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Details of Grant 

EPSRC Reference: GR/K58203/01
Title: GEM - GENERAL MATERIALS DIFFRACTOMETER FOR ISIS: A COLLABORATING RESEARCH GROUP PROPOSAL
Principal Investigator: Day, Professor P
Other Investigators:
Enderby, Professor Sir J
Researcher Co-Investigators:
Project Partners:
Department: Davy Faraday Research Laboratory
Organisation: Royal Institution of Great Britain
Scheme: Standard Research (Pre-FEC)
Starts: 02 October 1995 Ends: 01 October 1999 Value (£): 2,569,285
EPSRC Research Topic Classifications:
Instrumentation Eng. & Dev.
EPSRC Industrial Sector Classifications:
Manufacturing
Related Grants:
Panel History:  
Summary on Grant Application Form
Neutron diffraction is one of the most versatile tools for determining structures of microcrystalline powders, glasses and amorphous materials of wide importance in materials science, physics and chemistry. Existing neutron diffractometers at ILL and ISIS either have high-Q resolution with good background, but long data collection time, or high countrate and a relatively low resolution. We propose to design and build a time-of-flight diffractometer that will combine high resolution over a wide Q range with the high countrate needed for varying sample conditions such as temperature, pressure and chemical reaction. Time-of-flight diffraction gives access to a very wide range of d-spacings with constant resolution for all d (or Q). Fixed detector geometry also simplifies provision of specialised sample environments. The instrument will be installed on the beamline at ISIS currently occupied by the obsolescent first generation LAD diffractor. Special features are a large detector area, high degree of collimation of both incident and scattered beams, a novel design of adjustable primary collimation and high detector stability over a large solid angle as a result of advances in detector technology.
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Organisation Website: http://www.rigb.org