Bruker Avance II 700

The 700 MHz spectrometer was installed in June of 2006. It has a Bruker Instruments Avance II console equipped with 4 RF channels and field gradients. The system is capable of performing most of the multinuclear, multidimensional experiments required for modern solution-state NMR.

Technical information

Magnet

  • Bruker 16.45 T, 54 mm bore Ultrashield
  • Refill of cryogens: He > 125 days, N2 > 21 days

Probes

  • Bruker Z-gradient inverse TXI 1H/13C/15N 5mm cryoprobe
  • Bruker Z-gradient inverse TBI 1H/13C/BB 5mm conventional probe
  • Bruker HXY 3.2mm MAS probe (to be installed October, 2006)

Shims

  • BOSS II digital 34 shim set, triple axis gradient auto-shimming available

Lock

  • Digital lock system
  • 2H TX board for deuterium decoupling and  2H gradient shimming.

 

RF

  • 4 x SGU, one for each RF channel

Transmitters

  • 3 RF channels each with linear amplifiers plus dedicated 2H channel
  • BLAH300 300 Watt 1H/19F linear amplifier
  • BLA2X500: two 500 Watt X nucleus amplifiers

Gradients

  • GREAT 3 x 10 A amplifier, 60 Gauss/cm max.

ADC

  • 16 bits, 2 x 20 MHz sample rate, 5 MHz SW
  • Real-time digital filtering and digital quadrature detection

Temperature Control

  • BVT3000 digital VT controller
  • BCU-X pre-cooling unit
  • Liquid N2 evaporator

Solids Accessory

  • MAS II controller

Computer

  • Windows PC running Bruker Topspin 1.3
  • Dedicated Printer HP LaserJet6MP, plus network printers.

 

 

Bruker Avance DRX500

The 500 MHz spectrometer has been upgraded with a Bruker Instruments Avance DRX console equipped with 4 RF channels and triple axis field gradients. The system is capable of performing most of the multinuclear, multidimensional experiments required for modern solution-state NMR. In addition, the gradient accessory may be used to perform diffusion and microimaging experiments.

Technical information

Magnet

  • Oxford 11.75 T, 51 mm bore
  • Refill of cryogens: He > 125 days, N2 > 15 days

Probes

  • Bruker XYZ-gradient inverse TXI 1H/13C/15N 5mm
  • Nalorac Z-gradient BBO (15N-31P observe, 1H decouple) 5mm

Shims

  • BOSS II digital 28 shim set, gradient auto-shimming available

Lock

  • Daedalus digital lock system
  • 2H Lockswitch for deuterium decoupling experiments

Transmitters

  • 4 RF channels each with linear amplifiers
  • BLAXH50: 1H(500-600MHz)/50W and BB(6-242 MHz)/300W
  • 2 x BLAX300RS: BB(6-242 MHz)/300W

Synthesizers

  • 2 x DUAL PTS 620

Preamplifier

  • Multilink: 1H, 19F, 2H, BB

Acquisition controller

  • SCI: RISC-CPU 16 MB, Fast Ethernet
  • TCU: 12.5 ns timing resolution
  • 4 x FCU: 0.05 phase res., 0.001 Hz freq. res., 64 kWord wave form memory
  • RCU: 18 bit dynamic, Intel i960
  • ATR with 22 MHz IF
  • Digital routers

Gradients

  • Acustar 3 x 10 A, 60 Gauss/cm max.

ADC