7 research outputs found
FROG: The Fast & Realistic OPENGL Displayer
FROG is a generic framework dedicated to visualisation of events in high
energy experiment. It is suitable to any particular physics experiment or
detector design. The code is light (<3 MB) and fast (browsing time ~20 events
per second for a large High Energy Physics experiment) and can run on various
operating systems, as its object-oriented structure (C++) relies on the
cross-platform OPENGL and GLUT libraries. Moreover, FROG does not require
installation of third party libraries for the visualisation. This document
describes the features and principles of FROG version 1.106, its working scheme
and numerous functionalities such as: 3D and 2D visualisations, graphical user
interface, mouse interface, configuration files, production of pictures of
various format, integration of personal objects, etc. Finally, several examples
of its current applications are presented for illustration.Comment: 26 pages, 15 figure
International Large Detector: Interim Design Report
The ILD detector is proposed for an electron-positron collider with collision
centre-of-mass energies from 90~\GeV~to about 1~\TeV. It has been developed
over the last 10 years by an international team of scientists with the goal to
design and eventually propose a fully integrated detector, primarily for the
International Linear Collider, ILC.
In this report the fundamental ideas and concepts behind the ILD detector are
discussed and the technologies needed for the realisation of the detector are
reviewed.
The document starts with a short review of the science goals of the ILC, and
how the goals can be achieved today with the detector technologies at hand.
After a discussion of the ILC and the environment in which the experiment will
take place, the detector is described in more detail, including the status of
the development of the technologies foreseen for each subdetector. The
integration of the different sub-systems into an integrated detector is
discussed, as is the interface between the detector and the collider. This is
followed by a concise summary of the benchmarking which has been performed in
order to find an optimal balance between performance and cost. To the end the
costing methodology used by ILD is presented, and an updated cost estimate for
the detector is presented. The report closes with a summary of the current
status and of planned future actions.Comment: Editors: Ties Behnke, Karsten Buesser, Keisuke Fujii, Frank Gaede,
Kiyotomo Kawagoe, Jenny List, Akiya Miyamoto, Claude Vall\'ee, Henri Videa
Tests of a particle flow algorithm with CALICE test beam data
The studies presented in this paper provide a first experimental test of the Particle Flow Algorithm (PFA) concept using data recorded in high granularity calorimeters. Pairs of overlaid pion showers from CALICE 2007 test beam data are reconstructed by the PandoraPFA program developed to implement PFA for a future lepton collider. Recovery of a neutral hadron's energy in the vicinity of a charged hadron is studied. The impact of the two overlapping hadron showers on energy resolution is investigated. The dependence of the confusion error on the distance between a 10 GeV neutral hadron and a charged pion is derived for pion energies of 10 and 30 GeV which are representative of a 100 GeV jet. The comparison of these test beam data results with Monte Carlo simulation is done for various hadron shower models within the GEANT4 framework. The results for simulated particles and for beam data are in good agreement thereby providing support for previous simulation studies of the power of Particle Flow Calorimetry at a future lepton collider