Fyzikální ústav Akademie věd ČR

We collaborate in the D0 experiment. The D0 detector is located at the TEVATRON accelerator with colliding beams of antiprotons and protons at Fermilab (Fermi National Accelerator Laboratory) in Batavia, Illinois, U.S.A. The accelerator energy is 1 + 1 TeV and designed luminosity 3x10³² cm^-2s^-1. The D0 experiment studies collisions of antiprotons and protons at the highest energy achieved at accelerator (surpassed only on 30 November 2009 by LHC at CERN). The top quark was discovered by the TEVATRON experiments CDF and D0 in so called Run1 at 1995. After that, extensive reconstruction of the accelerator and CDF and D0 experiments took place. Experiment D0 was equipped with new vertex detector for precise measurement of tracks close to the interaction point, new tracking detector – fiber tracker, superconducting magnet to determine particle charges, new forward detector for measurement of small angle scattering and new electronics capable to record higher data flux.

The new complex started operation – Run2 - on 1 March 2001. By the end of 2009 we reached 7 fb^-1 of data and we plan to get 10^-12 fb^-1 by 2012. This will allow the detailed study of the top quark and many other precision measurements and discoveries.

Collaborating teams from the Czech Republic (Institute of Physics AS CR, Faculty of Mathematics and Physics of the Charles University and Faculty of Nuclear Sciences and Physical Engineering of the Czech Technical University) are active notably in the study of jet production, precise top quark measurement and diffractive processes and in service tasks like serving shifts during data taking, data preparation, software upgrades, precise jet scale measurement or detector simulation.

Main contribution of the Department is in data processing. Electronics experiments like D0 need high amount of computer simulated data of detector functioning for their physics analysis. The Regional Computing Centre for Particle Physics located in the Institute of Physics delivers half of its capacity for D0 simulations. We deliver the 3rd highest amount of D0 simulated data coming from the external laboratories (90 collaborating laboratories, more than half from Europe, 510 physicists from 18 nations).

The web pages of the Czech collaborating team are located here.