Sample Scheduling Procedures
Project proposals from all users are assessed for scientific merit and technical feasibility through the same review process. NMRFAM utilizes iLab for reserving instrument time. Scheduling protocols prioritize projects with high scientific impact and are designed to maximize instrument usage and access for all users to cutting-edge NMR instrumentation. For spectrometers with multiple probes or shared between solution and solid-state NMR, configurations will be set and reviewed on a monthly basis. These decisions will be based on user demand for different configurations while minimizing down time for transition and striving to limit the wait from request to spectrometer time.
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More on Sample Scheduling Procedures
Spectrometer time is scheduled for the highest field and highest demand instruments first. Requests for high field NMR time must justify the need for high-field and demonstrate sample quality.
Within each spectrometer calendar, the schedule is set in the following order:
- Remote users traveling to NMRFAM to perform experiments so that travel plans can be accommodated. This is rare (a few times a year) due to the excellent remote data collection capabilities at NMRFAM.
- Service requests that were denied (despite scientific merit and feasibility) in the previous month simply due to a lack of available spectrometer time or incompatible configuration.
- Technology development projects that require coordinated scheduling of NMRFAM staff and spectrometer time, have confirmed need and justification for the specific spectrometer and experiment, and have demonstrated sample quality. No more than 50% of spectrometer usage, limited by staff capacity.
- The highest scientific priority and impact service projects for each individual instrument configuration. Experiments with long acquisition times that cannot be interrupted by maintenance scheduled first. Shorter experiments are filled in to the schedule to maximize spectrometer usage.
- Lower scientific priority service and collaboration projects are scheduled last.
Within tiers 4-5 (≈ 50% of spectrometer usage), every effort is made to accommodate time-sensitive requests due to unstable samples or data needed for grant proposals or publication revisions with short deadlines.
Solution State NMR Schedules and Capabilities
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Fleckvieh (Bruker Avance III HD, 900 MHz)
• 5 mm cryoprobe triple resonance probe (1H(13C/15N) (Default)
• 50:50 solution and solids beginning Mar. 2020
• Fleckvieh Schedule
Gelbvieh (Varian VNMRS DD, 800 MHz)
• 5 mm cold probe (1H(13C/15N) (Default)
• Gelbvieh Schedule
Telemark (Bruker Avance III HD, 750 MHz)
• 5 mm Cryoprobe TXI (1H/13C/15N) Z-axis gradient (Default)
• Telemark Schedule
Kurgan (Bruker Avance III HD, 600 MHz)
• 1.7 mm cryoprobe TXI (1H/13C/15N) (Default)
• Automatic sample changer (5×96 samples)
• Kurgan Schedule
Kerry (Bruker Avance III HD, 500 MHz)
• 5 mm cryoprobe TXO (13C(1H/15N) Z-axis gradient (Default)
• Automatic sample changer (5×96 samples)
• Kerry Schedule
Solid State NMR Schedules and Capabilities
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Fleckvieh (Bruker Avance III HD, 900 MHz)
• Phoenix 1.6 mm HFXY broadband tunable (default HCN optimized for H detection)
• Blackfox 1.6 mm HXY with HCN, HPC, or HC modes (optimized for C detection)
• Bruker 3.2 mm E-FREE HCN
• Bruker 1.3 mm HCN
• 50:50 solution and solids beginning Mar. 2020
• Fleckvieh Schedule
Ayrshire (Varian VNMRS 750 MHz wide bore)
• Quintuple resonance (five channel, HFXYZ) console
• Low noise high power preamplifiers
• Extended variable temperature range
• Varian 3.2 mm Balun HCN or HC
• Varian 3.2 mm BioMAS HCN or HC
• Varian 1.6 mm HXY broadband
• Varian 1.6 mm HFXY broadband
• Varian 1.6 mm HXYZ with HPCN, HCDN, HPCD, HPC, HCN, HCD modes
• Please inquire about your requirements for collaborative projects
• Aryshire Schedule
Vosges (Bruker Avance III HD 600 MHz)
• Phoenix 1.6 mm HFXY with solenoid coil (optimized for H detection)
• Phoenix 1.6 mm HXY with low E coil set optimized for HCN mode
• Phoenix 3.2 mm HXY
•Bruker 3.2 mm E-FREE HCN
•Bruker Static PISEMA probe
• Vosges Schedule
Ribeye (Varian VNMRS, 600 MHz)
• Varian 3.2 mm T3 HXY broadband (default HCN)
• Phoenix 1.6 mm HXY with low E coil optimized for HCN mode
• Ribeye Schedule
Taurus (Varian VNMRS 4 Channel, 600 MHz)
• Varian 1.6 mm T3 HXY broadband (default HCN)
• Phoenix 1.6 mm HFXY with solenoid coil
• Taurus Schedule