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

Experimental Setup for Neutron Pulse Measurement at Early-stage ESS Test Beamline

Mar 20, 2023, 4:00 PM
Yards 4 - 6 (Fakultät für Maschinenwesen)

Yards 4 - 6

Fakultät für Maschinenwesen

Board: MO-041
Poster Neutron Instrumentation, Optics, Sample Environment, Detectors, and Software Poster Session MONDAY


Thawatchart Chulapakorn (European Spallaion Source (ERIC))


A dedicated test beamline (TBL) is being built to provision the commissioning of the ESS spallation source. The functionality of the beamline employs “camera obscura” principle, which allows to observe both thermal and cold neutrons emitted from different parts of the so-called butterfly moderator. The layout of TBL simply consists of a tapered collimator and a changeable pinhole with diameters of 1-10 mm. During the early stage of commissioning, the proton energy will be 570 MeV, corresponding to 100 kW and expectedly generate thermal-cold flux of 105 n/cm2/s on the TBL instrument. Besides the spatial neutron emission, this contribution will detail how the neutron pulse shapes will be measured, e.g. by Bragg diffraction from a monochromator crystal, Bragg dip transmission or the pinhole time-of-flight method.

Primary author

Thawatchart Chulapakorn (European Spallaion Source (ERIC))


Dr Andrew Jackson (European Spallaion Source (ERIC)) Dr Douglas Di Julio (European Spallaion Source (ERIC)) Gabor Laszlo (European Spallaion Source (ERIC)) Nicolas Breton (European Spallaion Source (ERIC)) Dr Robin Woracek (European Spallaion Source (ERIC)) Dr Stephen Hall (Lund University)

Presentation materials

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