Simulation of the response of a diamond-based radiation detector to ultra-short and intense high-energy electron pulses

TL;DR

This paper presents a novel two-step simulation method combining TCAD-Sentaurus and LTspice to analyze the response of diamond-based radiation detectors to ultra-short, high-energy electron pulses, aiding their design for particle physics applications.

Contribution

It introduces a new simulation approach integrating electronic circuit effects with detector response, improving the design and optimization of diamond radiation detectors for intense radiation environments.

Findings

Good agreement between simulation and experimental data.

Effective modeling of detector response to ultra-short electron pulses.

Potential for optimizing detector design for collider environments.

Abstract

Single-crystal synthetic diamond sensors have been widely used in radiation dosimetry and beam diagnostics. The foreseen harsh radiation environment in electron-positron colliders at the luminosity frontier requires a thorough investigation of diamond's response to large radiation burst, in particular, to intense high-energy electron pulses. In this article, a two-step numerical simulation approach (Sentaurus~+~LTspice) is proposed to explore this topic. Time response of the diamond detector is simulated via TCAD-Sentaurus while the transmission effect of the electronic circuit is taken into account using LTspice. Good agreement is observed between results of the numerical simulation and preliminary experimental data from detector's exposure to high-energy sub-picosecond electron pulses, on both the amplitude and the shape of the induced signals. This simulation combination is a novel approach to designing and optimising diamond detectors for radiation and beam loss monitoring in particle physics experiments.