Defect investigation in irradiated ATLAS18 ITk Strip Sensors using transient spectroscopy techniques

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00640827" target="_blank" >RIV/68378271:_____/25:00640827 - isvavai.cz</a>

Result on the web

<a href="https://hdl.handle.net/11104/0375146" target="_blank" >https://hdl.handle.net/11104/0375146</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.nima.2025.170713" target="_blank" >10.1016/j.nima.2025.170713</a>

Result language

angličtina

Original language name

Defect investigation in irradiated ATLAS18 ITk Strip Sensors using transient spectroscopy techniques

Original language description

With the upgrade of the LHC to the High-Luminosity LHC (HL-LHC), the Inner Detector will be replaced with the new all-silicon ATLAS Inner Tracker (ITk). Comprising an active area of 165 m2, the outer detector layers will host strip modules, built with single-sided micro-strip sensors. The ATLAS18 main sensors were tested at different institutes in the collaboration for mechanical and electrical compliance with technical specifications, while technological parameters were verified on test structures from the same wafers before and after irradiation. Diodes fabricated as test structures were studied using variants of Deep-Level Transient Spectroscopy (DLTS). Irradiated diode samples were measured with Current-DLTS, using both electrical and photo-induced injection. Utilizing DLTS spectra with varying test parameters, trap energy levels and cross-sections associated with defects were obtained. This was done to improve the precision of sensor simulations as well as to compile a more complete model of radiation damage in ITk Strip Sensors. Moreover, previously observed features such as an increasing trend in the full depletion voltage after irradiation and little beneficial annealing in charge collection after high fluence irradiation of high energy protons were also investigated. Results obtained for samples with radiation damage from different sources at various fluences were compared.

Czech name

—

Czech description

—

Type

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

CEP classification

—

OECD FORD branch

10303 - Particles and field physics

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

Publication year

2025

Confidentiality

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

Name of the periodical

Nuclear Instruments & Methods in Physics Research Section A

ISSN

0168-9002

e-ISSN

1872-9576

Volume of the periodical

1080

Issue of the periodical within the volume

Nov

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

5

Pages from-to

170713

UT code for WoS article

001516238500003

EID of the result in the Scopus database

2-s2.0-105008215293