摘要:
The disclosure provides a detector, and a detecting system and method for dividing energy regions intelligently. The detecting method may comprise: collecting, by a detector, rays transmitted through a detected object and generating a detection signal according to the rays; wherein each column of pixels of the detector comprises one class-A electrode and a plurality of class-B electrodes, and the class-A electrode and the class-B electrodes are arranged sequentially in a moving direction of the detected object, such that the rays transmitted through the detected object firstly enter into the class-A electrode and then into the class-B electrodes; obtaining image data of the detected object based on the detection signal corresponding to the class-A electrode, and estimating a material component of the detected object based on the image data; adjusting one or more thresholds for dividing the energy regions according to the estimated material component; and determining energy regions to which the detection signal corresponding to the class-B electrodes belongs, according to the adjusted one or more thresholds, and calculating a number of signals in each energy region, so as to obtain the image data of the detected object and determine components of the detected object accurately.
摘要:
The present disclosure provides a device for mixing or multiplying frequency, including: a metal housing including a box body and a cover buckled together to define a metal cavity; and at least one frequency conversion unit including: a microstrip line located in the metal cavity; and a channel structure including a radio frequency signal input channel, a local oscillator signal input channel and a signal output channel, the radio frequency signal input channel, the local oscillator signal input channel and the signal output channel pass through the metal housing and are coupled to the microstrip line respectively, wherein the signal output channel is led out at an angle with respect to a plane where the microstrip line is located.
摘要:
The present disclosure provides a semiconductor detector. The semiconductor detector comprises: a detector crystal including a crystal body (3), an anode and a cathode; a field enhance electrode (1) for applying a voltage to the detector crystal; an insulating material (2) disposed between the field enhanced electrode (1) and a surface of the detector crystal (3). The semiconductor detector further comprises a field enhanced electrode circuit board having a bottom connection layer in contact with the surface of the detector crystal and a top layer opposite to the bottom connection layer, wherein the top layer is connected to a high voltage input terminal of the semiconductor detector, and an insulating material is provided between the bottom connection layer and the detector surface of the detector crystal.
摘要:
There is provided a semiconductor detector (100). According to an embodiment, the semiconductor detector may include a semiconductor detection material (101) including a first side (101S-1) and a second side (101S-2) opposite to each other, a cathode (103) disposed on the first side, and an anode (105) disposed on the second side. The anode includes an array of pixel anodes (201) defining detection pixels of the semiconductor detector, and intermediate anodes (203) disposed between adjacent ones of the pixel anodes. According to an embodiment of the present disclosure, it is possible to achieve signal correction to improve the energy resolution and the signal-to-noise ratio of the detector.
摘要:
The present disclosure provides a device for mixing or multiplying frequency, including: a metal housing including a box body and a cover buckled together to define a metal cavity; and at least one frequency conversion unit including a microstrip line located in the metal cavity, and a channel structure including a radio frequency signal input channel, a local oscillator signal input channel and a signal output channel, the radio frequency signal input channel, the local oscillator signal input channel and the signal output channel pass through the metal housing and are coupled to the microstrip line respectively, wherein at least two of a plane where the radio frequency signal input channel is located, a plane where the local oscillator signal input channel is located and a plane where the signal output channel is located are not coplanar.
摘要:
The present disclosure provides a terahertz detector. The terahertz detector includes a planar array structure that is constituted by a plurality of pixel units, the plurality of pixel units each comprise N sub pixels and each of the sub pixels comprises no more than one signal trigger configured to transform a terahertz signal to an electrical current pulsing signal, and each of the plurality of pixel units detects a signal that is a sum of the electrical current pulsing signals of the N sub pixels, where N is an integer greater than 1.
摘要:
A photodiode device, a photodiode detector, and methods of fabricating the same are disclosed. According to an embodiment, a method of fabricating a photodiode device may include: growing an epitaxial layer on a first surface of a substrate, wherein the epitaxial layer is first type lightly doped; forming, in the substrate, a first type heavily doped region in contact with the first type lightly doped epitaxial layer; thinning the substrate from a second surface of the substrate opposite to the first surface to expose the first type heavily doped region; patterning the first type heavily doped region from the second surface side of the substrate to form a trench therein, that penetrates through the first type heavily doped region and extends into the epitaxial layer, wherein the patterned first type heavily doped region serves as a first electrode region of the photodiode device; and forming a second type heavily doped region at bottom of the trench, wherein the second type heavily doped region serves as a second electrode region of the photodiode device.
摘要:
The present disclosure provides an apparatus for processing signals for a plurality of energy regions, and a system and method for detecting radiation of a plurality of energy regions. The apparatus for processing signals for a plurality of energy regions may comprise: a first processor, configured to receive a signal from a detector and process the received signal to generate a gated signal, wherein a turn-on period of the gated signal represents magnitude of the received signal; and a second processor, configured to receive the gated signal from the first processor, and determine one of the plurality of energy regions to which the received signal belongs according to the turn-on period of the gated signal, so as to count signals within the determined energy region.