Contributions to particle physics experiments

(A)    HYPERON at Serpukhov accelerator, Russia

   – design, construction and running of the Cherenkov detectors and lead-glass electro-magnetic calorimeter;

   – development of methods and software for data analysis and detector    simulation;

   – physical interpretation of the experimental data;

   – development of the physical program and detector design.

(B)       CMS at LHC, CERN:

– Hadron Calorimeter

   • development of simulation tools, design and optimization of the construction;

   • production of prototypes and tests at SPS accelerator;

   • development and tests of photodetectors being able to work in strong magnetic fields;

   • production in Bulgaria of major part of the barrel HCAL absorber;

   • assembly and calibration of the detector at SPS;

   • development of methods for reconstruction of the energy deposited in the calorimeter.

– Muon detector: Barrel Resistive-Plate Chambers (RPCs)

   • design and construction of Barrel RPCs;

   • production of all necessary materials for assembly of the mechanical frames of the       RB2, RB3 and RB4 Barrel chambers (375 chambers);

   • pre-assembly of the mechanical frames for RB2, RB3 and RB4 chambers;

   • establishment of assembly- and test- site in Sofia;;

   • establishment of test site at CERN;

   • final test at CERN and integration in the CMS detector of the Barrel RPCs.

–  Muon detector: Endcap RPCs

   • establishment of assembly- and test- site at CERN (trigger system for cosmic muons  and DAQ for the test center).

– Software and Computing

   • development of methods and software for simulation and data analysis;

   • establishing at the University of Sofia of the necessary computing environment for effective participation of Bulgarian physicists in the LHC physical programm (fast connection, possible building of Tier2 center etc.);

   • participation in the GRID projects (LCG, EGEE, SEE-Grid).

(C)    NA48 at SPS, CERN

   – experimental-data analysis and MC simulation of the NA48 detector;

   – development of methods for particle identification using neural networks;

      – running of the NA48/2 experiment;

   – preparation of proposal for new experiment;

   - development of Shashlik type electromagnetic calorimeter (SAC) for NA62 experiment

      -  

(D)    NA49 at SPS, CERN

   – running of the experiment;

   – data analysis;

   – comparison of the experimental results with theoretical predictions.