Unity 500
The first picture shows the Oxford magnet, which has rubber donuts to provide
vibration damping. Also visible is the black hose from the AirJet sample
cooler.
The second picture shows the magnet leg/preamps, the AirJet cooler
unit, and the system console.
The third picture shows the host computer system.
The AirJet cooler provides mechanical cooling of the incoming gas stream to as low as -85 degrees C to permit long term sample cooling without user intervention. This permits observation of biological sample at regulated temperatures near or slightly below room temperature for several days.
The console is equipped with three broadband RF channels, each covering the full frequency range of 500 MHz down to 10 MHz, and each equipped with a waveform generator. The waveform generators allow a shaped pulse or custom decoupler modulation scheme on all three channels. All three channels are also equipped with linear amplifiers, permitting peak pulse power to be varied over 63 db range. There is also a 30 G/cm Pulsed Field Gradient amplifier installed in this console.
The system is equipped with four different probes. The probe used most often is H1{C13/N15} triple resonance probe. This is a proton observation probe with both Carbon and Nitrogen decoupling coils and a Z-axis PFG coil.
The second probe is a 5 mm broadband probe, covering the 50-202 MHz frequency band (N-15 through P-31). This probe does not include a PFG coil.
The third probe is a dedicated Carbon observe probe with a 3mm insert, designed to provide better sensitivity on samples where there is very little material available. Sample volume is approximately 300 uL. This probe also has a PFG coil.
The fourth probe is a Nalorac HF probe that will do both H{F} adn F{H} experiments.
The host computer is a Sun Ultra Sparc 5 with 128 Meg of memory and a 1.3G disk for system usage. See the workstation disk detail for a description of how disk space is managed on all the Unix systems. A LaserJet IIP is used for local printing and plotting.