Event-based processing of neutron scattering data at the Spallation Neutron Source

被引：37

作者：

Granroth, Garrett E. ^{[1
]}

An, Ke ^{[1
]}

Smith, Hillary L. ^{[2
]}

Whitfield, Pamela ^{[1
,3
]}

Neuefeind, Joerg C. ^{[1
]}

Lee, Jooseop ^{[1
,4
]}

Zhou, Wenduo ^{[1
]}

Sedov, Vladislav N. ^{[5
]}

Peterson, Peter F. ^{[1
]}

Parizzi, Andre ^{[1
]}

Skorpenske, Harley ^{[1
]}

Hartman, Steven M. ^{[5
]}

Huq, Ashfia ^{[1
]}

Abernathy, Douglas L. ^{[1
]}

机构：

[1] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37830 USA

[2] CALTECH, Dept Appl Phys & Mat Sci, Pasadena, CA 91125 USA

[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[4] Cornell Univ, CHESS, Ithaca, NY USA

[5] Oak Ridge Natl Lab, Neutron Technol Div, Oak Ridge, TN USA

来源：

JOURNAL OF APPLIED CRYSTALLOGRAPHY | 2018年 / 51卷

关键词：

neutron diffraction; stroboscopic experiments; event-based data processing; spectroscopy; FERROELECTRIC PHASE-TRANSITION; WROUGHT MAGNESIUM ALLOY; MILLISECOND TIME-SCALE; DEFORMATION DYNAMICS; TRANSIENT PROPERTIES; INDUCED PLASTICITY; DIFFRACTION; LIQUID; TRANSFORMATION; RESOLUTION;

D O I：

10.1107/S1600576718004727

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Spallation Neutron Source at Oak Ridge National Laboratory, USA, ushered in a new era of neutron scattering experiments through the use of event-based data. Tagging each neutron event allows pump-probe experiments, measurements with a parameter asynchronous to the source, measurements with continuously varying parameters and novel ways of testing instrument components. This contribution will focus on a few examples. A pulsed magnet has been used to study diffraction under extreme fields. Continuous ramping of temperature is becoming standard on the POWGEN diffractometer. Battery degradation and phase transformations under heat and stress are often studied on the VULCAN diffractometer. Supercooled Al2O3 was studied on NOMAD. A study of a metallic glass through its glass transition was performed on the ARCS spectrometer, and the effect of source variation on chopper stability was studied for the SEQUOIA spectrometer. Besides a summary of these examples, an overview is provided of the hardware and software advances to enable these and many other event-based measurements.

引用

页码：616 / 629

页数：14

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