Software workshop summary Helge Meinhard / CERN-EP Atlas software workshop 21 May 1999.
UCL Atlas Software Work
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Transcript of UCL Atlas Software Work
04/19/23 Jonathan Couchman 1
UCL Atlas Software Work
• Atlas Fast Simulation (Atlfast)
• Jet Reconstruction Pt.1 (KtJet)
• Jet Reconstruction Pt. 2 (JetRec)
• Physics Analysis Package (PAP)
• Quality Assurance (QA)
• Graphics (JiveXML & Atlantis)
• Physics Studies
04/19/23 Jonathan Couchman 2
UCL Atlas Software Team
• Jon Butterworth
• Jon Couchman
• Janice Drohan
• Nikos Konstantinidis
• Peter Sherwood
• Ben Waugh
04/19/23 Jonathan Couchman 3
AtlfastJ. Couchman & P. Sherwood
• Fast Simulation of Atlas Detector• Objected Orientated C++ implementation• Basic Reconstruction• Simple Smearing Parameterizations
• Extensions– Massive Jets– KT Clustering Algorithm– Fast Shower
04/19/23 Jonathan Couchman 6
KtJetJ. Butterworth, J. Couchman, B. Waugh & B. Cox (Man.)
• OO implementation of KT clustering Algorithm• Written in C++• Optimized For Performance• Identical Results to Fortran• Much Faster That Fortran• Easily Extendable• www.ktjet.org
04/19/23 Jonathan Couchman 7
KtJetJ. Butterworth, J. Couchman, B. Waugh & B. Cox (Man.)
Program
Fortran (DP)KtJet (DP)KtJet (SP)
04/19/23 Jonathan Couchman 10
JetRecJ. Couchman
• Interface Atlfast With Jet Reconstruction
• Implement KtJet in Atlas Frame Work– KtJet Main (only?) reconstruction Algorithm!
Develop new JetRec Algorithms– Seeded Cone– Seedless Cone
04/19/23 Jonathan Couchman 11
PAPJ. Couchman, P. Sherwood
Physics Analysis Package
Analysis Objects Utilities Analysis Algorithms
• Common Atlas Analysis Interfaces• Useful C++ Utility Programs• Example Analysis Algorithms
04/19/23 Jonathan Couchman 12
Atlas QAP. Sherwood
• Improve Productivity By Increasing Quality
RequirementsCapture
Analysis
Design
Implementation
testing
Release
ReviewsStandardsToolsDocumentation
04/19/23 Jonathan Couchman 13
JiveXML & AtlantisJ. Couchman, J. Drohan, N. Konstantinidis, P. Sherwood,
H. Drevermann (CERN) & G. Taylor (Santa Cruz)
• Atlas Graphical Event Display (and much more!)
04/19/23 Jonathan Couchman 17
Physics StudiesJ. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)
• WW scattering
04/19/23 Jonathan Couchman 18
Physics StudiesJ. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)
• Using Atlfast Generate– 500K Signal Events– 5M+ Background Events
• Use Both Kt and Cone Clustering Algo’s
• Find Parameters For “Best” Resolutions
• Compare Results– Cone to Kt– Simulated to Generated Events
04/19/23 Jonathan Couchman 19
Physics StudiesJ. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)
04/19/23 Jonathan Couchman 20
Physics StudiesJ. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)