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Support of HEP

The particle physics community in the Czech Republic is actively involved in the TEVATRON,

RHIC and LHC accelerator experiments, as well as in astrophysics experiments. For this

community CESNET provides the access to network resources in the following two ways:

1.

High-speed access to IP services (both IPv4 and IPv6), and

2.

Dedicated international high performance lines (so called end-to-end or lambda services).

Support of research grids at large (but primarily for HEP) is a subject of the EGEE II (Enabling

Grids for e-Science) international project, which CESNET is actively involved in.

The most important HEP groups in the Czech Republic are:

1.

Institute of Physics, ASCR, Prague,

2.

Nuclear Physics Institute, ASCR, Řež,

3.

Faculty of Mathematics and Physics, Charles University, Prague,

4.

Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University,

Prague,

5.

Institute of Experimental and Applied Physics, Czech Technical University, Prague.

In addition to standard IP connectivity, these institutes are connected to the CESNET2 node

located in CESNET's premises in Prague using 1 or 10 GE lambdas.

The Institute of Physics hosts the Regional Computing Centre for Particle Physics that serves

together with CESNET's grid computing center as a distributed Tier2 centre of the LHC

Computing Grid (LCG) project. Its main computing resources are devoted to the D0 experiment

at the Tevatron Run2, the STAR experiment at RHIC, astrophysics AUGER experiment as well

as the ATLAS and ALICE LHC experiments. For this Tier2 centre CESNET established

following lambdas:

1.

Within the Géant2+ service and with the co-operation with German NREN DFN, a circuit

at the capacity of 1 Gbps to the Tier2 Centre in Karlsruhe

2.

A link from Prague to Fermilab. This link is intensively used for the D0 experiment data

processing at the Prague Regional Centre.

3.

A link from Prague to BNL. The link is prepared for use by the STAR experiment and

later for connection to the BNL's ATLAS Tier1 centre.

4.

A link between Prague and Taipei. This link interconnects the Tier2 Regional Computing

Centre for Particle Physics with the Tier1 centre in Taiwan's Academia Sinica Grid

Computing Center.

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