UW CHEMISTRY NMR
Announcments & Equipment Logs
Usage
AV800 : REMINDER – WALK ON TIME NEXT WEEK
Please contact me by before the end of the day tomorrow i.e. Friday, 2nd Nov., to avail the remaining time during the Walk-On period in the 800 MHz spectrometer.
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AV500 UPDATE : BF1 SHIFT COMPLETE
The Base Frequency of the spectrometer is now reset to : 499.956572 MHz. Getting the line shape close to factory spec is still a work in progress. But, the current resolution achieved is comparable to the values with which we were operating prior to the frequency shift. Existing user created parameter sets and the Bruker […]
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AV500 : PLANNED PROBE CHANGE and B0 FIELD CHANGE
The X{1H} -Z grad BBO probe will be tested and installed on 26th Oct’12, Friday. The probe optimization will be performed over the weekend and the probe should be ready for use by Monday, the 28th of Oct ’12. Along with this operation, the B0 field will be readjusted to re-position the LOCK field to […]
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AV800 : CRYOPROBE WALK-ON TIME AVAILABLE
Users who want to utilize the 800 MHz cryoprobe facility during the walk-on period next week between 22nd and 24th should contact the facility manager with your specific needs by the end of today, 19th Oct ’12. The slots will be filled on a first-come-first-serve basis.
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AV500 : automation scripts not working
Familiar automation scripts such as ‘xaua’ are not functioning as expected. This is being looked into. Please use workarounds that are viable. For instance, ‘xaua’ can be replaced with ‘rga’ followed by ‘zg’. Please contact facility staff for assistance with this.
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AV300, AV500: PRINTING OK
The long standing problem of not able to print spectra from either the Topspin window or with the xwinPlot, plot editor program is now resolved. For routine use, you can use Ctrl-P to print whatever is displayed in a active Topspin window to the printer, without the necessity of starting the plot editor.
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DRX499 : VT SYSTEM UPDATE : PLEASE READ
Similar to the temperature limit test that was conducted on AV500, we completed a test to determine the maximum allowable sample temperature that is safe within the operational constraints of the DRX499 spectrometer. We have determined that +70 C will be the absolute maximum sample temperature that is sustainable without causing serious concerns, for an […]
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IMPORTANT – PLEASE READ : AV500 VT UPDATE
We had several requests to explore increasing the high temperature limit on the instrument. This needed rather careful testing, without which we could precipitate a catastrophic quench of the magnet. On the AV500 system, such a test was completed recently. We have concluded that, for experiments that need to run for more than a few […]
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Imminent compressed air disruption next week
Physical Plant will turn off compressed air supply to the NMR facility, tentatively by middle of next week. This will prevent normal use of instruments. We expect this disruption to last for about an hour. Exact date and time of the event and the planned shut down of the instruments during such time will be […]
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