Radiation effects of CERN-PS 24 GeV/c protons in silicon strip sensors, evaluated with ATLAS18 ITk strip sensor test structures

Mandić, Igor (author), Mikuž, Marko (author)

Test structures from the ATLAS18 ITk strip detector wafers were irradiated with 24 GeV/c protons. These test structures were positioned at various angles with respect to the proton beam. Blocks of G10 material were placed in front of these test structures to study the effect of scattering of primary protons on the received particle fluence. The results confirm that both the incidence angle of the beam and scattering significantly influence the actual fluence to which the samples are exposed. Miniature strip detectors, first irradiated with protons, were also irradiated with reactor neutrons, to a combined fluence of ɸ$_{neq}$ = 1.6 × 10$^{15}$ cm$^{−2}$. The combination of proton and neutron fluences matched the combination expected in the most exposed part of the strip detector in the ALTAS Inner Tracker (ITk). Good charge collection was measured confirming that the strip detectors are sufficiently radiation hard for successful operation to highest fluences expected at the HL-LHC.

• Language: English
• Keywords: hadron collider, atlas experiment, silicon strip sensors, silicon strip detectors, charge collection, radiation hardness
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FMF - Faculty of Mathematics and Physics
• Publication status: Published
• Publication version: Version of Record
• Year: 2026
• Number of pages: 9 str.
• Numbering: Vol. 1082, pt. 1, art. 170917
• PID: 20.500.12556/RUL-182623
• UDC: 539.1
• ISSN on article: 1872-9576
• DOI: 10.1016/j.nima.2025.170917
• COBISS.SI-ID: 247669251
• Publication date in RUL: 19.05.2026

Record is a part of a journal

• Title: Nuclear instruments and methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment
• Shortened title: Nucl. instrum. methods phys. res., Sect. A, Accel., spectrom. detect. assoc. equip.
• Publisher: Elsevier
• ISSN: 1872-9576
• COBISS.SI-ID: 175267331

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: senzorji, hadronski trkalnik, eksperiment Atlas, sevanje