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1. WO2012106730 - DUAL MODE X-RAY SCANNING SYSTEM

Publication Number WO/2012/106730
Publication Date 09.08.2012
International Application No. PCT/US2012/024182
International Filing Date 07.02.2012
IPC
G01N 23/087 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/-G01N17/178
02by transmitting the radiation through the material
06and measuring the absorption
083the radiation being X-rays
087using polyenergetic X-rays
CPC
G01N 23/083
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00G01N17/00, G01N21/00 or G01N22/00
02by transmitting the radiation through the material
06and measuring the absorption
083the radiation being X-rays
G01N 23/087
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
23Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00G01N17/00, G01N21/00 or G01N22/00
02by transmitting the radiation through the material
06and measuring the absorption
083the radiation being X-rays
087using polyenergetic X-rays
G01V 5/0016
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
5Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
0008Detecting hidden objects, e.g. weapons, explosives
0016Active interrogation, i.e. using an external radiation source, e.g. using pulsed, continuous or cosmic rays
G01V 5/0041
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
5Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
0008Detecting hidden objects, e.g. weapons, explosives
0016Active interrogation, i.e. using an external radiation source, e.g. using pulsed, continuous or cosmic rays
0041Multiple energy techniques using one type of radiation, e.g. X-rays of different energies
G01V 5/0069
GPHYSICS
01MEASURING; TESTING
VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
5Prospecting or detecting by the use of nuclear radiation, e.g. of natural or induced radioactivity
0008Detecting hidden objects, e.g. weapons, explosives
0016Active interrogation, i.e. using an external radiation source, e.g. using pulsed, continuous or cosmic rays
0069Measuring induced radiation, e.g. thermal neutron activation analysis
Applicants
  • RAPISCAN SYSTEMS, INC. [US]/[US] (AllExceptUS)
  • MORTON, Edward, James [GB]/[GB] (UsOnly)
Inventors
  • MORTON, Edward, James
Agents
  • ANSARI, Hazim
Priority Data
61/440,83508.02.2011US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) DUAL MODE X-RAY SCANNING SYSTEM
(FR) SYSTÈME DE BALAYAGE À RAYONS X BIMODAL
Abstract
(EN) A variable mode X-ray transmission system is provided that can be operated in low or high dose rate modes depending upon the area or portion of the vehicle to be screened. In one embodiment, variable dose rate is achieved by use of a novel collimator. The systems disclosed in this application enable the scanning of a vehicle cab portion (occupied by people, such as a driver) at low dose rate, which is safe for human beings, while allowing the scanning of the cargo portion (unoccupied by people) at a high dose rate. Rapid switching from low dose rate to high dose rate operating mode is provided, while striking a balance between high material penetration for cargo portion and low intensity exposure that is safe for occupants in the cab portion of the inspected vehicle.
(FR) L'invention porte sur un système d'émission de rayons X, à mode variable, qui peut fonctionner dans des modes à débit de dose faible ou élevé, en fonction de la zone ou de la partie du véhicule à examiner. Dans un mode de réalisation, un débit de dose variable est obtenu par l'utilisation d'un nouveau collimateur. Les systèmes selon l'invention permettent le balayage d'une partie de cabine de véhicule (occupée par des personnes, telles qu'un conducteur) à un faible débit de dose, qui est sans danger pour des êtres humains, tout en permettant le balayage de la partie de chargement (inoccupée par des personnes) à un débit de dose élevé. Une commutation rapide entre les modes de fonctionnement à faible débit de dose et à débit de dose élevé est fournie, tout en produisant un équilibre entre une pénétration de matériau élevée pour la partie de chargement et une exposition de faible intensité qui est sans danger pour des occupants dans la partie de cabine du véhicule inspecté.
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