A system and method for measuring a dose of ionizing radiation received by a pre-determined part of the body during radiotherapy or interventional procedures. The system comprises: a) a light guide, which under the influence of ionizing radiation undergoes measurable and quantifiable physical changes; b) a detector system which allows the recording and quantification of the signal emitted by the light guide; and c) a control unit which is adapted for calculating a dose of ionizing radiation previously or simultaneously received by the light guide on basis of said response signal. The light guide is coated over at least part of its length with a coating comprising a first component acting as a place dependent spectral filter and a second component including at least one luminescent material, dispersed in a transparent matrix. When exposed to radiation, the luminescent component will emit light with a spectrum depending on the chosen material.

A photon radiation detection systems utilizes scintillating fibers to detect downhole radioactivity along a wellbore. The system includes a light detection unit, extended light guide, and a scintillating fiber radiation detector extending along a wellbore. The scintillating fiber radiation detector may be a permanent part of the wellbore completion, or may be deployed via a downhole conveyance. The detected light photons may be utilized to evaluate the formation, cement layer or tubular string.

A borehole muon detector for detecting and characterizing a geographic region of interest is provided, the borehole muon detector comprising a housing and sensor, which is housed in the housing, the sensor including: a plurality of photodetector elements; at least one printed circuit board in electrical communication with the plurality of photodetectors and including an integrated electronic circuit for tracking time; a first helical bundle of scintillator fibers; an oppositely wound helical bundle of scintillator fibers, the oppositely wound helical bundle, the first helical bundle and the opposite helical bundle defining an outer cylinder, which includes a first end and a second end and a bore therebetween, each scintillator fiber of each bundle directly optically connected to a photodetector element at least at one end and indirectly optically connected to the photodetector element at no more than one end; and a plurality of scintillator bars, each comprising a first end, a second end and an optical fiber extending from the first end to the second end, the plurality of scintillator bars vertically disposed in the bore of the outer cylinder, each optical fiber of the scintillator bar optically directly connected to a photodetector element at least at one end and indirectly optically connected to the photodetector at no more than one end.

A detector and a method for tracking an arrival time of single particles in an ion beam are disclosed, wherein the single particles are provided as a bunch of ions by a synchrotron. Herein, the detector comprises a detector segment comprising a scintillating material, the scintillating material being designated for generating radiation upon passing of a single particle comprised by the bunch of ions through the scintillating material, wherein the scintillating material comprises a plurality of scintillating fibers, the scintillating fibers being provided as a fiber layer, wherein the fiber layer is located perpendicularly with respect to a direction of the incident ion beam; at least one detector element, the detector element being designated for generating a detector signal from the radiation; and at least one evaluation device, the evaluation device being designated for determining information about the single particles from the detector signals provided by the at least one detector element.

A radiation detector includes a wiring board, a first image sensor, a second image sensor, a first fiber optic plate, a second fiber optic plate, and a scintillator layer. The first fiber optic plate can guide light between a first light entering region and a first light exiting region. The second fiber optic plate can guide light between a second light entering region and a second light exiting region. One side of the first light entering region and one side of the second light entering region are in contact with each other. The first light exiting region is positioned on a first light receiving region. The second light exiting region is positioned on a second light receiving region. One side surface of a first side surface and one side surface of a second side surface exhibit shapes along each other and in contact with each other.

A plastic scintillating fiber capable of reducing modal dispersion and improving the accuracy of identifying a position which radiation passes through. A plastic scintillating fiber includes a core and a cladding that covers an outer periphery of the core and has a lower refractive index than the core. The core uniformly contains a radiation-emitting fluorescent agent and has a refractive index distribution where the refractive index of the core is highest at a center of a cross-section and becomes lower in a parabolic manner with distance from the center toward an outer periphery.

A measuring device includes an ionization chamber where air is contained and a measurement value relating to radiation including a neutron ray and a gamma ray is measured, a detector that detects a detection value relating to the neutron ray, and a controller that calculates a dose of the gamma ray based on the measurement value measured in the ionization chamber and the detection value detected by the detector.

Methods and systems for establishing a kinetic model input function (IF) in positron emission tomography and single-photon emission computed tomography are provided. A position of interaction along a scintillating fiber coil is determined by: detecting a first plurality and second plurality of photons at first and second ends of the scintillating fiber coil; associating the first plurality of photons and the second plurality of photons with the interaction event based on a timing parameter; and determining a position of interaction for the interaction event based on a comparison between a first parameter of the first plurality of photons and a second parameter of the photons in the second plurality of photons.

The present specification describes an X-ray detector that includes at least one scintillator screen for absorbing incident X rays and emitting corresponding light rays, a wavelength shifting sheet (WSS) coupled with the at least one scintillator screen for shifting the emitted light rays, at least one wavelength shifting fiber (WSF) coupled with at least one edge of the WSS for collecting the shifted light rays, and a photodetector for detecting the collected light rays.

A plastic scintillating fiber includes an organic compound containing an element with a neutron cross section larger than that of hydrogen, and includes: an outermost peripheral layer (1) containing a plastic material that emits scintillation light when it is irradiated with neutron radiation; a core (2) having a high refractive index, disposed inside the outermost peripheral layer (1), and containing at least one type of fluorescent substance that absorbs the scintillation light and wavelength-converts the absorbed light into light having a wavelength longer than that of the absorbed light; and a cladding layer (3) covering an outer peripheral surface of the core (2) and having a refractive index lower than that of the core (2). A wavelength shifting fiber including the core (2) and the cladding layer (3), and the outermost peripheral layer (1) covering an outer peripheral surface of the wavelength shifting fiber are integrally formed.