The upgraded cold neutron triple-axis spectrometer FLEXX - enhanced capabilities by new instrumental options

Klaus Habicht, Diana Lucía Quintero-Castro, Rasmus Toft-Petersen, Mathias Kure, Lucas Maede, Felix Groitl, Manh Duc Le

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Abstract

The upgrade of the cold neutron triple axis spectrometer FLEXX, a work-horse instrument for inelastic neutron scattering matching the sample environment capabilities at Helmholtz-Zentrum Berlin, has been successfully accomplished. Experiments confirmed an order of magnitude gain in flux now allowing for intensity demanding options to be fully exploited at FLEXX. In this article, we describe the layout and design of two newly available FLEXX instrument options in detail. The new Heusler analyzer gives an increase of the detected polarized neutron flux due to its superior focusing properties, significantly improving the feasibility of future polarized and neutron resonance spin echo experiments. The MultiFLEXX option provides simultaneous access to large regions in wavevector and energy space for inelastic excitations thus adding mapping capabilities to the spectrometer.
Original languageEnglish
Article number03007
JournalE P J Web of Conferences
Volume83
Number of pages5
ISSN2100-014X
DOIs
Publication statusPublished - 2015
Externally publishedYes

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