Efficient Charge Collection in Coplanar-Grid Radiation Detectors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10387109" target="_blank" >RIV/00216208:11320/18:10387109 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1103/PhysRevApplied.9.054020" target="_blank" >https://doi.org/10.1103/PhysRevApplied.9.054020</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevApplied.9.054020" target="_blank" >10.1103/PhysRevApplied.9.054020</a>

Result language

angličtina

Original language name

Efficient Charge Collection in Coplanar-Grid Radiation Detectors

Original language description

We model laser-induced transient-current waveforms in radiation coplanar-grid detectors. Poisson&apos;s equation is solved by the finite-element method and currents induced by a photogenerated charge are obtained using the Shockley-Ramo theorem. The spectral response on a radiation flux is modeled by Monte Carlo simulations. We show a 10x improved spectral resolution of the coplanar-grid detector using differential signal sensing. We model the current waveform dependence on the doping, depletion width, diffusion, and detector shielding, and their mutual dependence is discussed in terms of detector optimization. The numerical simulations are successfully compared to experimental data, and further model simplifications are proposed. The space charge below electrodes and a nonhomogeneous electric field on a coplanar-grid anode are found to be the dominant contributions to laser-induced transient-current waveforms.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project

<a href="/en/project/GA16-23165S" target="_blank" >GA16-23165S: Preparation of electric contacts on CdTe and CdZnTe radiation detectors</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Applied

ISSN

2331-7019

e-ISSN

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Volume of the periodical

9

Issue of the periodical within the volume

5

Country of publishing house

US - UNITED STATES

Number of pages

9

Pages from-to

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UT code for WoS article

000433002200004

EID of the result in the Scopus database

2-s2.0-85047529243