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Evaluation of novel KEK/HPK n-in-p pixel sensors for ATLAS upgrade with testbeam
Nagai R., Idárraga J., Gallrapp C., Unno Y., Lounis A. et al
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 699 (2013) 78-83 - http://hal.in2p3.fr/in2p3-00696031
Physique/Physique/Instrumentations et Détecteurs
Evaluation of novel KEK/HPK n-in-p pixel sensors for ATLAS upgrade with testbeam
R. Nagai, J. Idárraga1, C. Gallrapp, Y. Unno, A. Lounis1, O. Jinnouchi, Y. Takubo, K. Hanagaki, K. Hara, Y. Ikegami, N. Kimura, K. Nagai, I. Nakano, R. Takashima, S. Terada, J. Tojo, K. Yorita, S. Altenheiner, M. Backhaus, M. Bomben2, D. Forshaw, M. George, J. Janssen, J. Jentzsch, T. Lapsien, A. La Rosa, A. Macchiolo, G. Marchiori2, C. Nellist, L. Rubinsky, A. Rummler, G. Troska, P. Weigell, J. Weingarten
1 :  LAL - Laboratoire de l'Accélérateur Linéaire
http://www.lal.in2p3.fr/
CNRS : UMR8607 – IN2P3 – Université Paris XI - Paris Sud
Centre Scientifique d'Orsay B.P. 34 91898 ORSAY Cedex
France
2 :  LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
http://www-lpnhep.in2p3.fr
CNRS : UMR7585 – IN2P3 – Université Pierre et Marie Curie (UPMC) - Paris VI – Université Paris VII - Paris Diderot
Barre 12-22, 1er étage 4 Place Jussieu 75252 Paris Cedex 05
France
A new type of n-in-p planar pixel sensors have been developed at KEK/HPK in order to cope with the maximum particle fluence of 1-3×1016 1 MeV equivalent neutrons per square centimeter (neq/cm2) in the upcoming LHC upgrades. Four n-in-p devices were connected by bump-bonding to the new ATLAS Pixel front-end chip (FE-I4A) and characterized before and after the irradiation to 2×1015neq/cm2. These planar sensors are View the MathML source thick, using biasing structures made out of polysilicon or punch-through dot and isolation structures of common or individual p-stop. Results of measurements with radioactive 90Sr source and with a 120 GeV/c momentum pion beam at the CERN Super Proton Synchrotron (SPS) are presented. The common p-stop isolation structure shows a better performance than the individual p-stop design, after the irradiation. The flat distribution of the collected charge in the depth direction after the irradiation implies that the effect of charge trapping is small, at the fluence, with the bias voltage well above the full depletion voltage.
ATLAS

Articles dans des revues avec comité de lecture
2013
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (Nucl. Instr.& Meth. Phys. A)
Publisher Elsevier
ISSN 0168-9002 
699
78-83

LAL 12-154
Pixel detector – n-in-p – ATLAS – HL-LHC