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Few applications of organizational behavior management (OBM) in the banking industry have been reported, despite evidence showing that work performance in many areas of a financial institution, and even bank profitability, can be improved with these metho

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1. Introduction This note reports the results of the alignment of the ATLAS Inner Detector [1] silicon tracker (Pixel and SCT) modules at the ATLAS Combined Test Beam data-taking (CTB) which took place at the CERN H8 beam-test facility in 2004. The purpose of the CTB was to study the combined performance of ATLAS. The setup represented a full barrel slice of the Inner Detector (ID), Calorimeter and Muon Spectrometer of the complete ATLAS detector and was instrumented with final prototypes. Once the Pixel and SCT modules had been installed in the CTB setup in addition to the already operational TRT, the Inner Detector was fully integrated into the common data acquisition system. Data were collected with this fully integrated ID, using beams with different characteristics. Pion, electron, muon and photon beams were used in a wide range of momenta from 2 to 180 GeV/c, and some data were taken without magnetic field (B). The CTB setup represented an ideal framework for testing the Inner Detector software. The offline reconstruction was tested on real data using the ATLAS software framework (ATHENA) [2] and was particularly useful for tracking [3], pre-commissioning tests, and for testing the alignment software. Determining the locations of the tracking detector elements is crucial for the performance of the ID tracker. For this purpose, various alignment algorithms, based on optimization of track hit residuals, were applied to align the CTB silicon setup. An alignment algorithm specifically developed for the CTB (hereafter referred to as Valencia approach [4]) had been adapted from an – 1 – algorithm used in previous SCT standalone test beams [5], by the time the first data were collected. The Valencia approach produced alignment corrections for the initial CTB data analysis. For the final analysis of the alignment, three more algorithms were tested. These algorithms, developed for the alignment of the entire Inner Detector silicon tracker, are: Robust [6], Local χ 2 [7, 8] and Global χ 2 [9, 10] approaches [11]. The resulting sets of alignment constants were used to measure the momenta of the incident particles in electron and pion runs. A comparison with the nominal momenta was used to crosscheck the different alignment procedures. The residual distributions and reconstructed track parameters were studied for electrons and pions with and without B field. The global reference frame was also studied by matching the alignment results via a global offset optimization. 2. Setup, Data Samples and Tracking The Inner Detector volume in the CTB setup was divided into three containers for each subdetector: Pixel, SCT and TRT. Six Pixel and eight SCT modules were placed in their respective containers1 . The TRT setup consisted of two barrel wedges, equivalent to 1/16 of the circumference of a cylinder. The coordinate system was chosen to be right-handed, with the X-axis along the beam direction and the Y-axis pointing vertically upward as depicted in Fig. 1 [12]. The origin was located at the entrance of the dipole magnet that produced a maximum 1.4 T field in the negative Z-direction. The Pixel and SCT detectors were located inside the magnet whereas the TRT detector was locate

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Lawrence Berkeley National Laboratory
Lawrence Berkeley National Laboratory

Title
Alignment of the Pixel and SCT Modules for the 2004 ATLAS Combined Test Beam

Permalink
https://escholarship.org/uc/item/8r41d0n3

Authors
Ahmad, A.
ATLAS Collaboration

Publication Date
2009-01-13




eScholarship.org Powered by the California Digital Library
University of California

, Preprint typeset in JINST style - HYPER VERSION
arXiv:0805.3984v1 [physics.ins-det] 26 May 2008




Alignment of the Pixel and SCT Modules for the
2004 ATLAS Combined Test Beam




A. Ahmad35,a , A. Andreazza21 , T. Atkinson20 , J. Baines31, A.J. Barr28 , R. Beccherle11,
P.J. Bell17 , J. Bernabeu38, Z. Broklova30 , P. A. Bruckman de Renstrom28,b , D. Cauz37 ,
L. Chevalier32, S. Chouridou33, M. Citterio21 , A. Clark10 , M. Cobal37 , T. Cornelissen6,
S. Correard19 , M.J. Costa38 , D. Costanzo34 , S. Cuneo11, M. Dameri11 , G. Darbo11 ,
J.B. de Vivie19 , B. Di Girolamo6 , D. Dobos9 , Z. Drasal30 , J. Drohan, K. Einsweiler2,
M. Elsing6 , D. Emelyanov31, C. Escobar38 , K. Facius7 , P. Ferrari6 , D. Fergusson2,
D. Ferrere10 , T. Flick39 , D. Froidevaux6, G. Gagliardi11 , M. Gallas6 , B.J. Gallop31 ,
K.K. Gan27 , C. Garcia38 , I.L. Gavrilenko22, C. Gemme11 , P. Gerlach39 , T. Golling2 ,
S. Gonzalez-Sevilla38 , M.J. Goodrick5, G. Gorfine26 , T. Göttfert24 , J. Grosse-Knetter3,
P.H. Hansen7, K. Hara36 , R. Härtel24 , A. Harvey13 , R.J. Hawkings6,
F.E.W. Heinemann28, T. Henns39 , J.C. Hill5 , F. Huegging3, E. Jansen25, J. Joseph2,
M. Karagöz Ünel28∗, M. Kataoka6, S. Kersten39, A. Khomich18, R. Klingenberg9,
P. Kodys30, T. Koffas6 , N. Konstantinidis16, V. Kostyukhin11, C. Lacasta38, T. Lari21 ,
S. Latorre21 , C.G. Lester5 , W. Liebig26 , A. Lipniacka1, K.F. Lourerio27 ,
M. Mangin-Brinet10, S. Marti i Garcia38†, M. Mathes3, C. Meroni21 , B. Mikulec10 ,
B. Mindur8 , S. Moed10 , G. Moorhead20, P. Morettini11 , E.W.J. Moyse6 , K. Nakamura38 ,
P. Nechaeva11, K. Nikolaev15, F. Parodi11 , S. Parzhitski, J. Pater17 , R. Petti4 ,
P.W. Phillips31 , B. Pinto29 , A. Poppleton6, K. Reeves39, I. Reisinger9, P. Reznicek30 ,
P. Risso11 , D. Robinson5, S. Roe6 , A. Rozanov19 , A. Salzburger14 , H. Sandaker1,
L. Santi37 , C. Schiavi11 , J. Schieck24, J. Schultes39, A. Sfyrla10 , C. Shaw12 ,
F. Tegenfeldt6, C.J.W.P. Timmermans25, B. Toczek8, C. Troncon21, M. Tyndel31 ,
F. Vernocchi11 , J. Virzi2 , T. Vu Anh10 , M. Warren16 , J. Weber9 , M. Weber31 ,
A.R. Weidberg28, J. Weingarten3, P. S. Wells6 , A. Zhelezko23




