP2021527245A JP7375013B2 JP 7375013 B2 JP7375013 B2 JP 7375013B2 JP 2021527245 A JP2021527245 A JP 2021527245A JP 2021527245 A JP2021527245 A JP 2021527245A JP 7375013 B2 JP7375013 B2 JP 7375013B2
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- shield
- superconducting magnet
- magnet assembly
- thermal radiation
- temperature
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- 230000005855 radiation Effects 0.000 title claims description 64
- 229910052782 aluminium Inorganic materials 0.000 claims description 20
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- 239000010935 stainless steel Substances 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3804—Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/001—Thermal insulation specially adapted for cryogenic vessels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
- G01R33/34015—Temperature-controlled RF coils
- G01R33/3403—Means for cooling of the RF coils, e.g. a refrigerator or a cooling vessel specially adapted for housing an RF coil
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Description
Q=σA(Th 4-Tc 4)/(1/ε1+(1/ε2)-1)
のように表すことができる。式中、
Q:熱放射パワー
σ:ステファン・ボルツマン定数
A:対象となる2つの表面各々の表面積
Th:相対的に高温の表面の温度
Tc:相対的に低温の表面の温度
ε1:相対的に高温の表面の放射率
ε2:相対的に低温の表面の放射率
である。
- レーザ、ナイフ、ノコギリまたは他の手段によって切断した後に、テーピングによって、または可撓性材料に形成されたスロットおよびバーブを使用して、所定の位置に保持される形状に折り曲げる。低放射率表面を維持するために、アルミニウムテープまたはアルミニウムコーティングされたポリマーテープを可撓性材料の組み立てに使用してよい。
Claims (7)
- 超伝導磁石アセンブリであって、外側真空チャンバ(14)内に、超伝導磁石コイル(10)を含むコールドマスを含み、該コールドマスの周囲で前記外側真空チャンバ(14)の内側に配置された熱放射シールド(16)を有する、超伝導磁石アセンブリにおいて、
前記超伝導磁石アセンブリは、前記コールドマスを実質的に取り囲むための自立型可撓性シールドをさらに含み、該自立型可撓性シールドは、前記コールドマスと前記熱放射シールドとの間に配置された、低放射率コーティングを両面に有する成形プラスチックシートを含み、前記自立型可撓性シールドは、前記コールドマスに取り付けられた、低放射率コーティングを両面に有する成形プラスチックシートの折曲げ構造体を含み、
前記折曲げ構造体は、折曲げボックスカバー(42)、または、折曲げカウルを含む、
ことを特徴とする、超伝導磁石アセンブリ。 - 前記自立型可撓性シールドは、前記コールドマスの温度と前記熱放射シールドの温度との間の中間の温度で熱的に変動する、請求項1記載の超伝導磁石アセンブリ。
- 前記折曲げ構造体は、スリットおよびバーブ付きタブの構成を含む、請求項1または2記載の超伝導磁石アセンブリ。
- 前記折曲げ構造体は、両面にアルミニウム蒸着されたポリマーシートを含む、請求項1から3までのいずれか1項記載の超伝導磁石アセンブリ。
- 前記ポリマーシートは、厚さ125~500μmのPETシートを含む、請求項4記載の超伝導磁石アセンブリ。
- 前記ポリマーシートは、厚さ250μmのPETシートを含む、請求項5記載の超伝導磁石アセンブリ。
- 前記ポリマーシートの両面に、それぞれ厚さ20~100nmのアルミニウム層がアルミニウム蒸着されている、請求項4から6までのいずれか1項記載の超伝導磁石アセンブリ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1818808.6 | 2018-11-19 | ||
GB1818808.6A GB2579074B (en) | 2018-11-19 | 2018-11-19 | A self-supporting flexible thermal radiation shield |
PCT/EP2019/079516 WO2020104149A1 (en) | 2018-11-19 | 2019-10-29 | A self-supporting flexible thermal radiation shield for a superconducting magnet assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2022509785A JP2022509785A (ja) | 2022-01-24 |
JP7375013B2 true JP7375013B2 (ja) | 2023-11-07 |
Family
ID=64740137
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2021527245A Active JP7375013B2 (ja) | 2018-11-19 | 2019-10-29 | 超伝導磁石アセンブリ用の自立型可撓性熱放射シールド |
Country Status (7)
Country | Link |
---|---|
US (1) | US11703556B2 (ja) |
EP (1) | EP3884290A1 (ja) |
JP (1) | JP7375013B2 (ja) |
KR (1) | KR20210093895A (ja) |
CN (1) | CN113039451A (ja) |
GB (1) | GB2579074B (ja) |
WO (1) | WO2020104149A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2023164196A1 (en) * | 2022-02-28 | 2023-08-31 | Metox Technologies, Inc. | Susceptor assembly for a chemical vapor deposition reactor |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110041520A1 (en) | 2008-04-16 | 2011-02-24 | Erne Sergio Nicola | Cryostat and biomagnetic measurement system with radiofrequency shielding |
