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
22/11/2018
Jonathan Couchman

2. UCL Atlas Software Team
Jon Butterworth
Jon Couchman
Janice Drohan
Nikos Konstantinidis
Peter Sherwood
Ben Waugh
22/11/2018
Jonathan Couchman

3. Atlfast J. 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
22/11/2018
Jonathan Couchman

4. Atlfast J. Couchman & P. Sherwood
22/11/2018
Jonathan Couchman

5. Atlfast J. Couchman & P. Sherwood
Unsmeared
Smeared
22/11/2018
Jonathan Couchman

6. KtJet J. 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
22/11/2018
Jonathan Couchman

7. KtJet J. Butterworth, J. Couchman, B. Waugh & B. Cox (Man.)
Program
Fortran (DP)
KtJet (DP)
KtJet (SP)
22/11/2018
Jonathan Couchman

8. KtJet J. Butterworth, J. Couchman, B. Waugh & B. Cox (Man.)
22/11/2018
Jonathan Couchman

9. KtJet J. Butterworth, J. Couchman, B. Waugh & B. Cox (Man.)
22/11/2018
Jonathan Couchman

10. JetRec J. 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
22/11/2018
Jonathan Couchman

11. PAP J. Couchman, P. Sherwood
Common Atlas Analysis Interfaces
Useful C++ Utility Programs
Example Analysis Algorithms
22/11/2018
Jonathan Couchman

12. Atlas QA P. Sherwood Reviews Tools Documentation
Improve Productivity By Increasing Quality
Reviews
Standards
Tools
Documentation
22/11/2018
Jonathan Couchman

13. JiveXML & Atlantis J. Couchman, J. Drohan, N. Konstantinidis, P
JiveXML & Atlantis J. Couchman, J. Drohan, N. Konstantinidis, P. Sherwood, H. Drevermann (CERN) & G. Taylor (Santa Cruz)
Atlas Graphical Event Display (and much more!)
22/11/2018
Jonathan Couchman

14. 22/11/2018
Jonathan Couchman

15. 22/11/2018
Jonathan Couchman

16. 22/11/2018
Jonathan Couchman

17. Physics Studies J. Couchman, J. Butterworth, B. Cox (Man. ) & F
Physics Studies J. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)
WW scattering
22/11/2018
Jonathan Couchman

18. Physics Studies J. Couchman, J. Butterworth, B. Cox (Man. ) & F
Physics Studies J. 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
22/11/2018
Jonathan Couchman

19. Physics Studies J. Couchman, J. Butterworth, B. Cox (Man. ) & F
Physics Studies J. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)
22/11/2018
Jonathan Couchman

20. Physics Studies J. Couchman, J. Butterworth, B. Cox (Man. ) & F
Physics Studies J. Couchman, J. Butterworth, B. Cox (Man.) & F. Nauyock (Man.)
22/11/2018
Jonathan Couchman

21. 22/11/2018
Jonathan Couchman