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Information × Registration Number 0221U105940, 0121U112532 , R & D reports Title Solid-state fixed target mode at the LHCb experiment (CERN) and search for extreme states of matter in heavy-ion collisions at the Large Hadron Collider popup.stage_title Head Jenkovszky Laszlo L., Доктор фізико-математичних наук Registration Date 13-09-2021 Organization М.М.Bogolyubov Institute of Theoretical Physics of the National Academy of Sciences of Ukraine popup.description2 A model of the central production of new mesons in the processes of diffractive dissociation of protons at the LHC accelerator (CERN) at an energy of 13 TeV was built; Masses and widths of decay of glueballs (hypothetical particles formed from gluons and do not carry a "flavor") were calculated; The differential cross sections of neutral K-mesons and lambda-baryons production were calculated as a function of the rapidity y and the transverse momentum pT in p-Pb collisions at an energy of 8.16 TeV (in c.m.s. of nucleon pairs) in LHCb; the dependence of the measured cross sections on the multiplicity and the efficiency of particle reconstruction has been determined; the developed software for data selection in parallel in many streams, on many computers, can significantly reduce the time of data processing; The concept and design of a prototype of a target assembly with several independent micro-targets with a hybrid linear mechanical drive system based on a miniature stepper motor and a MEMS motor for each was developed; for the first time the use of MEMS (microelectronic-mechanical system) technology was substantiated to control the position of microstrip targets with a thickness and width of 1 μm and a length of up to 1 cm, based on the original technology of metal microstrip detectors (MMD), created at the INR NAS of Ukraine; the setup of a compact target device with several targets as an integral element of the LHC’s beam pipe is presented. within the framework of the ongoing modernization of the LHCb experiment (Upgrade I), the RMS-R3 system, designed and constructed in the INR NAS of Ukraine on the original technology of metal-foil detectors; installed at the nominal working position, the RMS-R3 detector system will ensure monitoring of instantaneous luminosity stability as well as background at LHCb; data from the system are being included in a central data acquisition and and monitoring system for displaying them on the control panel for the LHCb experiment. Product Description popup.authors Aushev Volodymyr Ye Gogota Olha P Dobishuk Vasyl M Koliiev Serhii M Kot Olexander A Ksyvanskii Olexander O Puhach Valerii M Skirenok Olexander O Chernyshenko Serhii B popup.nrat_date 2021-09-13 Close