JP6740467B2 - 中性子検出装置のための動作状態検証方法 - Google Patents
中性子検出装置のための動作状態検証方法 Download PDFInfo
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- JP6740467B2 JP6740467B2 JP2019514852A JP2019514852A JP6740467B2 JP 6740467 B2 JP6740467 B2 JP 6740467B2 JP 2019514852 A JP2019514852 A JP 2019514852A JP 2019514852 A JP2019514852 A JP 2019514852A JP 6740467 B2 JP6740467 B2 JP 6740467B2
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- 238000012795 verification Methods 0.000 title description 3
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- 238000001514 detection method Methods 0.000 claims description 24
- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 claims description 19
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- 229910052796 boron Inorganic materials 0.000 claims description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- UIWYJDYFSGRHKR-UHFFFAOYSA-N gadolinium atom Chemical compound [Gd] UIWYJDYFSGRHKR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- -1 polyethylene Polymers 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
- G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
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- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geophysics (AREA)
- Measurement Of Radiation (AREA)
Description
Claims (13)
- 中性子検出装置の動作状態を検証する方法であって、
a.熱中性子吸収材料を含む外壁を有する容器内に中性子検出器を含む中性子検出装置を少なくとも部分的に封入するステップと、
b.前記中性子検出装置の減衰された中性子計数率を決定するステップと、
c.前記中性子検出装置を前記容器から取り出すステップと、
d.前記中性子検出装置を宇宙線バックグラウンドから発生する中性子線に曝すステップと、
e.前記中性子検出装置の動作上の中性子計数率を決定するステップと、
f.前記動作上の中性子計数率と前記減衰された中性子計数率との間の比率を決定するステップと、
g.前記動作上の中性子計数率が前記減衰された中性子計数率よりも少なくとも所定の量、高く、かつ前記比率が所定の範囲内にある場合、前記中性子検出装置の前記動作状態を検証するステップと、を含む、方法。 - 前記熱中性子吸収材料は、ホウ素(B)、リチウム(Li)、カドミウム(Cd)、及びガドリニウム(Gd)のうちの少なくとも1つを含む、請求項1に記載の方法。
- 前記容器は、前記中性子検出器を少なくとも部分的に覆う前記熱中性子吸収材料を含む少なくとも1つの外壁を有する、請求項1に記載の方法。
- 前記所定の範囲は、4〜10である、請求項1に記載の方法。
- 前記中性子検出装置を宇宙線バックグラウンドから発生する中性子線に曝すステップの前に、前記中性子検出装置を中性子減速材装置と直接接触するように配置するステップをさらに含む、請求項1に記載の方法。
- 前記中性子検出装置の増強された中性子計数率を決定するステップと、
前記増強された中性子計数率と前記減衰された中性子計数率との間の比率を決定するステップと、をさらに含む、請求項5に記載の方法。 - 前記増強された中性子計数率と前記減衰された中性子計数率との間の差に基づいて前記中性子検出器の中性子検出効率を決定し、それによって、前記中性子検出装置を較正するステップをさらに含む、請求項6に記載の方法。
- 前記中性子減速材装置は、ポリエチレン(PE)、ポリメチルメタクリレート(PMMA)、及び水のうちの少なくとも1つを含む、請求項5に記載の方法。
- 前記中性子減速材装置は、半球形封入容器である、請求項5に記載の方法。
- 前記中性子減速材装置は、プレートである、請求項5に記載の方法。
- 前記中性子減速材装置は、鉛(Pb)、錫(Sn)、またはタングステン(W)のうちの少なくとも1つをさらに含む、請求項5に記載の方法。
- 前記減衰された中性子計数率を決定するステップは、建築物の最下部で実施され、
前記方法は、前記中性子減速材装置と直接接触している前記中性子検出装置を前記建築物の屋根の上またはその直下に配置するステップをさらに含む、請求項5に記載の方法。 - 前記熱中性子吸収材料を含む外壁を有する容器内に中性子検出装置を封入する前記ステップの後に、第1の位置と第2の位置との間の商用航空機に適切な高度で前記容器を飛行させるステップと、前記第2の位置で前記中性子検出装置を前記容器から取り出すステップと、前記中性子検出装置を中性子減速材装置に直接接触するように配置するステップと、その後、前記中性子検出装置を実質的に同一高度で飛行させて前記第1の位置に戻すステップと、をさらに含む、請求項1に記載の方法。
