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HK: Fachverband Hadronen und Kerne
HK 63: Accelerators and Instrumentation II
HK 63.7: Talk
Wednesday, March 18, 2009, 18:30–18:45, H-ZO 90
Determination of pulse shape starting time using neural networks — •Michael Schlarb, Roman Gernhäuser, and Reiner Krücken — Physik-Department E12, TU München
The Advanced Gamma Tracking Array (AGATA) which is currently being built, is a 4 π- detector of highly-segmented germanium crystals. For the purpose of a full reconstruction of the interaction locations within the detector a pulse shape analyis is performed, using a direct comparison between experimental and simulated signal. A prerequisite to achieve the necessary position resolution is a precise knowledge of the signals starting time t0. It is preferable to have t0 determined before the actual pulse shape analysis is conducted since it significantly simplifies the task of the latter. The influence an imprecise knowledge of t0 has on the attainable position resolution is presented. Furthermore we investigated the use of neural networks to properly determine the starting time and generally achieved good results.
∗ funded by BMBF(06MT238),EURONS(T-J02-3), DFG (Exz-Clust 153-Universe)