A SUBMICRON SYNCHROTRON X-RAY-BEAM GENERATED BY CAPILLARY OPTICS

A novel capillary optics technique for focusing synchrotron X-ray beams has been applied in an experiment performed at the DORIS storage ring at HASYLAB. This new technique, which utilizes the total reflection properties of X-rays inside small capillaries, has recently been applied to generate microbeams of X-rays, with a beam size down to about 10-mu-m using conventional X-ray tubes. The result from our recent experiment shows that capillary optics can also bc used to generate a submicron beam of X-rays from a synchrotron light source. A description of the capillary unit, and the alignment procedure is given. The influence of the thermal load on the device caused by the intense flux of synchrotron radiation will be discussed. Future perspectives of the capillary technique as applied to synchrotron radiation will be discussed.