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US15/163,212 US9778384B1 (en) | 2016-05-24 | 2016-05-24 | Method of operational status verification for a neutron detecting device |
US15/163,212 | 2016-05-24 | ||
PCT/EP2017/062313 WO2017202794A1 (en) | 2016-05-24 | 2017-05-22 | Method of operational status verification for a neutron detecting device |
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JP2019520590A JP2019520590A (ja) | 2019-07-18 |
JP6740467B2 true JP6740467B2 (ja) | 2020-08-12 |
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US (1) | US9778384B1 (ja) |
EP (1) | EP3465279B1 (ja) |
JP (1) | JP6740467B2 (ja) |
CN (1) | CN109154673B (ja) |
CA (1) | CA3024006C (ja) |
WO (1) | WO2017202794A1 (ja) |
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US10942257B2 (en) | 2016-12-31 | 2021-03-09 | Innovusion Ireland Limited | 2D scanning high precision LiDAR using combination of rotating concave mirror and beam steering devices |
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US4047027A (en) * | 1975-06-10 | 1977-09-06 | Schlumberger Technology Corporation | Neutron well logging technique for gas detection |
JPH05297184A (ja) * | 1992-04-20 | 1993-11-12 | Toshiba Corp | ミキサセトラと、その中性子増倍率測定方法および中性子検出装置の校正方法 |
JP3263154B2 (ja) * | 1992-11-18 | 2002-03-04 | 株式会社東芝 | インライン中性子モニタの計数率評価法 |
JP2004212337A (ja) | 2003-01-08 | 2004-07-29 | Toshiba Corp | 放射線測定システム |
US7095329B2 (en) | 2003-03-26 | 2006-08-22 | Malcolm Saubolle | Radiation monitor for ease of use |
JP2005276360A (ja) | 2004-03-25 | 2005-10-06 | Renesas Technology Corp | 半導体デバイスのエラー評価支援方法および装置 |
WO2008021228A2 (en) * | 2006-08-11 | 2008-02-21 | Thermo Fisher Scientific Inc. | Bulk material analyzer assembly including structural beams containing radiation shielding material |
US7544927B1 (en) | 2006-08-28 | 2009-06-09 | Thermo Fisher Scientific Inc. | Methods and apparatus for performance verification and stabilization of radiation detection devices |
US20080087837A1 (en) * | 2006-10-11 | 2008-04-17 | Darin Desilets | Non-invasive method for measuring soil water content or snow water equivalent depth using cosmic-ray neutrons |
WO2012068057A2 (en) * | 2010-11-19 | 2012-05-24 | Schlumberger Technology Corporation | Neutron wellbore imaging tool |
ES2679522T3 (es) * | 2013-04-29 | 2018-08-28 | Decision Sciences International Corporation | Estaciones de matrices de detectores de muones |
CN104570048B (zh) * | 2014-12-29 | 2017-03-29 | 中国原子能科学研究院 | 一种天然中子能谱测量方法 |
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CN109154673B (zh) | 2022-04-19 |
WO2017202794A1 (en) | 2017-11-30 |
CA3024006A1 (en) | 2017-11-30 |
JP2019520590A (ja) | 2019-07-18 |
US9778384B1 (en) | 2017-10-03 |
EP3465279A1 (en) | 2019-04-10 |
CA3024006C (en) | 2022-08-23 |
CN109154673A (zh) | 2019-01-04 |
EP3465279B1 (en) | 2021-04-07 |
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