Gain suppression in LGAD detectors under focused and defocused femtosecond laser beam
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F10974938%3A_____%2F25%3A25_88_07" target="_blank" >RIV/10974938:_____/25:25_88_07 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.nima.2025.170844" target="_blank" >https://doi.org/10.1016/j.nima.2025.170844</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.nima.2025.170844" target="_blank" >10.1016/j.nima.2025.170844</a>
Alternative languages
Result language
angličtina
Original language name
Gain suppression in LGAD detectors under focused and defocused femtosecond laser beam
Original language description
Low Gain Avalanche Diodes (LGADs) are particle detectors with a moderate gain (< 50) optimized for high energy physics experiments. Gain in these sensors is controlled by bias voltage but it depends also on the other factors such as temperature and charge density generated in the gain layer. When the laser pulses are used to study LGADs, charge density strongly depends on the beam parameters. The same laser intensity can induce different charge density across the gain layer if the focusing parameters vary. It is known that higher ionization densities cause reduction of the gain and this effect has been already investigated. Here, we present extension of the previous gain suppression studies investigating not only spatial, but also temporal distribution of the laser pulses. In addition, we demonstrate gain suppression effect at two different wavelengths commonly used in characterization of the silicon detectors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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.)
Result continuities
Project
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Continuities
R - Projekt Ramcoveho programu EK
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN
0168-9002
e-ISSN
1872-9576
Volume of the periodical
1081
Issue of the periodical within the volume
1
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
5
Pages from-to
170844
UT code for WoS article
001541400100004
EID of the result in the Scopus database
2-s2.0-105011207905