GB938994A - Device for measuring thermal neutron flux - Google Patents
Device for measuring thermal neutron fluxInfo
- Publication number
- GB938994A GB938994A GB6705/61A GB670561A GB938994A GB 938994 A GB938994 A GB 938994A GB 6705/61 A GB6705/61 A GB 6705/61A GB 670561 A GB670561 A GB 670561A GB 938994 A GB938994 A GB 938994A
- Authority
- GB
- United Kingdom
- Prior art keywords
- neutrons
- scatterer
- path
- detectors
- radiation
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/108—Measuring reactor flux
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
- G21C17/116—Passages or insulators, e.g. for electric cables
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Measurement Of Radiation (AREA)
Abstract
938,994. Detecting neutrons. ATOMIC ENERGY OF CANADA Ltd. Feb. 23, 1961 [April 15, 1960], No. 6705/61. Class 39 (4). Apparatus for detecting thermal neutrons comprises a thermal neutron detector positioned to receive substantially no direct radiation and a hydrogenous scatterer positioned and adapted to scatter thermal neutrons. The apparatus may be used for measuring the thermal neutron flux of a nuclear reactor to give a measure of its power. As shown in Fig. 1 a path 10 for radiation may be provided in the concrete shield 11 of the reactor and may be lined with a steel liner 12 and with a boron-aluminium lining 13 which absorbs thermal neutrons and prevents activation of the steel and concrete. The scatterer 14 comprises two sheets of polystyrene arranged at 45 degrees to the path of radiation and the thermal neutron detectors 20, 21 are situated in recesses to the side of the path; lead gamma ray shields 22, 23 are arranged in front of the detectors and polythene reflectors 24, 25 are arranged behind the detectors. Thus thermal neutrons from path 10 are reflected into the detectors whilst fast neutrons and gamma rays pass through the scatterer 14 into a beam catcher chamber 17 designed to minimize reflection of radiation. The scatterer may be of other hydrogenous material such as polythene, water, hydrocarbon substances, or ice.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US2262660A | 1960-04-15 | 1960-04-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB938994A true GB938994A (en) | 1963-10-09 |
Family
ID=21810575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB6705/61A Expired GB938994A (en) | 1960-04-15 | 1961-02-23 | Device for measuring thermal neutron flux |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1284356A (en) |
| GB (1) | GB938994A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10964438B2 (en) * | 2017-05-31 | 2021-03-30 | Atomic Energy Of Canada Limited / Energie Atomique Du Canada Limitee | System and method for stand-off monitoring of nuclear reactors using neutron detection |
| CN113724908A (en) * | 2021-08-11 | 2021-11-30 | 散裂中子源科学中心 | Thermal neutron beam shaping device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113866818B (en) * | 2021-10-14 | 2023-11-21 | 中国核动力研究设计院 | Device and method for calibrating neutron sensitivity of off-stack detector |
-
1961
- 1961-02-23 GB GB6705/61A patent/GB938994A/en not_active Expired
- 1961-03-20 FR FR856177A patent/FR1284356A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10964438B2 (en) * | 2017-05-31 | 2021-03-30 | Atomic Energy Of Canada Limited / Energie Atomique Du Canada Limitee | System and method for stand-off monitoring of nuclear reactors using neutron detection |
| US11742101B2 (en) * | 2017-05-31 | 2023-08-29 | Atomic Energy Of Canada Limited / Énergie Atomique Du Canada Limitée | System and method for stand-off monitoring of nuclear reactors using neutron detection |
| CN113724908A (en) * | 2021-08-11 | 2021-11-30 | 散裂中子源科学中心 | Thermal neutron beam shaping device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1284356A (en) | 1962-02-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3707631A (en) | Nuclear fuel assay system | |
| CN104575646A (en) | Movable type DT neutron radiation shielding device used for detecting explosives | |
| US3532883A (en) | Moisture determination in solids by neutron radiation | |
| US3524062A (en) | Apparatus for measuring the moisture content and density of the soil | |
| US4494001A (en) | Detection of concealed materials | |
| US6134289A (en) | Thermal neutron detection system | |
| GB938994A (en) | Device for measuring thermal neutron flux | |
| US3600578A (en) | Reactor power level sensing device using cherenkov radiation | |
| GB1044713A (en) | Method and device for neutron radiography | |
| US2967937A (en) | Method and apparatus for measuring thickness | |
| GB1252230A (en) | ||
| US3126481A (en) | Thermal neutron measuring device for | |
| CN108344757A (en) | The device of talcum powder content in a kind of detection flour | |
| GB1156342A (en) | Testing for Fuel Element Sheathing Failures in Nuclear Reactors | |
| GB1180450A (en) | Arrangements for Determining the Moisture Content of Solid Substances by means of Neutron Irradiation | |
| Nakashima et al. | Gamma-ray energy spectra observed around a nuclear reactor | |
| CN208367221U (en) | A kind of nuclear radiation shield bracket used on transporting belt | |
| GB1124584A (en) | Improvements in or relating to radiographic examinations using neutrons | |
| Nichol et al. | A versatile tangential irradiation facility | |
| Jensen et al. | A moderating 6Li-glass neutron detector | |
| JPS54141186A (en) | Radiation detector | |
| POINT | 7 To7o-ln oi AMETERJ | |
| Mattingly et al. | Physics design of fissile mass-flow monitoring system | |
| GB1197099A (en) | Method and device for the Non-Destructive Control of Nuclear Fuels | |
| SU569204A1 (en) | Method of measuring thickness of lining of thermal sets |