ATLAS დეტექტორის ერთიანი გეომეტრიული მოდელის ანალიზის და სინთეზის მეთოდების დამუშავება

Geometry modeling is holds one of the most important place in engineering projects. Geometry modeling is the starting point of solving different tasks associated with engineering projects. Complete engineering geometry model is necessary to solve engineering tasks in big engineering projects. Complete engineering geometry model is one complete assembly which contains every geometry model included in project. Nuclear physic projects nowadays needs complex engineering constructions to run experiments. ATLAS detector is one of these engineering constructions which contains 3’705 main assemblies and more than 10’000’000 functional elements. Changes made in EDM/CAD systems at CERN had a negative effect on ATLAS project, because it had serious migration problems. Therefore, it became necessary to create a complete engineering geometry model that would solve problems caused by migration. As a result, aim of a research is to develop the structural formalism in order to build the complete engineering geometry model of the detector, which in turn implies the classification of components, decomposition and the allocation of typical structures. Object of research is complete engineering geometry model of ATLAS detector. Research includes development of structural decomposition method of ATLAS detector, classification method for components and method for separating of structural units. Also developed methods for evaluating engineering geometry models, compare analysis for geometries and component synthesis in complete engineering geometry model. ATLAS detectors structural formalism has never been researched at CERN. Therefore we didn’t have the schematic picture of detector as one complete structure. Scientific achievement of dissertation is as follow: 1. Approach for structural decomposition of ATLAS detector has been developed by implementation of criteria of - Functionality, Positioning and Symmetry 2. Engineering geometry model of ATLAS detector was described by the 8 level hierarchical tree with 207 classes and 247 objects 3. Methods for evaluation and selection of 3D engineering geometry models have been developed Practical Implementation 1. Structural tree of ATLAS detector 3D geometry model has been developed 2. Reference geometry of ATLAS detector was created in CATIA V5 and used in simulation and reconstruction applications