Author/Authors :
Avramidou، نويسنده , , Berbiers، نويسنده , , J and Boudineau، نويسنده , , C and Dechelette، نويسنده , , C and Drakoulakos، نويسنده , , D and Fabjan، نويسنده , , C and Grau، نويسنده , , S and Gschwendtner، نويسنده , , E and Maugain، نويسنده , , J.-M and Rieder، نويسنده , , H and Rangod، نويسنده , , S and Rohrbach، نويسنده , , F and Sbrissa، نويسنده , , E and Sedykh، نويسنده , , E and Sedykh، نويسنده , , I and Smirnov، نويسنده , , Y and Vertogradov، نويسنده , , L and Vichou، نويسنده , , I، نويسنده ,
Abstract :
A gigantic detector, the ATLAS project, is under construction at CERN for particle physics research at the Large Hadron Collider which is to be ready by 2006. An X-ray tomograph has been developed, designed and constructed at CERN in order to control the mechanical quality of the ATLAS muon chambers. We reached a measurement accuracy of 2 μm systematic and 2 μm statistical uncertainties in the horizontal and vertical directions in the working area 220 cm (horizontal)×60 cm (vertical). Here we describe in detail the fundamental approach of the basic principle chosen to achieve such good accuracy. In order to crosscheck our precision, key results of measurements are presented.
Keywords :
LHC accelerator , ATLAS experiment , Muon chamber detector , quality control , X-ray instrumentation , Computerized tomography
