Year: 2017
Type: article
Abstract: To cope with the High Luminosity LHC harsh conditions, the ATLAS inner tracker has to be upgraded to meet requirements in terms of radiation hardness, pile up and geometrical acceptance. The active edge technology allows to reduce the insensitive area at the border of the sensor thanks to an ion etched trench which avoids the crystal damage produced by the standard mechanical dicing process. Thin planar n-on-p pixel sensors with active edge have been designed and produced by LPNHE and FBK foundry. Two detector module prototypes, consisting of pixel sensors connected to FE-I4B readout chips, have been tested with beams at CERN and DESY. In this paper the performance of these modules are reported. In particular the lateral extension of the detection volume, beyond the pixel region, is investigated and the results show high hit efficiency also at the detector edge, even in presence of guard rings.
Source: Journal of Instrumentation
Authors: M. Bomben, A. Ducourthial, A. Bagolini, M. Boscardin, L. Bosisio, G. Calderini, L. D'Eramo, G. Giacomini, G. Marchiori, N. Zorzi, A. Rummler, J. Weingarten
Institutions: Laboratoire de Physique Nucléaire et de Hautes Énergies, Fondazione Bruno Kessler, FBK Center for Materials and Microsystems, University of Trieste, Istituto Nazionale di Fisica Nucleare, Brookhaven National Laboratory, Centre National de la Recherche Scientifique, Laboratoire d’Annecy de Physique des Particules, Institut National de Physique Nucléaire et de Physique des Particules, Université Savoie Mont Blanc, University of Göttingen
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2587130278