Effect of irradiation and annealing performed with bias voltage applied across the coupling capacitors on the interstrip resistance of ATLAS ITk silicon strip sensors

0570817 - FZÚ 2024 RIV NL eng J - Journal Article
Kroll, Jiří - Allport, P. P. - Chisholm, A. - Dudáš, D. - Fadeyev, V. - George, W. - Gonella, L. - Kopsalis, I. - Kvasnička, Jiří - Latoňová, Věra - Lomas, J. - Martinez-Mckinney, F. - Mikeštíková, Marcela - Shi, X. - Tůma, Pavel - Ullan, M. - Unno, Y.
Effect of irradiation and annealing performed with bias voltage applied across the coupling capacitors on the interstrip resistance of ATLAS ITk silicon strip sensors.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 1047, Feb (2023), č. článku 167726. ISSN 0168-9002. E-ISSN 1872-9576
R&D Projects: GA MŠMT(CZ) LTT17018; GA MŠMT(CZ) LM2018104
Institutional support: RVO:68378271
Keywords : ATLAS inner tracker * silicon strip sensors * gamma irradiation * annealing
OECD category: Particles and field physics
Impact factor: 1.4, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.nima.2022.167726

The powering configuration of the silicon strip modules developed for the new Inner Tracker of the ATLAS experiment includes a voltage of up to 0.5 V across the coupling capacitor of each individual strip. However, this voltage is usually not applied in the sensor irradiation studies due to the significant technical and logistical complications. To study the effect of an irradiation and a subsequent beneficial annealing on the strip sensors in real experimental conditions, four prototype ATLAS17LS miniature sensors were irradiated by 60Co source and annealed, both with and without the bias voltage of 0.5 V applied across the coupling capacitors. The values of interstrip resistance measured on irradiated samples before and after annealing indicate that increase of radiation damage caused by the applied voltage can be compensated by the presence of this voltage during annealing.
Permanent Link: https://hdl.handle.net/11104/0342156