Registration Number
0216U002442,
0115U002756
, R & D reports
Title
Data processing from the Large Hadron Collider in the NSC KIPT T2-center of grid-infrastructure of experiment of CMS (CERN) - 2015
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Head
Levchuk Leonid Guennadievich, Кандидат фізико-математичних наук
Registration Date
11-03-2016
Organization
National Science Center "Kharkiv Institute of Physics and Technology
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In experiment of CMS on the Large Hadron Collider (LHC) data processing which were received in the first session the LHC is almost finished. Stable and reliable work of computing grid-infrastructure of experiment became one of powerful components of new outstanding achievements among which it should be noted detection of disintegrations of H®gg Higgs boson with value 5.7s, record on the accuracy of determination of mass of a t-quark, and also detection associative (with a W-boson) the birth of single t-quarks. The specialized computer system (CS) of NSC KIPT (T2_UA_KIPT T2 center) is the active element of grid-infrastructure of CMS working on its to the 2nd "circle". In 2015 large volume of works on preparation of information infrastructure of CMS to a new session which will begin working at the beginning of 2015 and in which a collider awaking with the design parameters - as energy of collision of protons ~ 13-14 TEV and luminosity ~ 1034 cm-2s-1 was executed. General check before start of a collider of operability of all infrastructure of CMS for data processing - "Computing/Software/Analysis (CSA) Challenge - 2014" which is carried out in July-September, 2015 was the major event in experiment of CMS within preparation for the 2nd session the LHC. Preparation to and ensuring direct participation in this T2 center of T2_UA_KIPT was one of the main tasks of this project for 2015. This participation defines prospects of further data processing of experiment of CMS on the T2_UA_KIPT complex in the period of the 2nd session the LHC. Despite of the difficulties caused by a shortcoming (by 1.5-2 times, in comparison with requirements of CMS) computing and disk resources, and also insufficient width of a communication channel, it was succeeded to provide high reliability and stability of work of T2 center of T2_UA_KIPT that allowed a complex to take full-scale participation in CSA Challenge-2014. As a result of this participation to a complex it was transferred ~ 100 Terabyte of data of CMS (generally the events generated by the Monte-Carlo method) which it is comparable with year transfer on a complex of data from a collider in the period of the first session the LHC. Intensity of use of its computing resources since the beginning of 2015 made more than 30 thousand kHEPspec-hours that is one and a half times more, than for previous year. As a result the management of CMS suggested to reckon support of the T2_UA_KIPT complex in 2014 at the level of 9.5 FTE months service the robot on service of experiment of CMS, which much more, than in previous years that is very high rate. Also large volume of works on the physical analysis of the data which are already obtained in experiment by CMS was executed. Search of SUSY particles is continued, the inclusive births of j-mezonov in a proton - proton impacts, and also processes Drella-Yana in kinematic area which answers the Z-boson birth, with working off of algorithms of a dekonvolyution of ranges of mass of muonic couples are studied. For these researches ~900 CPU hours of the computing WLCG resources were used
Product Description
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Бунецький Олег Олегович
Горбенко Євген Степанович
Кліменко Кім Олександрович
Левчук Леонід Геннадійович
Лук'яненко Сергій Тимофійович
Попов Віктор Пилипович
Приставка Олександр Сергійович
Сорокін Павло Володимирович
Тижненко Микола Олександрович
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2020-04-02
