Signal and charge collection efficiency of a p-type STC 3D-detector irradiated to sLHC-fluences, read out with 40 MHz

• Published in: Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Vol. 581; no. 1; pp. 322 - 325
• Main Authors: Eckert, S., Ehrich, T., Jakobs, K., Kühn, S., Parzefall, U., Boscardin, M., Piemonte, C., Ronchin, S.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 21.10.2007
• Subjects: Charge collection efficiency; n-in-p 3D detectors; Radiation damage; Radiation hardness; Silicon microstrip detectors; sLHC fluences; sLHC fluences; Charge collection efficiency; 29.40.−n; Silicon microstrip detectors; 61.82.Fk; 29.40.Gx; Radiation damage; Radiation hardness; 29.40.Wk; n-in-p 3D detectors
• ISSN: 0168-9002; 1872-9576
• DOI: 10.1016/j.nima.2007.07.134

Using ATLAS SCT front-end electronics, we have built a 3D prototype detector module which was then irradiated to a fluence of 1 × 10 15 n eq / cm 2 . After irradiation, the module was tested with an IR-laser yielding relative CCE measurements with high spatial resolution. Position-sensitive measurements are required, as from simulation the STC 3D-detector geometry is expected to have low-field regions with lower CCE. We report on the performance of the irradiated 3D-module read out at 40 MHz, compare it to the unirradiated behaviour and draw conclusions about the feasibility of using such detectors for tracking at the sLHC.