Validation Studies of the ATLAS Pixel Detector Control System

Article
Report number	physics/0510272
Title	Validation Studies of the ATLAS Pixel Detector Control System
Related title	A TOROIDAL LHC APPARATUS LARGE HADRON COLLIDER
Author(s)	Schultes, Joachim (Wuppertal U.) ; Becks, Karl-Heinz (Wuppertal U.) ; Flick, Tobias (Wuppertal U.) ; Henss, Tobias (Wuppertal U.) ; Imhauser, Martin (Wuppertal U.) ; Kersten, Susanne (Wuppertal U.) ; Kind, Peter (Wuppertal U.) ; Lantzsch, Kerstin (Wuppertal U.) ; Mattig, Peter (Wuppertal U.) ; Reeves, Kendall (Wuppertal U.) ; Weingarten, Jens (Bonn U.)
Publication	2006
Imprint	31 Oct 2005
Number of pages	8
Note	8 pages, 8 figures, proceedings for the Pixel2005 workshop
In:	Nucl. Instrum. Methods Phys. Res., A 565 (2006) 90
In:	International Workshop on Semiconductor Pixel Detectors for Particles and Imaging, Bonn, Germany, 5 - 8 Sep 2005, pp.90
DOI	10.1016/j.nima.2006.04.097
Subject category	Other Fields of Physics
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	The ATLAS pixel detector consists of 1744 identical silicon pixel modules arranged in three barrel layers providing coverage for the central region, and three disk layers on either side of the primary interaction point providing coverage of the forward regions. Once deployed into the experiment, the detector will employ optical data transfer, with the requisite powering being provided by a complex system of commercial and custom-made power supplies. However, during normal performance and production tests in the laboratory, only single modules are operated and electrical readout is used. In addition, standard laboratory power supplies are used. In contrast to these normal tests, the data discussed here was obtained from a multi-module assembly which was powered and read out using production items: the optical data path, the final design power supply system using close to final services, and the Detector Control System (DCS). To demonstrate the functionality of the pixel detector system a stepwise transition was made from the normal laboratory readout and power supply systems to the ones foreseen for the experiment, with validation of the data obtained at each transition.