Low dose gamma irradiation study of ATLAS ITk MD8 diodes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00645355" target="_blank" >RIV/68378271:_____/25:00645355 - isvavai.cz</a>
Result on the web
<a href="https://hdl.handle.net/11104/0375169" target="_blank" >https://hdl.handle.net/11104/0375169</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/20/08/C08012" target="_blank" >10.1088/1748-0221/20/08/C08012</a>
Alternative languages
Result language
angličtina
Original language name
Low dose gamma irradiation study of ATLAS ITk MD8 diodes
Original language description
Silicon strip detectors developed for the Inner Tracker (ITk) of the ATLAS experiment will operate in a harsh radiation environment of the HL-LHC accelerator. The ITk is thus designed to endure a total fluence of 1.6 × 1015 1-MeV neq/cm2 and a total ionizing dose (TID) of 66 Mrad in the strip detector region. A radiation-hard n+-in-p technology is implemented in the ITk strip sensors. To achieve the required radiation hardness, extensive irradiation studies were conducted during sensor development, primarily performed up to the maximal expected total fluence and TID to ensure the full functionality of the detector at its end-of-life. These studies included irradiations of sensors with various particle types and energies, including the 60Co γ-rays. Our previous results obtained for γ-irradiated diodes and strip sensors indicate a linear increase of bulk current with TID, while the surface current saturates at the lowest TID levels checked (66 Mrad), preventing a determination of the exact TID for which the observed saturation occurs. This work presents the results coming from irradiations by 60Co γ-rays to multiple low TIDs, ranging from 0.5 to 100 krad. The detailed study of total, bulk, and surface currents of diodes explores an unknown dependence of surface current on the TID, annealing, and temperature. Additionally, the effect of the p-stop implant between the bias and the guard ring of measured samples is shown. The observations are relevant for the initial operations of the new ATLAS tracker.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
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
Journal of Instrumentation
ISSN
1748-0221
e-ISSN
1748-0221
Volume of the periodical
20
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
C08012
UT code for WoS article
001574276600001
EID of the result in the Scopus database
2-s2.0-105013385010