Characterizing the Timing Performance of a Fast 4H-SiC Detector With an <formula formulatype="inline"><tex Notation="TeX">$^{241}$</tex> </formula>Am Source

Abstract

An SPX4 4H-silicon carbide detector consisting of 4 × 4 pixels was developed and studied experimentally. Its pixel size is 400 × 400 μm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . A timing resolution of 117 ± 11 ps full width at half-maximum (FWHM) has been measured for the detection of alphas. With such good timing performance and high granularity, the SiC pixel detector holds great promise as an associated alpha-particle detector for fast neutron imaging.