Dear Colleagues, We are pleased to announce a new mini-beam capability at the two GM/CA-CAT undulator beamlines in Sector 23 of the APS. We have implemented an apparatus to produce a strong, stable X-ray mini-beam. The apparatus is rapidly interchangeable with our standard beam. The flux and stability of the mini-beam have allowed successful data collection from macromolecule crystals of 5-10 micron size. We have tested the apparatus on several challenging projects with excellent results. Properties of the mini-beam are listed below. Size: user choice of 5 microns or 10 microns Flux: 1-2x10^13 photons/sec Flux stability: < 1% RMS over one minute; < 3% drift over 12 hours
Beam time applications for the 5-10 micron mini-beam on GM/CA beamlines 23-ID-B and 23-ID-D can be made through the APS proposal system at http://www.aps.anl.gov/Users/Become_A_User/Getting_Started/index.html or by contacting Sheila Trznadel at strzna...@anl.gov or +1-630-252-0662. GM/CA-CAT staff Ruslan Sanishvili (Nukri), Ph.D. GM/CA-CAT, Bld. 436, D007 Biosciences Division, ANL 9700 S. Cass Ave. Argonne, IL 60439 Tel: (630)252-0665 Fax: (630)252-0667 rsanishv...@anl.gov
