Technical assistance from ILL would be limited to sharing the technician presently employed on the neighbouring D10. Already several external laboratories have expressed interest in such an arrangement. This proposal satisfies current ILL policy of developing new projects with active participation from outside users, and has many of the advantages of the CRG system while keeping a large part of the instrument time available to the general community. Journal of Neutron Research. Transmission belt to drive drum.
Motor is under table.
Mirrors for bringing the laser light to the reader head. The sample crystal is mounted on a goniometer head on the cylinder axis, and can be rotated around this axis. The neutron beam, which enters and leaves via opposed holes in the cylinder, produces Bragg reflections and other, more general scattering patterns, which pass through the aluminium wall and are recorded on the image plates mounted on the outside cylinder surface. The detector, which has a radius of 159.2 mm and a length of 400 mm is read off in a phonographic mode with the reading head tracking slowly horizontally while the cylinder rotates at high speed. The readout time is four minutes, giving an image of the pattern recorded on the plates comprising 4000 x 2000 square pixels 200 m m on edge.