Speaker
Dr
Hans-Joachim Wenzel
(Fermi National Accelerator Lab. (US))
Description
We describe the Geant4 physics validation repository and the technology used
to implement it. The Geant4 collaboration regularly performs validation and regression tests where results
obtained with a new Geant4 version are compared to data obtained by various HEP experiments
or the results of previous releases. As the number of regularly performed validation tests
increases and the collection of results grows, storing them and making them available to the
collaborators and users community becomes a challenge. We decided to organize the materials
in one central repository and to make this data easily available via a web application.
The Physics Validation Repository consists of three components:
The first component is a PostgresSQL relational database that stores both simulated and experimental data
in form of images with meta data or raw data points. The meta data describes the test and lists the references
from where the experimental data for comparison was obtained from, as well as other parameters that describe the test
(e.g. beam particle, target material, etc.). The second component is a Java API which is based on the data
access object (DAO) design pattern and provides an abstract interface to the database. Finally a web application
based on Java Platform, Enterprise Edition (Java EE) is deployed on a GlassFish Application server. The web application
allows to interactively select and overlay compatible data, e.g. to compare the results of different releases,
different physics models or target materials in one plot.
The web application also provides security and authentication to grant access to groups of functions and data
that are internal to the Geant4 collaboration, e.g. viewing results from development releases, upload of new tests
and/or modification of selected tests.
We use the PrimeFaces JSF (Java Server Faces) Framework to create interactive, modern looking web interfaces and
the jfreechart java library or the Highcharts JavaScript library for plotting.
Primary Authors:
Wenzel, Hans
Yarba, Julia
On behalf of the Physics Validation Working Group of the Geant4 Collaboration
Primary author
Dr
Hans-Joachim Wenzel
(Fermi National Accelerator Lab. (US))
Co-author
Julia Yarba
(Fermi National Accelerator Lab. (US))
