Status of SICB
Agnieszka Jacholkowska
24/11/1999
A. Jacholkowska
1
Status of SICB/1

Detector description

frozen with version 220 :

Muons, Calorimeters, RICHes updated
 Tracking - errors tuned, still unexplained efficiency losses
 Realistic (pessimistic) Beam Pipe
 Warm Magnet

revised by R. Lindner:

24/11/1999
materials and geometry 
few corrections to the data base
A. Jacholkowska 3rd LHCb Software week
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Status of SICB/2

Software status of v220



libraries and executables installed on
RSPLUS, HPPLUS, Linux, PCSF(NT)
built with CMT tool - about 40 packages
QQ does not work as decay engine in Lyon (RS and HP)
Pythia used instead  to be debugged
reconstruction runs only on:

RSPLUS, Linux (efficient)
 PCSF : problems of overflow protections (see E.v H.)

new algorithms expected

Background parameterization with GCALOR (A.T.)
  0 reconstruction in ECAL (I. K.)
 eventually, tracking upgrade if origin of losses found
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Status of SICB/3

book keeping data base project

Model ready
Tables in Oracle system
access from outside labs tested
“preliminary prototype” on WEB
 missing : interfaces (API, user)
delays in prototype delivery (foreseen end 1999)
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Status of SICB/4

MC production
MC samples : PCSF, RAL, Lyon
DST samples : RSPLUS, LINUX (CERN)

trigger optimization
mbias, mbias + diffraction, b inclusive, Bd  (e)X
and reference channels Bd  +--, Bd  J/y KºS , ...
 150k MC events produced

different types of DSTs for mbias sample

DST1 standard, single event
 DST2 piluped events following to L = 2 x 1032
 DST3 piluped events following to L = 5 x 1032


90k DST1 events produced
PHYSICs : after validation tests by analysers,
important contribution of b inclusive events from RAL
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Status of SICB/5

Future plans


generators and detector description frozen for :
Physics (and Trigger optimisation) - version 220
for detector optimization :
all parts could be revisited (beam pipe,muons,calos, …)

intensive studies of backgrounds are foreseen
 build subversions of v220
 produce test data


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with version 220 more than 2000k events produced
before end of 2000
work on reconstruction will continue
 possible reprocessing of data for physics in 2000
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Status of SICB/6

Summary

Trigger optimization data produced with version 220

contains latest detector description
(Warm Magnet, realistic Beam Pipe, …)
 PYTHIA 6.125 and QQ package
 modular software (CMT) distributed over different labs
CERN, RAL, Lyon.

Detector optimization will need in future test samples
 importance of background studies

Production for Physics aims to provide in 2000 :
2000k b inclusive events and all studied physics channels

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Book keeping project : important for CERN and outside
labs
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