Abstract
Until recently, the direct visualization of the complete ATLAS experiment geometry and physics objects was confined within the software framework of the experiment. To provide a detailed interactive data visualization capability to users, as well as easy access to geometry data, and to ensure platform independence and portability, great effort has been recently put into the modernization of both the core kernel of the detector description and the visualization tools. In this proceedings we will present the new tools, as well as the lessons learned while modernizing the experiment’s code for an efficient use of the detector description and for user-friendly data visualization.
Highlights
1 Introduction In ATLAS [1], as in most other High Energy Physics experiments, a detailed and accurate detector geometry description as well as interactive visualization is needed for a number of different tasks
The absence of persistification mechanisms for GeoModel, makes it impossible to share the geometry description with applications outside of the Athena framework We have recently addressed these issues by extracting the GeoModel kernel from the Athena codebase and making it a standalone library
After making GeoModel a standalone library, it was possible to solve this issue by designing and developing a new mechanism [11] to get a persistent copy of the detector geometry; Figure 3 shows a diagram of its current architecture
Summary
In ATLAS [1], as in most other High Energy Physics experiments, a detailed and accurate detector geometry description as well as interactive visualization is needed for a number of different tasks. These tasks range from detector development, to the validation of the algorithms used for reconstruction of the physics objects from measurements, from the validation of simulations to the documentation of physics results and presentation of discoveries. Its integration in the experiment’s offline software framework Athena [5] makes it possible to access all possible data from the experiment, and limits its usage The goal of this proceedings is to present recent developments towards standalone and experiment-agnostic software libraries and applications, to be used in HEP experiments. A new standalone GeoModel toolkit, and a new standalone, lightweight event display, called VP1-Light
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