Novel method to assess the electromagnetic radiation damage using HGCAL silicon sensors

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F25%3A00386926" target="_blank" >RIV/68407700:21340/25:00386926 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1088/1748-0221/20/07/C07061" target="_blank" >https://doi.org/10.1088/1748-0221/20/07/C07061</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1748-0221/20/07/C07061" target="_blank" >10.1088/1748-0221/20/07/C07061</a>

Result language

angličtina

Original language name

Novel method to assess the electromagnetic radiation damage using HGCAL silicon sensors

Original language description

Studies of the silicon dioxide (SiO2) passivation layer in n-on-p silicon sensors, which will be used in the CMS High Granularity Calorimeter (HGCAL), are important for improving their performance not only at the High-Luminosity LHC, but also at future high-energy physics experiments. This work explores a novel method for estimating the effect of surface radiation damage on inter-pad isolation in HGCAL sensors by measuring the threshold voltage for inter-electrode isolation V-th,V-iso. Test diodes with different SiO2 variants are irradiated with X-rays, and their characteristics are measured at a controlled temperature of -20 degrees C. The results are then compared with previous measurements with MOS and strip-like sensors. Three measurement techniques - CV, IV, and interstrip like resistance measurements - are employed to extract V-th,V-iso. Among these, the CV-based extraction method is found to be the most robust. The results show an unexpected dependence of V-th,V-iso on the ionising dose, which has not been observed before. Possible explanations for the observed behaviour are also discussed.

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

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

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

Name of the periodical

Journal of Instrumentation

ISSN

1748-0221

e-ISSN

1748-0221

Volume of the periodical

20

Issue of the periodical within the volume

7

Country of publishing house

IT - ITALY

Number of pages

8

Pages from-to

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UT code for WoS article

001540782600001

EID of the result in the Scopus database

2-s2.0-105011869851