Speaker
Description
MPGD are the new frontier in gas trackers. Among this kind of
devices, the GEM chambers are widely used. The experimental signals acquired with the detector must obviously be reconstructed and analysed. In this
contribution, a new offline software to perform reconstruction,
alignment and analysis on the data collected with APV-25 and TIGER ASICs will
be presented. GRAAL (Gem Reconstruction And Analysis Library) is able to
measure the performance of a MPGD detector with a strip segmented
anode (presently). The code is divided in three parts: reconstruction,
where the hit s are digitized and clusterized; tracking, where an
procedure fits the points from the tracking system and uses that
information to align the chamber with rotations and shifts; analysis,
where the performance is evaluated (e.g. efficiency, spatial
resolution,etc.). The user must set the geometry of the setup and then the
program returns automatically the analysis results, taking care of different
conditions of gas mixture, electric field, magnetic field, geometries,
strip orientation, dead strip, misalignment and many others.
