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Partonic showers and jets
Hladík, Ondřej ; Kupčo, Alexander (advisor) ; Spousta, Martin (referee)
Title: Partonic showers and jets Author: Ondřej Hladík Department: Institute of Theoretical Physics MFF UK Supervisor: Mgr. Alexander Kupčo, Ph.D., Institute of Physics ASCR, v. v. i. Abstract: In the present thesis we compare experimentally measured differential and integrated jets shapes with predictions of quantum chromodynamics (QCD) at the second order (NLO) of perturbative expansion. The measured jet sha- pes were taken from ATLAS experiment at LHC in proton-proton collisions at a center-of-mass energy √ s = 7 TeV and were compared with these predictions. The jets were reconstructed by means of anti-kT jet algorithm with R = 0.6. The predictions at NLO QCD agree with data in wider kinematics region than predictions at leading order (LO). The agreement, however, is still in some kine- matical regions not satisfactory. Keywords: QCD, jets, jet shapes, LHC
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Study of pp and PbPb collisions at LHc
Balek, Petr ; Dolejší, Jiří (advisor) ; Spousta, Martin (referee)
In the present work we study the identification of the particle using deposited charge per unit length in the Pixel detector (part of the ATLAS detector) wich can offer an almost analogous read-out of the deposited charge. First, we parametrically describe the dependences of the deposited charge to reduce the volume of the data used in further analysis. Then we use these parameters as an input for particle identification. We elaborate the method of the identification that allows us to say in most of the cases whether the particle passing through the detector was pion, kaon, or proton. This method can be reproduced using Athena tool that has been written.
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Study of the calorimeter for ATLAS experiment at CERN
Chalupková, Ina ; Davídek, Tomáš (advisor) ; Spousta, Martin (referee)
Nazev prace: Zkoumani vlastnosti kaJorimetru pro experiment ATLAS v GERNAutor: Ina Chalnpkova Katedra (ustav); Ustav casticove ajaderne fyziky Vedouci bakalafske prace: RNDr. Tomas Davidek, Ph.D. e-mail vcdoucilio: Tomas.Davidek@mff.cuni.cz Abstrakt: V praci je strncne popsan detektor ATLAS v CER.Nu a jeden z jehosubdetektoru-kalorimetr TileCal. Po uvedem do problematiky kaJoriinetrie je vysvetlen rozvoj sprsek a problem nokompenzovatelno.sti hadronoveho kalorimetru, ktcry souvi.si s podi'lom eloktro- magneticke a hadronovc komponenty rozvoje. Je definovana linearita a energeticke rozsi'renf jako dva z jeho zakladm'ch paramctru. V poslcdrii caati jsou (yto paramctry pomoci progxamu ROOT vyhodnoccne ze simuJaci ijiterakce nabitych pionu s kalorimentrem a porovnane s dosavadnimiexperimentalm'mi zavery. Klicova slova: ATLAS, kalorimetr, TileCal, energeticke rozlisenf, nekompenzova-telnost Title: Study of the calorimeter for ATLAS experiment at CERN Author: Ina Chalupkova Department: Institute of Particle and Nuclear Physics Supervisor: RNDr. Tomas Davzdek, Ph.D. Supervisor's e-mail addresy; Tomas.Davidek@mff.cuni.cz Abstract: This thesis in its first part briefly explains the CRR.N ATLAS detector and one of its sub-detectors - calorimeter TileCal. After introducing to the calorimetry problematics, are the...
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Jets in Heavy Ion Collisions at the ATLAS Detector
Spousta, Martin ; Dolejší, Jiří (advisor) ; Chýla, Jiří (referee) ; Bielčíková, Jana (referee)
After some introduction to the quantum chromodynamics and physics of the heavy ions collisions, and after a brief review of the ATLAS detector, the attention is focused to the main aim of the work. The main aim of the work is to develop and test algorithms suitable for the jet reconstruction in heavy ion collisions at the ATLAS detector. After the detailed description of these algorithms and their implementation to the official software of the ATLAS detector, the author analyzes their performance and provides expectation of accuracy of jet measurements in the heavy ion collisions. The rest of the work focuses on a possibility to study the influence of jets by the medium created in heavy ion collisions.
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The making of 3D electronics catalogs
Spousta, Martin ; Dvořák,, Jiří (referee) ; Dvořák, Jiří (advisor)
This Bachelor thesis deals with problems of making 3D electronics catalogues for their widely usage. It contains the description of current level of electronics catalogues, theoretical solution of the problem with description of advantages, disadvantages and warrant of new solution. It contains the practical solution as well.
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E-shop in 3D Dimension
Spousta, Martin ; Dvořák,, Jiří (referee) ; Dvořák, Jiří (advisor)
This Diploma thesis deals with problems of making 3D e-shops for their widely usage. It contains the description of current level of e-shop, theoretical solution of the problem of transition to 3D with a description of advantages, disadvantages and warrant of new solution. It contains the practical solution as well.
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Evaluation of the Financial Situation in the Firm and Proposals to its Improvement
Spousta, Martin ; Ohniště, Martin (referee) ; Bartoš, Vojtěch (advisor)
This Thesis in first chapters would like to introduce its Reader watched firm. Next it can be found there explanations of Financial analysis Issue by common Aspect and this Principles and Legitimacys are used in Financial analysis of ZEPIKO, spol. s r.o. Acquired readings are valorizated and compare with requested readings and next this Endings are evaluated and formulated. In the end of this Thesis can be found some suggestions for improvements of its present condition and Also it is there possible suggestions for enhancements of Positions this Firm for the Future.
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