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8-ID Recent Activity

8-ID Recent Activity

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8-ID Recent Activity

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  1. 8-ID Recent Activity • 8-ID General • New resident post-doc • Martin Tolkiehn • Started 4/10/2006 • Sharing office with Xuefa Li • X-Ray Standing Waves and Wave-Guide experiments • Supporting some 8-ID-E and 8-ID-”G” experiments • Interesting experiments in recent weeks: • 8-ID-E • Super-solid He • Cr CDW XPCS

  2. 8-ID-E & G Recent and Upcoming Activities • Plan to replace E monochromator exit window and crystal holder during shutdown • Eliminate D-E air path • Allow eventual removal of 8-ID-A Be window • GISAXS vacuum-chamber-to-flight-path connections being modified to eliminate sample motion arising from bellows vacuum-loading • E set-up (Si(220)---microdiffraction) will be enhanced: • Channel-cut crystal to reduce harmonic contamination • Simple fluorescence set-up (to minimize use of 1-BM) • Microdiffraction and zone-plate-based XPCS

  3. 8-ID-I Recent and Upcoming Activities • Installation and initial testing of the new pseudo channel-cut monochromator for 8-ID-I has been completed • Team effort: Suresh (and Michael and Alec), deming Shu, Harold, AES-MOM, AES-MED, AES-SI and AES-BCDA • Some scary moments over the past few weeks: • Χ-motion yoke on 2nd crystal blocked line of sight to 1st crystal • Partial vent after installation at the end of the beamline---thought we had broken a Be window; tested Jeff Alicz’s new procedure for suspect Be contamination clean-up • Ge(111)-monochromatized beam was found only a few hours after first opening the shutter!!

  4. 8-ID-I Recent and Upcoming Activities • Piezo and picomotor fine pitch adjustment of Χ and θ of second crystal via flexure pivots • UHV linear-stage-driven rotation of 2-crystal (Ge(111) assembly • Ethernet and serial controls via EPICS 3.14