104/25/06 TRR Update

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

204/25/06 TRR Update

304/25/06 TRR Update

– 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

8-ID-E & G Recent and Upcoming Activities

404/25/06 TRR Update

– 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!!

8-ID-I Recent and Upcoming Activities

504/25/06 TRR Update

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