DELSIM is the standard DELPHI Simulation software package. The composition is a steering skeleton to which various event generators may be plugged in. Each detector group provides its individual code to co-exist with the entire DELPHI Detector set up. The DELPHI Detector Description and Calibration Database is needed to track through detector modules (using DDAPP) and to guarantee events being reconstructed as close as possible to real Events. The output of raw-data structure for the Simulation Events can be either with a perfect Detector or (using the Calibration and Status files on the CARGO Database) reflecting Run conditions as for real Data written at the Pit. You may access here some constants and branching ratios used in the different DELSIM processings.
A decision of CERN's Cocotime (Committee for computer time allocation) stipulates that the main simulation production for all major experiments has to be produced outside CERN. A coordinator (see Simulation Team above) has to make sure that The Time Ranges for the Database selections are respected. Events are generated with different Random number seeds. Programme versions and Snapshot Databases are correctly installed These requirements are very important to ensure coherent datasets for big samples, or for specific needs expressed by the Physics teams. The Simulated RAW data is written on tape, kept in the Lab which produces Simulated Events, for eventual reprocessing through DELANA. Only the main output stream of DELANA (DST only) is then transported to the Central Tape Vault at CERN for general use. The DST-output cassette numbers are assigned by the Simulation coordinator, or, Anita Bjorkebo to avoid double numbers. The TMS-libraries are looked after by the DELPHI Group for Central Computing, subsequent copies into the Robots and entries to FATMEN. The Simulation DST database is kept up-to-date and may be consulted via WWW by clicking here. The supervision of this database is done by Pierre Lutz For the Sending of data to CERN, it is important to have the correct address within CERN in order to avoid delays. CERN IT-DIVISION TAPE VAULT BUILDING 513 att. DELPHI - experiment 1211 GENEVE 23 SWITZERLAND The Tape vault group will then contact the DELPHI Group for Central Computing at arrival of the data.An E-mail to J.F.Lachavanne ,Tzanko Spassoff ,Anita Bjorkebo
is necessary to announce the sending and the data-contents for book- keeping and NEWS. For Cassette expeditions FROM CERN to some collaborating lab, an e-mail to
is needed in order to get it organized properly.References :
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