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900 MHz, Ultra-Wide Bore 105 mm NMR Magnet

Intro

Our ultra-wide bore 900 MHz NMR magnet (105 mm) was designed and built by the NHMFL's own Magnet Science and Technology department.  The magnet reached its full field of 21.1 Tesla on July 21, 2004, without incurring any training quenches.  Regular user operations started on August 1, 2005.  Since then, research proposals for the time on this instrument are accepted from interested scientists worldwide in all three areas of NMR: solid state, solution and imaging. 

An article on the magnet construction is available as a screen optimized (321 Kb) or print optimized (4.4 Mb) PDF files.

Applying for Instrument Time

We encourage potential users to apply for time on this 900 MHz instrument.  Research proposals for the instrument time should be submitted to Dr. R. Fu in accordance with the steps outlined here.  Experimental time is usually alloted prior to the start of each month.

Application Demos

  • TROSY spectra of M2 protein
  • Chemical shift correlated spectrum of a 15N-Acetyl-Valine crystal
  • Improved CPMAS resolution and homonuclear dipolar recoupling
  • 17O NMR spectroscopy of gramicidin and peptides using 900 MHz BB probe
  • Fixed mouse brain images from the 900 MHz scanner
  • First in-vivo mouse brain images from the 900 MHz scanner
  • High resolution PRESS localized spectroscopy using MRI

    Specs

  • Designation: Solid State NMR, Solution NMR, and Imaging
  • Location: Tallahassee
  • Field: 21.1 Tesla
  • Bore size: 105 mm
  • Distance to COF from RT shims flange: 1542 mm
  • Magnet Drift 525 Hz/hr, stabilized by current injection
  • Residual drift after stabilization is less than 10 Hz/hr
  • Outer (89 mm ID) RT shims by Resonance Research
  • Inner 26-channel Bruker RT shims for solution applications
  • 4-channel Bruker Avance 900 MHz console
  • Built-in VT controller by Bruker
  • 1000/300 W 6-365 MHz linear amplifier
  • 1000/150 W 700-900 MHz linear amplifier
  • Two 500 W 6-365 MHz linear amplifiers

    Commercial Probes

  • Bruker 3.2 mm 1H—13C—15N CPMAS probe, VT
  • Bruker micro2.5 MRI probe with 2.5, 5, 10, and 30 mm 1H coils
  • Bruker 5 mm 1H{13C,15N} solution probe with 3-axis gradients, VT

    NHMFL probes developed in-house

  • 3.2mm MAS 1H—X transmission line probe, expanded temperature range
  • Low-E 1H—X static probe for biological solids, flat and bicelle sample coils, biological VT
  • 1H—X transmission line probe, interchangeable static coils, biological VT

    Full Time Schedule [Older schedule]

    DatesRequested byExperiment Title
    05/31/09 - 06/02/09 Grant, Samuel T1, T2 and T2* measurements of labeled Bv2 cells: Fe vs Dy
    06/03/09 - 06/05/09 Blue, Ashley 900 Console Upgrade
    06/06/09 - 06/15/09 Sharma, Mukesh Structural Studies of M2 Protein
    06/16/09 - 06/21/09 Grant, Samuel Pre-treatment imaging of a hamster model of Atherosclerosis
    06/22/09 - 06/24/09 Null, Brian Drosophila MRI/S
    06/25/09 - 06/30/09 Schepkin, Victor MRI of rodent traumatic brain injury
    07/01/09 Schepkin, Victor Initial tumor response to chemotherapy
    07/02/09 Grant, Samuel Gradient calibration and FASTMAP setup
    07/03/09 Grant, Samuel Knee joint imaging
    07/04/09 - 07/05/09 Grant, Samuel T1, T2 and T2* measurements of labeled Bv2 cells: Fe vs Dy
    07/06/09 - 07/13/09 Sharma, Mukesh Structural Studies of M2 Protein
    07/14/09 - 07/16/09 Grant, Samuel Baseline Finch imaging
    07/17/09 - 07/22/09 Schepkin, Victor Initial tumor response to chemotherapy
    07/23/09 Grant, Samuel Knee joint imaging
    07/24/09 Grant, Samuel 23Na imaging: purified solution
    07/25/09 - 07/30/09 Hamaed, Hiyam 35Cl static and MAS NMR experiments of hydrochloride pharmac...
    07/31/09 Grant, Samuel T1, T2 and T2* measurements of labeled Bv2 cells: Fe vs Dy
     08/01/09 -Available-