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arxiv: 1204.1266 · v3 · pith:EV5PKTL6new · submitted 2012-04-05 · ⚛️ physics.ins-det · hep-ex

Planar Pixel Sensors for the ATLAS Upgrade: Beam Tests results

J. Weingarten (1) , S. Altenheiner (2) , M. Beimforde (3) , M. Benoit (4) , M. Bomben (5) , G. Calderini (5 , 6) , C. Gallrapp (4)
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M. George (1) S. Gibson (4) S. Grinstein (7) Z. Janoska (8) J. Jentzsch (4) O. Jinnouchi (9) T. Kishida (9) A. La Rosa (10) V. Libov (11) A. Macchiolo (3) G. Marchiori (5) D. M\"unstermann (4) R. Nagai (9) G. Piacquadio (4) B. Ristic (2) I. Rubinskiy (11) A. Rummler (2) Y. Takubo (12) G. Troska (2) S. Tsiskaridtze (7) I. Tsurin (13) Y. Unno (12) P. Weigell (3) T. Wittig (2) ((1) II. Physikalisches Institut Georg-August-Universit\"at G\"ottingen Germany (2) Technische Universit\"at Dortmund Fakult\"at Physik Dortmund (3) Max-Planck-Institut f\"ur Physik M\"unchen (4) CERN Gen\`eve Switzerland (5) Laboratoire de Physique Nucleaire et de Hautes \'Energies (LPNHE) Paris France (6) Dipartimento di Fisica E. Fermi Universit\`a di Pisa INFN Sez. di Pisa Pisa Italy (7) Institut de F\'isica d'Altes Energies (IFAE) Bellaterra Spain (8) Division of elementary particle physics - Institute of Physics of the Academy of Sciences of the Czech Republic Prague Czech Republic (9) Tokyo Institute Of Technology Tokyo Japan (10) Section de Physique (DPNC) Universit\'e de Gen\`eve (11) Deutsches Elektronen-Synchrotron (DESY) Hamburg (12) High Energy Accelerator Research Organization Tsukuba (13) The University of Liverpool Liverpool United Kingdom)
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classification ⚛️ physics.ins-det hep-ex
keywords sensorspixelatlaschargeplanartestedbeamdifferent
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Results of beam tests with planar silicon pixel sensors aimed towards the ATLAS Insertable B-Layer and High Luminosity LHC (HL-LHC) upgrades are presented. Measurements include spatial resolution, charge collection performance and charge sharing between neighbouring cells as a function of track incidence angle for different bulk materials. Measurements of n-in-n pixel sensors are presented as a function of fluence for different irradiations. Furthermore p-type silicon sensors from several vendors with slightly differing layouts were tested. All tested sensors were connected by bump-bonding to the ATLAS Pixel read-out chip. We show that both n-type and p-type tested planar sensors are able to collect significant charge even after integrated fluences expected at HL-LHC.

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