Evaluation of HOPG mounting possibilities for multiplexing spectrometers

Felix Groitl, Marek Bartkowiak, Ryan M. Bergmann, Jonas Okkels Birk, Marton Marko, Alex Bollhalder, Dieter Graf, Christof Niedermayer, Christian Rueegg, Henrik Moodysson Rønnow

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Four different methods for mounting HOPG analyzer crystals on Si holders have been evaluated in the design process of the new multiplexing spectrometer CAMEA. Contrary to neutron optics used in standard spectrometers, the new instrument concept employs a series of analyzer segments behind each other where the neutrons have to pass through the bonding compound of the different analyzer crystals. The different methods, namely screws, shellac, indium soldering and clips, have been evaluated with regards to background, transmission, cooling, activation and handling. The results presented here will give valuable input for future CAMEA-type spectrometers currently planned and designed at various neutron sources.
Original languageEnglish
JournalNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume858
Pages (from-to)30-35
Number of pages6
ISSN0168-9002
DOIs
Publication statusPublished - 2017

Keywords

  • Neutrons
  • Neutron optics
  • Neutron scattering
  • Multiplexing
  • HOPG
  • Neutron spectrometer

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