Investigations into the impact of bond pads and p-stop implants on the detection efficiency of silicon micro-strip sensors

Poley, Luise; Diez, Sergio; Benoit, Mathieu; Lohwasser, Kristin; Phillips, Peter W.; Lacasta, Carlos; Sperlich, Dennis; Gallop, Bruce; Sawyer, Craig; Stegler, Martin; Pape, Ian; Milovanovic, Marko; Unno, Yoshinobu; Yildirim, Eda; Fadeyev, Vitaliy; Rehnisch, Laura; Maneuski, Dzmitry; Keller, John; Gregor, Ingrid-Maria; Blue, Andrew; Warren, Matt; Greenall, Ashley; Meng, Lingxin; Bloch, Ingo

Preprint/Report

PUBDB-2017-01384

Investigations into the impact of bond pads and p-stop implants on the detection efficiency of silicon micro-strip sensors

Poley, L. (Corresponding author) ; Lohwasser, K. ; Blue, A. ; Benoit, M. ; Bloch, I. ; Diez, S. ; Fadeyev, V. ; Gallop, B. ; Greenall, A. ; Gregor, I.-M. ; Keller, J. ; Lacasta, C. ; Maneuski, D. ; Meng, L. ; Milovanovic, M. ; Pape, I. ; Phillips, P. W. ; Rehnisch, L. ; Sperlich, D. ; Sawyer, C. ; Stegler, M. ; Unno, Y. ; Warren, M. ; Yildirim, E.

2016

[10.3204/PUBDB-2017-01384]

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Please use a persistent id in citations: doi:10.3204/PUBDB-2017-01384

Report No.: DESY-16-218; arXiv:1611.06114

Abstract: The High Luminosity Upgrade of the LHC will require the replacement of the Inner Detector of ATLAS with the Inner Tracker (ITk) in order to cope with higher radiation levels and higher track densities. Prototype silicon strip detector modules are currently developed and their performance is studied in both particle test beams and X-ray beams. In previous test beam studies of prototype modules, silicon sensor strips were found to respond in regions varying from the strip pitch of 74.5 $\mu m$. The variations have been linked to local features of the sensor architecture. This paper presents results of detailed sensor measurements in both X-ray and particle beams investigating the impact of sensor features (metal pads and p-stops) on the responding area of a sensor strip.

Keyword(s): semiconductor detector: microstrip ; X-ray: irradiation ; charged particle: irradiation ; performance ; ATLAS ; radiation: damage