16-19 October 2016
Copenhagen University
Europe/Copenhagen timezone

Event classification and performance diagnostics software for GEM neutron detectors

17 Oct 2016, 17:00
1h 30m
Marble Hall (Copenhagen University)

Marble Hall

Copenhagen University

Thorvaldsensvej 40
Board: 30
Poster Posters


Martin Shetty (European Spallation Source ERIC)


The Macromolecular Diffractometer (NMX) instrument at the European Spallation Source will use novel Gadolinium gas electron multiplier (GEM) detectors for improved efficiency and spatial resolution. In the data acquisition chain, a software event formation step will deduce position and time of an incident neutron from charge deposition data by means of the time projection chamber (uTPC) technique. As part of the Horizon 2020 project BrightnESS, charge deposition events from detector trails are classified and analyzed according to a variety of criteria, producing a set of quality indicators for each event. In addition to bettering the scientific understanding of how these detectors work, the results will enable the prototyping and evaluation of efficient algorithms to be used in the final data acquisition chain at the NMX station. The software can also form the basis of diagnostic and quality control tools for operations. The results of these analyses will be presented as well as conclusions on best criteria for accepting reliable events.

Primary author

Martin Shetty (European Spallation Source ERIC)


Carsten Søgaard (NBI) Dorothea Pfeiffer (European Spallation Source ERIC) Stig Skelboe (European Spallation Source ESS AB) Tobias Richter (European Spallation Source ERIC) Troels Blum (KU)

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