Advances in detectors for single crystal neutron diffraction

J. C. Buffet, J. F. Clergeau, R. G. Cooper, J. Darpentigny, A. De Laulany, C. Fermon, S. Fetal, F. Fraga, B. Guérard, R. Kampmann, A. Kastenmueller, G. J. Mc Intyre, G. Manzin, F. Meilleur, F. Millier, N. Rhodes, L. Rosta, E. Schooneveld, G. C. Smith, H. TakahashiP. Van Esch, T. L. Van Vuure, K. Zeitelhack

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Parallax error severely limits the use of gas detectors for neutron and X-ray single-crystal diffractometry. This is particularly the case in Neutron Macromolecule Crystallography (NMC), where a large solid angle is needed. High-resolution cylindrical detectors based on Neutron Image Plates provide a large angular coverage but they are gamma sensitive and do not allow time-resolved measurements. We describe the principle of a gas counter, the multi-blade Microstrip Gas Chamber (MSGC), which has the potential to design parallax-free cylindrical detectors. It contains radial MSGC plates, providing a partitioning of the gas volume and a segmentation of the signal readout. The axial coordinate is measured by reading out the charge signal on the anodes and the trans-axial coordinate is deduced from the electron drift distance measured optically using the time difference between the primary and the avalanche light. Expected characteristics are a sub-millimeter position resolution, a sub-microsecond time resolution, and a global counting rate greater than 107s-1.

Original languageEnglish
Pages (from-to)392-405
Number of pages14
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume554
Issue number1-3
DOIs
Publication statusPublished - Dec 1 2005

Keywords

  • Drift chamber
  • MSGC
  • Neutron diffraction
  • Scintillation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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    Buffet, J. C., Clergeau, J. F., Cooper, R. G., Darpentigny, J., De Laulany, A., Fermon, C., Fetal, S., Fraga, F., Guérard, B., Kampmann, R., Kastenmueller, A., Mc Intyre, G. J., Manzin, G., Meilleur, F., Millier, F., Rhodes, N., Rosta, L., Schooneveld, E., Smith, G. C., ... Zeitelhack, K. (2005). Advances in detectors for single crystal neutron diffraction. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 554(1-3), 392-405. https://doi.org/10.1016/j.nima.2005.08.018