2010 -
2010 -
The Large Hadron Collider (LHC) started to operate in November 2009. Huge event rates make the computing in CMS experiment a tremendous challenge. Up to a thousand million proton-proton collisions, with hundreds of particles in each, take place every second. Electric signals from thousands of particles are processed parallel in millions of measurement channels with the rate of 40 MHz, i.e. once in every 25 ns. The on-line trigger and data acquisition system must be capable of extremely fast and reliable selection and processing of the potentially interesting events in order to reduce the rate to match the mass storage recording speed. The events of some 1MB of storage size will be recorded at the rate of 50-100 Hz yielding raw data volumes of the order of a petabyte (1000 TB) every year. Efficient and precise off-line processing and analysis of this huge amount of data is a key issue for the success of the CMS experiment in the race for fundamental physics discoveries.
The HIP physics analysis team takes active part in the CMS computing, software and analysis effort. The activities range from detector and physics simulation studies in view of exploring the CMS physics performance to the reconstruction and analysis of the events. Detailed analysis of the CMS detector performance, based on massive Monte Carlo event productions, was reported in Physics Technical Design Report Volume I (31.4 MB) and the CMS physics performance in Physics Technical Design Report Volume II (25.8 MB).
The CMS simulation and reconstruction software CMSSW, based on object oriented techniques, is in the commissioning phase. The Computing Technical Design Report (1025 kB) for CMS Computing defines the guidelines for the CMS computing procedures. An important issue is the world-wide organization of massive data processing which will take place in a number of Regional Centres in Europe and in the USA.
was completed by the end of 2009.
was completed by the end of 2006. The project was evaluated by an international evaluation team on May 22, 2006 at CERN.
The talks, presented by the project members in the evaluation meeting
with the referees, gave a comprehensive picture of the status and recent
achievements in the project:
Presentations in the evaluation meeting
Here is the evaluation report from the referees (Word file).