Abstract
A particle detection chain based on a CMOS SOI VCO circuit associated to a matrix of detection is presented. The solution is optimized for the recognition and tracking of various particles. Two ions are considered: an alpha and an aluminum. These two ions were chosen because there are very different in terms of energy and LET variations.
Highlights
EMICONDUCTOR radiation detectors, called solid-state detectors, can be classified into several categories, depending on the application field and the particles to be detected
A new approach based on the use of a ring oscillator was developed [10]. This approach is based on the reading of the information related to indirect output parameters of the detection chain signal, instead of directly measuring the current from the sensor
The VCO chain is composed of three parts: a CMOS based pixel detector, a shaping circuit based on a Voltage Controlled ring Oscillator (VCO) and a system for frequency and magnitude detection
Summary
EMICONDUCTOR radiation detectors, called solid-state detectors, can be classified into several categories, depending on the application field and the particles to be detected. The knowledge of the generated current shape at the output of the detector allows easier post processing of the signal In this context, a new approach based on the use of a ring oscillator was developed [10]. A new approach based on the use of a ring oscillator was developed [10] This approach is based on the reading of the information related to indirect output parameters of the detection chain signal (i.e. voltage variation), instead of directly measuring the current from the sensor. This solution avoids most of the design problems described upper. The advantage of this solution is a direct recognition of the signal shape as an amplitude modulation of the VCO output frequency
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