학술논문
Monte Carlo simulation of the new time-of-flight powder diffractometer EXED at the Hahn-Meitner-Institut.
Document Type
Article
Author
Source
Subject
*MAGNETIC fields
*EXTREME environments
*X-ray diffractometers
*DIFFRACTION patterns
*ALUMINUM
*SURFACE coatings
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Language
ISSN
1023-8166
Abstract
The new diffractometer EXED at HMI designed for high resolution and extreme environments (like very high magnetic fields) has been simulated in detail using the software package VITESS. The simulation includes the beam extraction system, beam splitter, kink, chopper system, sample and detector. Many parameters like coatings, kink angle, etc. were varied to improve the instrument. The chopper system was checked and a focussing guide optimized. Finally, powder diffraction patterns of an aluminium sample show that a resolution of Δ d / d - 4 will be feasible at 176° detector angle. The data collection time is estimated on the basis of the simulation results for the flux at sample. [ABSTRACT FROM AUTHOR]