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| Message from Maintenance |
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Equipment Status, 11-6-09: Do not use 2.5 minute exposure times for data collections, since the data collection may stop as soon as 15 minutes, but probably within 6 hours, due to a probable software problem that Rigaku is investigating. 5 minutes was tested for only a couple days, and was o.k. "Typical" exposure time (10 minutes) data collections stop prematurely perhaps 10 to 20% of the time. Just restart the data collection. Moe and curly have new/better mirrors, detectors, and inverted phi axes. If you will need a long crystal to detector distance (about 300+ mm.), moe would be the preferable unit to use, since its beam diverges less. In order to determine the approximate X-ray filament lifetime on moe, which has a new cathode, I will let the machine run until the filament breaks. The estimated time the moe filament will break is after March 1. |
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