–1–

, 1 University of Bergen, Department for Physics and Technology, Allegaten 55, NO - 5007 Bergen,
Norway
2 Lawrence Berkeley National Laboratory and University of California, Physics Division,

MS50B-6227, 1 Cyclotron Road, Berkeley, CA 94720, United States of America
3 Physikalisches Institut der Universitaet Bonn, Nussallee 12, D - 53115 Bonn, Germany
4 Brookhaven National Laboratory, Physics Department, Bldg. 510A, Upton, NY 11973, United

States of America
5 Cavendish Laboratory, University of Cambridge, J J Thomson Avenue, Cambridge CB3 0HE,

United Kingdom
6 CERN, CH - 1211 Geneva 23, Switzerland
7 Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, DK - 2100 Kobenhavn 0,

Denmark
8 Faculty of Physics and Applied Computer Science of the AGH-University of Science and

Technology, (FPACS, AGH-UST), al. Mickiewicza 30, PL-30059 Cracow, Poland
9 Universitaet Dortmund, Experimentelle Physik IV, DE - 44221 Dortmund, Germany
10 Universite de Geneve, Section de Physique, 24 rue Ernest Ansermet, CH - 1211 Geneve 4,

Switzerland
11 INFN Genova and Università di Genova, Dipartimento di Fisica, via Dodecaneso 33, IT -

16146 Genova, Italy
12 University of Glasgow, Department of Physics and Astronomy, UK - Glasgow G12 8QQ, United

Kingdom
13 Hampton University, Department of Physics, Hampton, VA 23668, United States of America
14 Institut fuer Astro- und Teilchenphysik, Technikerstrasse 25, A - 6020 Innsbruck, Austria
15 Joint Institute for Nuclear Research, JINR Dubna, RU - 141 980 Moscow Region, Russia
16 University College London, Department of Physics and Astronomy, Gower Street, London

WC1E 6BT, United Kingdom
17 School of Physics and Astronomy, University of Manchester, UK - Manchester M13 9PL, United

Kingdom
18 Universitaet Mannheim, Lehrstuhl fuer Informatik V, B6, 23-29, DE - 68131 Mannheim,

Germany
19
CPPM, Aix-Marseille Universit, CNRS/IN2P3, Marseille, France
20 School of Physics, University of Melbourne, AU - Parkvill, Victoria 3010, Australia
21 INFN Milano and Università di Milano, Dipartimento di Fisica, via Celoria 16, IT - 20133

Milano, Italy
22 P.N. Lebedev Institute of Physics, Academy of Sciences, Leninsky pr. 53, RU - 117 924 Moscow,

Russia
23 Moscow Engineering & Physics Institute (MEPhI), Kashirskoe Shosse 31, RU - 115409

Moscow, Russia
24 Max-Planck-Institut für Physik, (Werner-Heisenberg-Institut), Föhringer Ring 6, 80805

München, Germany
25 Radboud University Nijmegen/NIKHEF, Dept. of Exp. High Energy Physics, Toernooiveld 1, NL

- 6525 ED Nijmegen , Netherlands
26
Nikhef National Institute for Subatomic Physics, Kruislaan 409, P.O. Box 41882, NL - 1009 DB
Amsterdam, Netherlands
27 Ohio State University, 191 West Woodruff Ave, Columbus, OH 43210-1117, United States of

America
28 Department of Physics, Oxford University, Denys Wilkinson Building, Keble Road, Oxford OX1

3RH, United Kingdom
29 Laboratorio de Instrumentacao e Fisica Experimental de Particulas - LIP, and SIM/Univ. de

Lisboa, Avenida Elias Garcia 14-1, PT - 1000-149, Lisboa, Portugal



–2–

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