The invention discloses a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam.

A flexible DR detector assembly bendable along one axis and not bendable along a second axis is used with an x-ray source for radiographic imaging of a human anatomy, veterinary anatomy, or industrial equipment.

A radiation detector module including a scintillator element configured to generate optical signals in response to incident radiation. A photodetector is coupled to at least a first surface of the scintillator element, the photodetector configured to convert the optical signals into output characterizing the radiation. An acoustic array is coupled to at least a second surface of the scintillator element, the acoustic array configured to convert acoustic signals generated in the scintillator element into output characterizing acoustic energy deposited therein.

The present invention relates to a method and apparatus for detecting radioactivity. In particular, but not exclusively, the present invention relates to the detection of radioactivity in a target fluid in a fluid communication passageway using a region of scintillator material (130) to provide light responsive to the presence of radioactive material and at least one silicon photomultiplier (SiPM) (150) for providing an output signal responsive to the light provided by the scintillator material.

A detector array for a radiation system includes a radiation detection sub-assembly, a routing sub-assembly, and an electronics sub-assembly. The routing sub-assembly is disposed between the radiation detection sub-assembly and the electronics sub-assembly and includes one or more layers of shielding material. For example, the routing sub-assembly may include a printed circuit board having embedded therein a shielding material configured to shield the electronics sub-assembly from at least some radiation. In some embodiments, the shielding material defines at least one opening through which a conductive element(s) passes to deliver signals between the radiation detection sub-assembly and the electronics sub-assembly.

A radiation-sensing device is provided. The radiation-sensing device includes a substrate, a first scintillator layer, a second scintillator layer, and an array layer. The first scintillator is disposed on a first side of the substrate, and includes a plurality of first blocking walls and a plurality of first scintillator elements. The plurality of first scintillator elements are located between the plurality of first blocking walls. The second scintillator layer is disposed on a second side of the substrate, and the second side is opposite to the first side. The array layer is located between the first scintillator layer and the second scintillator layer, and has a plurality of photosensitive elements. In addition, a projection of at least one of the plurality of first blocking walls on the substrate overlaps with a projection of at least one of the plurality of photosensitive elements on the substrate.

A radiation backscatter detector assembly comprising: a source array comprising source components (110, 115) for irradiating a shared sample location, at least two source components of the array generating radiation in different respective source energy bands; a detector array comprising detector elements (500, 220) for detecting backscattered radiation detection events from different respective spatial portions of the shared sample location, the detector elements each generating a pulse output in response to each radiation detection event it detects; and an energy meter (325) for measuring the energies of the pulse outputs by different respective detector elements.

Disclosed herein are a scanning method and apparatus suitable for scanning a pipeline or process vessel in which a beam of gamma radiation from a source is emitted through the vessel to be detected by an array of detectors which are each collimated to detect radiation over a narrow angle relative to the width of the emitted radiation beam.

A dual or multi-energy range x-ray image sensor is implemented as side-by-side pixel arrays on a planar and monolithic semiconductor substrate as part of an x-ray object detector. Each pixel array in this side-by-side monolithic arrangement is designed to be responsive to a particular x-ray energy range or spectrum (i.e. a high-energy (HE) range or a low-energy (LE) range) to provide high object sensitivity and material discrimination capabilities. The side-by-side monolithic construction of pixel arrays improves alignment and spacing precision for improved image alignment among different arrays specialized in detecting different energy levels and signatures. Furthermore, integrated signal processing circuitry, placed on a radiation-shielded periphery of the pixel arrays, enables improved detection performance with enhanced noise reduction and/or sensitivity. This novel configuration is scalable by increasing the number of side-by-side and monolithically-placed pixel arrays, each of which is specialized in detecting a specific energy range from a scanned object.

Disclosed is a directional gamma ray or neutron detector that locates a source both horizontally and vertically. In some embodiments, the detector comprises four rod scintillators around a shield, and an orthogonal panel scintillator mounted frontward of the rod scintillators. The azimuthal angle of the source may be calculated according to the detection rates of the rod scintillators, while the polar angle of the source may be calculated from the panel scintillator rate using a predetermined angular correlation function. Thus, the exact location of the source can be found from a single data set without iterative rotations. Embodiments of the detector enable rapid detection and precise localization of clandestine nuclear and radiological weapons in applications ranging from hand-held survey meters and walk-through portals, to vehicle cargo inspection stations and mobile area scanners. Such detectors are needed to detect clandestine nuclear weapons worldwide.