Development of a procedure for hyper-pure germanium detector response calibration combining experimental measurements with Monte Carlo simulations

• Antragsteller: Professor Dr. Lorenzo Brualla Barbera
• Fachliche Zuordnung: Kern- und Elementarteilchenphysik, Quantenmechanik, Relativitätstheorie, Felder
• Förderung: Förderung von 2011 bis 2015
• Projektkennung: Deutsche Forschungsgemeinschaft (DFG) - Projektnummer 200971961

Knowledge of the efficiency curve of hyper-pure germanium (HPGe) detectors is essential for a broadrange of applications. However, its accurate determination requires lengthy and costly experiments.Although there have been some attempts in the past to produce a method based on Monte Carlosimulations of the detector to make less difficult to obtain the efficiency curve, none of them hasreached accuracies better than 5%. During the proposed project we intend to perform a systematicstudy of all major parameters that determine the agreement between an experimental and a simulated efficiency curve. We shall take into account the dimensions of the crystal, the modelling of dead layers, the incomplete charge collection, the electric field in the detector and charge carrier traps. The objective is to produce a method for determining the efficiency curve in which not only the agreement of the full energy peak is sought, but also of the single and double escape peaks and the continuum part of the spectrum.

• DFG-Verfahren: Sachbeihilfen
• Internationaler Bezug: Brasilien
• Partnerorganisation: Fundaçao de Amparo a Pesquisa do Estado de Sao Paulo - FAPESP
• Beteiligte Personen: Dr. Nora Lia Maidana; Professor Dr. Vito Roberto Vanin