JP2011194136A (ja) | 2010-03-23 | 2011-10-06 | Hitachi Ltd | 超伝導磁石装置および磁気共鳴イメージング装置 |
JP2013000582A (ja) | 2011-06-13 | 2013-01-07 | General Electric Co <Ge> | 極低温剤容器を断熱するシステムおよび方法 |
JP2014220382A (ja) | 2013-05-08 | 2014-11-20 | 住友重機械工業株式会社 | 超電導磁石装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1378150A (fr) * | 1963-09-18 | 1964-11-13 | Comp Generale Electricite | Dispositif d'isolation thermique |
US3397720A (en) * | 1964-10-23 | 1968-08-20 | Hitco | Multiple layer insulation for a cryogenic structure |
GB2123219A (en) * | 1982-05-24 | 1984-01-25 | Int Research & Dev Co Ltd | Thermal insulation between parts of a rotor |
US5651256A (en) * | 1996-05-31 | 1997-07-29 | General Electric Company | Superconductive magnet having a thermal shield |
US5774032A (en) | 1996-08-23 | 1998-06-30 | General Electric Company | Cooling arrangement for a superconducting coil |
US6147579A (en) * | 1999-11-17 | 2000-11-14 | General Electric Company | Superconducting magnet non-uniform thermal insulation blankets |
US7548000B2 (en) | 2004-10-18 | 2009-06-16 | General Electric Company | Multilayer radiation shield |
GB2454571B (en) * | 2007-10-16 | 2009-10-21 | Siemens Magnet Technology Ltd | A method of constructing a thermal radiation shield in a cryostat |
GB2467596B (en) * | 2009-02-10 | 2011-01-12 | Siemens Magnet Technology Ltd | A thermal radiation shield, a cryostat containing a cooled magnet and an MRI system comprising a radiation shield |
US20100255277A1 (en) * | 2009-04-02 | 2010-10-07 | Xerox Corporation | Thermal insulating multiple layer blanket |
GB2484079B (en) * | 2010-09-28 | 2013-02-27 | Siemens Plc | A hollow cylindrical thermal shield for a tubular cryogenically cooled superconducting magnet |
GB2490478B (en) * | 2011-04-20 | 2014-04-23 | Siemens Plc | Superconducting magnets with thermal radiation shields |
US9575150B2 (en) * | 2011-07-20 | 2017-02-21 | Koninklijke Philips N.V. | Helium vapor magnetic resonance magnet |
GB2502980B (en) * | 2012-06-12 | 2014-11-12 | Siemens Plc | Superconducting magnet apparatus with cryogen vessel |
-
2018
- 2018-11-19 GB GB1818808.6A patent/GB2579074B/en active Active
-
2019
- 2019-10-29 WO PCT/EP2019/079516 patent/WO2020104149A1/en unknown
- 2019-10-29 JP JP2021527245A patent/JP7375013B2/ja active Active
- 2019-10-29 EP EP19801713.9A patent/EP3884290A1/en active Pending
- 2019-10-29 KR KR1020217014694A patent/KR20210093895A/ko not_active Application Discontinuation
- 2019-10-29 CN CN201980076027.XA patent/CN113039451A/zh active Pending
- 2019-10-29 US US17/294,744 patent/US11703556B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20110041520A1 (en) | 2008-04-16 | 2011-02-24 | Erne Sergio Nicola | Cryostat and biomagnetic measurement system with radiofrequency shielding |
JP2011194136A (ja) | 2010-03-23 | 2011-10-06 | Hitachi Ltd | 超伝導磁石装置および磁気共鳴イメージング装置 |
JP2013000582A (ja) | 2011-06-13 | 2013-01-07 | General Electric Co <Ge> | 極低温剤容器を断熱するシステムおよび方法 |
JP2014220382A (ja) | 2013-05-08 | 2014-11-20 | 住友重機械工業株式会社 | 超電導磁石装置 |
Also Published As
Publication number | Publication date |
---|---|
EP3884290A1 (en) | 2021-09-29 |
GB2579074B (en) | 2021-02-17 |
GB201818808D0 (en) | 2019-01-02 |
CN113039451A (zh) | 2021-06-25 |
US20220018918A1 (en) | 2022-01-20 |
WO2020104149A1 (en) | 2020-05-28 |
GB2579074A (en) | 2020-06-10 |
JP2022509785A (ja) | 2022-01-24 |
US11703556B2 (en) | 2023-07-18 |
KR20210093895A (ko) | 2021-07-28 |
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