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Mar 20 – 23, 2023
Campus Garching
Europe/Berlin timezone

Diffraction at the European Spallation Source: instrument simulation and data reduction

Mar 21, 2023, 11:30 AM
SCC/0-002 - Taurus 1&2 (Galileo)

SCC/0-002 - Taurus 1&2


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Talk (17 + 3 min) Neutron Instrumentation, Optics, Sample Environment, Detectors, and Software Data Evaluation & Software 1


Celine Durniak (European Spallation Source ERIC)


The European Spallation Source (ESS) will operate a suite of diffractometers, with the DREAM diffractometer [1] among the first instruments to be commissioned with neutrons. In order to take full advantage of this powerful source and to ensure smooth operation even for first-time users, the ESS Data Management and Software Centre is developing an integrated data pipeline linking all the steps from data acquisition and live visualisation to data analysis. The software used in the data pipeline should be efficient enough to deal with large amounts of data and respond to requirements from the scientific community while providing an intuitive workflow at the same time.
To test this pipeline during the construction phase of ESS and of its instruments, we use instrument simulations with McStas [2], which has to be combined with GEANT4 [3] due to the complex three-dimensional geometry of the new 10B detectors of the ESS diffractometers.
Here we report on preliminary tests of the reduction of powder diffraction data using McStas and GEANT4 simulations of the DREAM instrument and Scipp [4] for the reduction.

[1] Andersen et al., Nucl. Inst. and Methods in Physics Research A 957, 163402 (2020).
[2] Willendrup and Lefmann, Journal of Neutron Research 22, 1 (2020) and 23, 7 (2021).
[3] Allison et al., Nucl. Inst. and Methods in Physics Research Section A 835, 186 (2016).
[4] Heybrock et al., Journal of Neutron Research 22, 169 (2020) and scipp.github.io

Primary author

Celine Durniak (European Spallation Source ERIC)


Florence Porcher (LLB) Irina Stefanescu (European Spallation Source ERIC) Dr Jan-Lukas Wynen (European Spallation Source ERIC) Mikhail Feygenson (European Spallation Source ERIC) Dr Neil Vaytet (European Spallation Source ERIC) Peter Willendrup (DTU Physics) Dr Simon Heybrock (European Spallation Source ERIC)

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