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![Introduction
Project
PAW to ROOT translation of several .kumac macro files in
order to build a framework/tool for Geant4 models testing
Building an underlying unified database for the models testing
PAW: Physics Analysis Workstation
Provides interactive graphical presentation and statistical or
mathematical analysis (FORTRAN)
ROOT
cf. Fons Rademakers lecture: Introduction to ROOT [1]
Geant4
Toolkit for the simulation of the passage of particles through
matter
12/8/20093 r.atachiants@student.maastrichtuniversity.nl](https://image.slidesharecdn.com/3-presentation-atachiants-130821130713-phpapp01/75/Geant4-Model-Testing-Framework-From-PAW-to-ROOT-3-2048.jpg)
![PAW to ROOT Conversion (1)
Some useful information can be found in:
http://root.cern.ch/root/HowtoConvertFromPAW.html
PAW vectors treated as ROOTTTrees
The C++ methods of ROOT are more comprehensive
than the PAW shortcuts, for example:
PAW handles histograms using ID’s an in ROOT one can
extract the pointer by ID: gDirectory->Get(ID), and than use
this pointer for different functions.
PAW [put/get]/[abscissa/error/content] are loops in ROOT:
get/abs [id]([hf]:[hn]) wx
TAxis* axis = hDT->GetXaxis();
for(Int_t i = 0; i< hnbin; ++i) vZeroLevels[i] = axis->GetBinCenter(i);
12/8/20095 r.atachiants@student.maastrichtuniversity.nl](https://image.slidesharecdn.com/3-presentation-atachiants-130821130713-phpapp01/75/Geant4-Model-Testing-Framework-From-PAW-to-ROOT-5-2048.jpg)
![References
[1] Rademakers F., CERN Summer Student Lecture,
Introduction to ROOT
[2] ROOT User’s Guide, http://root.cern.ch/root/doc/
RootDoc.html
[3] PAW – Physics Analysis Workstation, http://
wwwasd.web.cern.ch/wwwasd/paw/
[4] Geant4 - http://www.geant4.org/geant4/
12/8/200911 r.atachiants@student.maastrichtuniversity.nl](https://image.slidesharecdn.com/3-presentation-atachiants-130821130713-phpapp01/75/Geant4-Model-Testing-Framework-From-PAW-to-ROOT-11-2048.jpg)
Uploaded byRoman Atachiants
Geant4 Model Testing Framework: From PAW to ROOT
Roman Atachiants developed a framework to test Geant4 models that translates macros from PAW (Physics Analysis Workstation) to ROOT. The framework builds a unified database for model testing and allows comparing data points from experiments to simulation curves. It includes ROOT libraries, Geant4 test programs, and helpers for simulation, analysis, and plotting. The port from PAW to ROOT provides more comprehensive statistical analysis capabilities and allows obtaining better comparison results with larger statistics.
Geant4 Model Testing Framework: From PAW to ROOT
- 1. Geant4 Model TestingFramework: From PAW to ROOT Author: Roman Atachiants (PH-SFT) Supervised by: Mikhail Kosov (PH-SFT) 12/08/2009 Summer Student Presentation 12/8/20091 [email protected]
- 2. Contents Introduction PAW?ROOT? Geant4? Model comparison 101 Framework PAW to ROOT Conversion Architectural Overview Usage Conclusions and Future Work References 12/8/20092 [email protected]
- 3. Introduction Project PAWto ROOT translation of several .kumac macro files in order to build a framework/tool for Geant4 models testing Building an underlying unified database for the models testing PAW: Physics Analysis Workstation Provides interactive graphical presentation and statistical or mathematical analysis (FORTRAN) ROOT cf. Fons Rademakers lecture: Introduction to ROOT [1] Geant4 Toolkit for the simulation of the passage of particles through matter 12/8/20093 [email protected]
- 4. The goal isto compare the data points with the simulation curves 12/8/20094 [email protected]
- 5. PAW to ROOTConversion (1) Some useful information can be found in: http://root.cern.ch/root/HowtoConvertFromPAW.html PAW vectors treated as ROOTTTrees The C++ methods of ROOT are more comprehensive than the PAW shortcuts, for example: PAW handles histograms using ID’s an in ROOT one can extract the pointer by ID: gDirectory->Get(ID), and than use this pointer for different functions. PAW [put/get]/[abscissa/error/content] are loops in ROOT: get/abs [id]([hf]:[hn]) wx TAxis* axis = hDT->GetXaxis(); for(Int_t i = 0; i< hnbin; ++i) vZeroLevels[i] = axis->GetBinCenter(i); 12/8/20095 [email protected]
- 6. PAW to ROOTConversion (2) Exactly the same result is achieved 2 modes of analysis: Secondaries per Model Models per Secondary 12/8/20096 [email protected]
- 7. Architectural Overview ROOT • CINT • Introspection • MonteCarlo extensions (ParticlePDG) • 10+ libraries Test programs, on top of Geant4 • Test 19 and Test 29 • By Mikhail Kosov Data Model for Publications and Simulations • DataObject and DataItemObject.. • Extended ParticlePDG DataBase (With Secondary Fragments) Helpers and Utilities • Plotting • Simulating Tools: Simulation and Analysis 12/8/20097 [email protected]
- 8. Usage // Exampleof a ROOT Macro that launches the Geant4 model testing { // load the Library gSystem->Load("libG4ModelTester.so"); // run the simulation (proj.: p , targ.:Al27, 90 MeV) gSimulationTool->Run(1000010010, 1000130270, 90, 450, ”preco”); } 12/8/20098 [email protected]
- 9. Conclusions and FutureWork The universal experimental DB for model testing in Geant4 is completed, but still can be improved (designed to be) Show that ROOT can give bigger statistics and therefore better comparison results than PAW. The main reason for the PAW to ROOT porting ROOT Graphical User Interface for easier use of the tool (using the power of the framework) 12/8/20099 [email protected]
- 10. Thank you foryour attention! 12/8/200910 [email protected]
- 11. References [1] RademakersF., CERN Summer Student Lecture, Introduction to ROOT [2] ROOT User’s Guide, http://root.cern.ch/root/doc/ RootDoc.html [3] PAW – Physics Analysis Workstation, http:// wwwasd.web.cern.ch/wwwasd/paw/ [4] Geant4 - http://www.geant4.org/geant4/ 12/8/200911 [email protected]