Pulse shape analysis for gamma-ray tracking (Part II): Fully informed particle swarm algorithm applied to AGATA

作者：Schlarb M^*; Gernhaeuser R; Klupp S; Kruecken R

来源：European Physical Journal A, 2011, 47(10): 131.

DOI：10.1140/epja/i2011-11131-3

AGATA is an array of highly segmented HPGe detectors using the technique of gamma-ray tracking to reconstruct the scattering path of gamma-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.

• 出版日期2011-10