Abstract
A new diffractometer that is optimized for the analysis of residual stresses (ARES) is currently under construction at the Geesthacht Neutron Facilities (GeNF). ARES is located at a thermal neutron guide with a characteristic wavelength of 0.1 nm. It will at first be equipped with a double focussing Si (3 1 1) monochromator with a fixed vertical and a variable horizontal bending (Wagner et al., Nucl. Instr. & Meth. A 338 (1993) 53). Samples up to 200 kg can be positioned. A 3 He area detector will be used that was developed at GeNF. It has an active area of 300×300 mm 2 and a resolution of about 2 mm. ARES will be put into operation in summer 1999. It will be used in the frame of the GKSS R&D program and will also be open for the national and international user community. Proposals can be sent to GeNF at any time. Travel support is available for national users.
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