2D position sensitive microstrip sensors with charge division along the strip: Studies on the position measurement error

Abstract

a b s t r a c tPosition sensitivity in semiconductor detectors of ionizing radiation is usually achieved by the segmentation of the sensing diode junction in many small sensing elements read out separately as in the case of conventional microstrips and pixel detectors. Alternatively, position sensitivity can be obtained by splitting the ionization signal collected by one single electrode amongst more than one readout channel with the ratio of the collected charges depending on the position where the signal was primary generated. Following this later approach, we implemented the charge division method in a conventional microstrip detector to obtain position sensitivity along the strip. We manufactured a proofof-concept demonstrator where the conventional aluminum electrodes were replaced by slightly resistive electrodes made of strongly doped poly-crystalline silicon and being readout at both strip ends. Here, we partially summarize the laser characterization of this first proof-of-concept demonstrator with special emphasis on the study on how the different noise sources are affecting the device position error along the strip.

An improved method of energy calibration for position-sensitive silicon detectors

“…This assumption is confirmed by a test in Ref. [10]. So the output energies E 1 and E 2 corresponding to this center are equal.…”

“…1), namely the maximum of noise distribution density, is situated at the middle of a strip [2]. This assumption is confirmed by a test in reference [10]. So the output energies E 1 and E 2 corresponding to this center are equal.…”

“…Three types of noise are presented for a similar detector in reference [10], i.e., the noise from the input transistor of the amplifier, thermal noise from the resistive layer and shot noise produced by the leakage current of the detector, which is mainly caused by radiation damage. The amplifier noise and shot noise are larger at the ends of the strip than at its center [10]. Because the detector tested here is old enough and the radiation damage is rather serious, shot noise is assumed to be the main reason leading to this distortion.…”

Numerical Analysis for Appropriate Positioning of Ferrous Wear Debris Sensors with Permanent Magnet in Gearbox Systems

“…Most studies suggest methods to analyze or eliminate the causes of the sensor position errors [21][22][23][24][25][26][27][28][29][30][31]. Research has also been conducted to improve technology for analyzing wear particles.…”