Susanna Guatelli

1
Test Analysis Project
Statistical Toolkit Meeting Geant4
General Physics Test AIDA Workshop CERN
2thJuly 2003
Proton Bragg Peak

• Susanna Guatelli
• CERN, INFN Genova

http//www.ge.infn.it/geant4/analysis/TandA
2
What is the Test Analysis project?

• Test Analysis is a project to develop a
  statistical analysis system
• for usage in Geant4 testing

• Main application areas

• Provide tools to compare Geant4 simulation
  results with reference data
• equivalent reference distributions (for
  instance, regression testing)
• experimental measurements
• data libraries from reference distribution
  sources
• functions deriving from theoretical calculations
  or from fits

3
Flow of the test and analysis process
3. First results, first evaluations
1. Study of the test to perform
2. Realisation of the test
Next test
Regression test
4. Automatisation Of the test
8. Evaluation of the results
Benchmarks about G4 Physics models
What is ok? What must be improved?
7. Results of Statistic comparison G4test /
ref.data
5. Physics distributions
6. Statistics toolkit
4
Physics Tests present situation

• Particle CSDA range
• Particle Stopping Power
• Transmission coefficient
• Backscattering coefficient
• Gamma Attenuation coefficient
• Gamma processes cross
• section

• Electromagnetic
• physics

• Hadronic
• physics

• Proton Bragg Peak
• Study of possible tests to perform

• Angular distribution
• Auger effect
• Fluorescence

Next step
5
Test results

• G4LowE EPDL
• G4Standard
• NIST reference data

The Test uses AIDA/Anaphe for the analysis

• xml file
• (vector of points x, y, ex, ey )
• .hbk file
• (histograms, ntuple)

• Test output

• Now in regime condition the production is about
  1360 .xml files
• Observation now few tests are running
• Future problem management of the large amount of
  results

Pb Stopping Power
6
Essential features of Statistical Toolkit

• Management of both .xml and .hbk files
• Management of vector of points, histograms and
  ntuples
• Statistical study of both discrete and
  continuous distributions
• Management and statistical study of data
  affected or not by errors
• Simple user interface

Open problems...

• The test should be inserted in Geant4 regression
  test as routine test
• Interface between Geant4 General
• Physics Test and Statistical Toolkit is
• missing
• Automatisation of the system test analysis
• Management of Test50 and Statistical Toolkit
  results

7

• The performed tests were established
• with the help of
• Vladimir Ivanchenko (CERN)
• Michelle Maire (CERN)
• Maria Grazia Pia (INFN, Genova)
• Coordinators
• Susanna Guatelli (CERN, INFN, University of
  Genova)
• Barbara Mascialino (INFN, Genova)
• Realisation of tests
• Pablo Cirrone (INFN Catania)
• Susanna Guatelli
• Alfonso Mantero (University of Genova, ESA)
• Luciano Pandola (INFN, Gran Sasso)
• Automatisation of test in results
• production
• Sandra Parlati (INFN, Gran Sasso)

Team of Geant4 Test

• Statistical analysis
• Stefania Donadio (INFN, Genova)
• Barbara Mascialino
• Paolo Viarengo (IST, Genova)