EXPERIMENTAL STATION OF EXAFS SYNCHROTRON BEAM LINE

摘要

Centre for Design & Manufacture (CDM) has designed and developed 19-axes, PC-operated, experimental station of Extended X-ray Absorption Fine Structure (EXAFS) Synchrotron beam line as per the optical and physics parameters specified by the Spectroscopy Division of BARC. This PC - operated experimental station, will be used for conducting various types of experiments (like measurements of fine structure, interatomic distances, degree of disorder, radial distribution etc), using the high energy X-ray beam, taken from the Synchrotron beam. Complete experimental station, consists of 19-axes high precision motorized instruments/stages, all manufactured at CDM, mounted on three vertical axes. First axis is fixed axis and consists of a vacuum chamber containing a 460 mm long Si single crystal, bent in elliptical shape with the help of a crystal bender. This chamber is mounted on X-Y-Z and Rotary table for alignment of the bent crystal with respect to the synchrotron beam. Cooling arrangement for Si crystal inside the vacuum chamber has also been provided. Purpose of this bent crystal, is to focus the X-ray beam of the selectable energy from 5Kev to 20Kev, on the sample axis. First axis also consists of radial drive and rotational drive arrangement, for the Second and Third axes.