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Introduction
To begin with, we have chosen this topic due to the fact that silicon radiation detectors are one of the main type of particle detectors used in the radiation detection industry nowadays. Hence, it is crucial for an engineer in this field to know the history of silicon production as well as the development process and concrete examples of the different types of detectors.
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- Active area
- Dark current
- Capacitance
- Shunt resistance
To understand those characteristics, there is a short explanation for each.
Active area is a part of a sensor which contains the transistors, resistors and capacitors, and perform the actual detection and storage operations. Dark current is a small current which flows through the sensor because of the random generation of the disordered location of electrons and holes in the depletion region. Capacitance is an electrical characteristics which appears by applying an electrical charge to two conductive objects with a time period between them. Shunt resistance is a low-resistance connection between two points that forms an alternative path for a portion of the current.
Moreover, it is necessary to notice the operation characteristics to avoid the breakage of the sensor. Operating voltage and temperature, as well as storage temperature are crucial (Figure 5, Figure 6).
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