7-11 July 2014
Africa/Johannesburg timezone
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Pulse Shape Analysis: Simulations with ADL and MGS codes

Presented by Mr. Sive NONCOLELA on 9 Jul 2014 from 11:50 to 12:10
Type: Oral Presentation
Session: NPRP
Track: Track B - Nuclear, Particle and Radiation Physics


Evaluation of the tracking capacity of the iThemba LABS segmented clover detector requires a detailed analysis of shapes of the traces registered on the 36 electrodes of the detector. The different shapes reflect different interaction positions of the incident gamma ray. In order to determine these interaction positions, raw experimental pulses are compared to a set of simulated ones, each corresponding to a specific position of the interaction. Accurate parameterization of the crystal geometry, space charge distribution, electron and hole mobilities among other things are needed for simulations to reproduce well the response of the real detector. In addition other factors that result from the response of the detector electronics have to be corrected for. This work aims at performing realistic simulations for the traces of the segmented clover detector. In particular simulations with a second code ADL (AGATA Detector Libraries) [1] were performed and compared with the results from the MGS (Multi-Geometry Simulation) code [2]. The two codes use different approaches to simulate the mobilities of charges, thus it is important to employ and compare both of them. The simulated pulses, generated with the two codes, showed very similar shapes, but they do have slightly different rise times. This difference is attributed to the different parameterization techniques. Experimentally measured pulses will be used for fine tuning the parameterization in the two codes. Such measurements are in progress. Simulations made with the two codes will be presented and discussed in comparison with experimentally measured traces. [1] B. Bryuneel, private conversations [2] P. Medina et al., Inst.and Meas. Tech. Conf., Como, Italy, 18-20 May 2004






Dr Elena Lawrie (elena@tlabs.ac.za) iThemba LABS




Room: D Les 101

Primary authors