A versatile double-axis multicounter neutron powder diffractometer
- 1. Paul Scherrer Inst., Villigen (Switzerland). Condensed Matter Research and Materials Sciences
- 2. Eidgenoessische Technische Hochschule, Zurich (Switzerland). Lab. for Neutron Scattering
Description
The double-axis multicounter diffractometer (DMC) installed at the 10-MW reactor SAPHIR (PSI) has been designed as a good-flux, good-resolution (presently Δd/d≥4x10-3) neutron powder diffractometer. The detector bank is based on a commercial position-sensitive linear BF3 detector which may be automatically and precisely positioned on air cushions (standard epoxy floor). Vertically variable focusing germanium or pyrolythic graphite monochromators are used. Special efforts were made to optimize the sample environment, e.g. by developing an oscillating radial collimator system. Although the monochromator shielding is not yet in a final state, the diffractometer is successfully operating since several years. Design properties and operational experience are discussed. Online data analysis based on LSI and VAX computers is facilitated by user-friendly software. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Instruments and Methods in Physics Research, Section A
- Journal Volume
- 288
- Journal Issue
- 2/3
- Series
- Nucl. Instrum. Methods Phys. Res., Sect. A.
- Journal Page Range
- 477-485
- ISSN
- 0168-9002
- CODEN
- NIMAE
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 21050834
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- BEAM TRANSPORT; BF3 COUNTERS; CALIBRATION; COLLIMATORS; COMPUTER CODES; CONTROL SYSTEMS; DATA PROCESSING; DEBYE-SCHERRER METHOD; DEC COMPUTERS; GERMANIUM; HODOSCOPES; MODERATORS; MONOCHROMATORS; NEUTRON BEAMS; NEUTRON DETECTION; NEUTRON DIFFRACTION; NEUTRON DIFFRACTOMETERS; ON-LINE MEASUREMENT SYSTEMS; OPTIMIZATION; OSCILLATIONS; POSITION SENSITIVE DETECTORS; PYROLYTIC CARBON; REMOTE CONTROL; SAPHIR REACTOR; SPATIAL RESOLUTION
- Descriptors DEC
- BEAMS; CARBON; COHERENT SCATTERING; COMPUTERS; CONTROL; DETECTION; DIFFRACTION; DIFFRACTION METHODS; DIFFRACTOMETERS; ELEMENTS; ENRICHED URANIUM REACTORS; MEASURING INSTRUMENTS; METALS; NEUTRON DETECTORS; NONMETALS; NUCLEON BEAMS; ON-LINE SYSTEMS; PARTICLE BEAMS; POOL TYPE REACTORS; PROPORTIONAL COUNTERS; RADIATION DETECTION; RADIATION DETECTORS; REACTORS; RESOLUTION; SCATTERING; THERMAL REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS