Speaker
Description
This work is dedicated towards characterisation of Timepix ASIC-based GridPix detector with 21 mm drift length using measurements performed at the ELSA accelerator in Bonn. The Gridpix detector is operated as a tracking detector with the incoming electron beam travelling along the drift length of the detector with specific angular configurations creating tracklets. An electron clustering and track reconstruction algorithm based on HDBSCAN and Kalman filtering has been developed. Geant4 based simulation studies have been conducted and the detector angular specifications, employed during test beam campaigns are recreated. The main focus of this study is the development of a response model which can recreate realistic angular and spatial characteristics of the GridPix detector directly from Geant4 truth for any tracklet configuration. The test beam measurements show that the Gridpix angular resolutions are of order 5–10 mrad and are reproduced by the response model to typically 10–20%, with the residual discrepancies indicating effects that require further modelling. The response model provides a first framework for translating Geant4 truth information directly into reconstructed GridPix track observables.
| Name of the speaker | Konstantinos Spyrou |
|---|---|
| Eligible for the Georges Charpak Young Scientist Award. | yes |