Abstract
Tilecal is the barrel hadronic calorimeter of the ATLAS detector that is presently being built at CERN to operate at the LHC accelerator. The main task of the Tilecal detector control system (DCS) is to enable the coherent and safe operation of the detector. All actions initiated by the operator and all errors, warnings, and alarms concerning the hardware of the detector are handled by DCS. The DCS has to continuously monitor all operational parameters, give warnings and alarms concerning the hardware of the detector. The DCS architecture consists of a distributed back-end (BE) system running on PC's and different front-end (FE) systems. The implementation of the BE will he achieved with a commercial supervisory control and data acquisition system (SCADA) and the FE instrumentation will consist on a wide variety of equipment. The connection between the FE and BE is provided by fieldbus or LAN and a SCADA real-time (RT) database will contain records of all equipment and where the corresponding data values are stored. The Tilecal DCS design is being finalized. Prototypes of the main systems were already tested and are being upgraded to be used in the 2004 ATLAS subdetectors combined test beam at CERN. The low voltage control system is based on the ELMB board developed by ATLAS for the several subdetectors and the high voltage system is based on the HV-micro boards developed by Tilecal. Status and results are presented.
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