Directional wide-energy-range neutron monitor probe

A monitor and neutron technology, which is applied in the field of directional wide-energy neutron monitor probes, can solve the problems of no given orientation, wide-energy neutron monitor design, and low-energy response decline, and achieves ideal high-energy response and angle. Responsive effect

Inactive Publication Date: 2015-09-09
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
View PDF4 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The response is relatively consistent in the energy range of 2.4-14MeV, but adding a moderator to the front of the detector will inevitably lead to a decrease in the response of the low-energy section
[0006] It can be seen that the above-mentioned publicly reported technical solutions do not provide a directional, wide-energy neutron monitor design. From the design structure, some adopt the method of increasing the moderation depth to improve the high-energy neutron response, and some adopt the Adding Spallation Reaction Compensation Material to Improve High Energy Neutron Response

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Directional wide-energy-range neutron monitor probe
  • Directional wide-energy-range neutron monitor probe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Below in conjunction with accompanying drawing, the embodiment of the present invention is further described:

[0027] refer to figure 1 As shown, the structure and layout of a directional wide-energy neutron monitor probe are thermal neutron sensitive detector 1, inner moderator 2, proliferation layer 3, inner moderator 2, Reflective layer 4, inner moderator 2, absorber 5, outer moderator 6 and outer packaging 8. That is, the inner moderator 2 is embedded with a proliferation layer 3 and a reflection layer 4 .

[0028] The central thermal neutron sensitive detector 1 is a cylinder, located at the center of the neutron monitor probe, with a length of 10cm-40cm and an outer diameter of 12mm-80mm.

[0029] The proliferation layer 3 is in the shape of a barrel with an opening on the incident surface, embedded in the inner moderator 2 outside the thermal neutron detector, with a length of 10cm-40cm and a wall thickness of 3mm-20mm.

[0030] The reflective layer 4 is in t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a directional wide-energy-range neutron monitor probe, which is suitable for directional neutron place monitoring and metering transmission of high-energy accelerators and reactors. The probe includes a detector sensitive to thermal neutrons (1), an inner-layer moderator (2), a propagation layer (3), a reflecting layer (4), an absorber (5), an outer-layer moderator (6), a cadmium cap (7), an outer package (8), and a unidirectional plane of incidence (9). A neutron monitor adopted by the invention helps to solve the problems about on-site monitoring and magnitude transmission of high-energy and wide-spectrum neutron radiation fields. The neutron monitor probe is designed in a directional and moderated manner. Fissionable metal materials are embedded into the moderators, so a (n, f) fission reaction is utilized to widen the measuring range of high energy neutrons. Neutron reflective materials are embedded into the moderators, so angular response and energy response can be improved. The directional wide-energy-range neutron monitor probe has the characteristics of novel structure, wide monitored neutron energy range, good angular response feature and the like.

Description

technical field [0001] The invention relates to the technical field of neutron monitor probes, in particular to a directional wide-energy neutron monitor probe, which is applicable to neutron directional site monitors and metering transfers of high-energy accelerators and reactors. Background technique [0002] Neutron monitors, consisting of thermal neutron detectors placed in paraffin or polyethylene cavities, are commonly used to monitor neutron fluence rates. For example, the long neutron counter, because of its simplicity, reliability, strong directionality, good neutron energy response, and strong n and γ discrimination ability, is widely used as a secondary standard for neutron fluence rate measurement. plays an important role. [0003] The famous long neutron counters are Hanson and De Pangher type. The Hanson-type long neutron counter is mainly composed of BF 3 Proportional counter, inner and outer cylindrical paraffin moderator and B 2 o 3 Absorbent layer comp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/00
Inventor 李雅男李桃生M.穆罕默德吴宜灿
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap