https://doi.org/10.1140/epja/i2011-11131-3
Special Article - Tools for Experiment and Theory
Pulse shape analysis for γ-ray tracking (Part II): Fully informed particle swarm algorithm applied to AGATA
1
Physik-Department E12, Technische Universität München, D-85748, Garching, Germany
2
TRIUMF, Vancouver, Canada
* e-mail: Michael.Schlarb@ph.tum.de
Received:
16
June
2011
Accepted:
29
September
2011
Published online:
27
October
2011
AGATA is an array of highly segmented HPGe detectors using the technique of 
-ray tracking to reconstruct the scattering path of -rays interacting within the active material. A basic requirement therefore is a precise reconstruction of the individual interaction locations within the detectors. This is possible through the use of pulse shape analysis (PSA) which, however, has to be conducted in real time due to the high data rates expected. We report on the use of a fully informed particle swarm (FIPS) algorithm for PSA. The achieved position resolution, in the order of a few millimeters, is within the requirements of a -ray tracking array. The energy resolutions in Doppler-corrected spectra of a simulated in-beam experiment are comparable to those of a non-real-time extensive PSA based on a full grid search.
© SIF, Springer-Verlag Berlin Heidelberg, 2011
