NMR Superconducting Magnet Specifications

NMR Superconducting Magnet Specifications
Superconducting magnet
technologies for NMR
Supplying over 55% of the world’s needs,
Oxford Instruments are the indisputable
leaders in high field, superconducting
magnet technologies.
Over 5,000 of these systems are now
enabling the highest quality high-resolution
NMR experiments to take place in
laboratories the world over.
Our NMR magnet specifications, provide
magnetic fields with excellent drift
characteristics and extremely low
helium consumption. VectorShield TM
- passive shielding solution
for fields above 800 MHz
Specifications for Standard, Vertical Bore and High Resolution NMR Magnet Systems
NMR Operating Frequency 900 800 700 600
(MHz 1H)
Field Strength (Tesla) 21.1 18.8 16.4 14.1
Cryostat Room Temperature 54 54 63 54 51 89
Bore Access (mm)
Bore Access Inside Room 45 45 51 45 40 73
Temperature Shims (mm)
Magnet Operating 2.2 2.2 4.2 4.2 4.2
Temperature (K)
ActiveShield - - ✓ ✓ -
Field Stability (Hz/hour 1H) ≤10 ≤10 ≤10 ≤10 ≤12
Standard VectorShield TM Standard VectorShield TM
Vertical 5 Gauss Stray 10500 5200* 7500 3300* 3500 2500 5000
Field Contour (mm)
Horizontal 5 Gauss Stray 8300 4100* 6000 2200* 2500 1750 3950
Field Contour (mm)
Cryostat Type T9 T7 T8 T5FB T5FB
Helium Refill Interval (Days) ≥60* ≥56 ≥95 ≥120 ≥71
Cryostat Helium Refill 576 331 345 101 60
Volume (Litres)
Minimum Nitrogen Refill ≥14 ≥14 ≥14 ≥15 ≥15
Interval (Days)
Nitrogen Refill Volume (Litres) 405 167 162 136 136
Minimum Operational 5100 4128 3873 3190 3190
Ceiling Height (mm)
System Weight Including 9900 3520 3200 1081 1081
Cryogens (kg)
* approximate specification
Creating environments for analytical instruments
Specification Sheet
Sc
900 MHz NMR Superconducting
magnet system

Specifications for Standard, Vertical Bore, High Resolution NMR Magnet Systems
NMR Operating Frequency 500 400 300 200
(MHz 1H)
Field Strength (Tesla) 11.7 9.4 7.0 4.7
Cryostat Room Temperature 51 89 54 89 54 89 150 54 89
Bore Access (mm)
Bore Access Inside Room 40 73 45 73 45 73 120 45 73
Temperature Shims (mm)
ActiveShield ✓ ✓ ✓ ✓ - - - - -
Field Stability (Hz/hour 1H) ≤10 ≤10 ≤8 ≤10 ≤3 ≤3 ≤15 ≤2 ≤2
Vertical 5 Gauss Stray 1800 2500 1500 1800 2140 2750 4200 1811 2650
Field Contour (mm)
Radial 5 Gauss Stray 1300 1750 1000 1150 1680 2200 3300 1422 2000
Field Contour (mm)
Cryostat Type T4FB T5FB T3 T3 Compact T3 T3 T5 Compact T3 T3
Minimum Helium Refill ≥150 ≥140 ≥183 ≥183 ≥80 ≥234 ≥203 ≥120 ≥80 ≥234 ≥203
Interval (Days)
Long Hold Cryostat Minimum ≥365 - ≥336 - - ≥365 ≥365 - - ≥365 -
Minimum Helium Refill 83 135 52 61.5 26 78 68 101 26 78 68
Volume (Litres)
Minimum Nitrogen Refill ≥15 ≥14 ≥14 ≥14 ≥14 ≥14 ≥14 ≥22 ≥14 ≥14 ≥14
Interval (Days)
Minimum Nitrogen Refill 81 136 68 68 32 68 68 135 32 68 68
Volume (Litres)
Minimum Operational Ceiling 3104 3190 2928 2928 2690 2928 2928 4671 2690 2928 2928
Height (mm)
System Weight Including 625 1014 450 480 133 325 399 1050 120 315 391
Cryogens (kg)
Room Temperature Shims
Shim Number Of Compatible With Outer Internal Typical, Maximum
Type Channels Magnet Type Diameter Diameter Shim Heating
(Model) Axial Radial (NMR Frequency, MHz/Bore Diameter, mm) (mm) (mm) (Watts)
23/54/45 7 16 200/54, 300/54, 400/54 54 45 4
28/51/40 8 20 500/51, 600/51 51 40 4
40/51/40 8 32 500/51, 600/51 51 40 4
40/54/45 8 32 700/54, 900/54, 800/54 54 45 8
35/63/51 7 28 800/63 63 51 6
18/89/73 6 12 200/89, 300/89, 400/89, 500/89, 600/89 89 73 10
26/89/73 6 20 200/89, 300/89, 400/89, 500/89, 600/89 89 73 10
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© Oxford Instruments Superconductivity Limited, 2003. All rights reserved.
Reference No: HCC OI637/0303. Issue C. February 2003
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Creating environments for analytical instruments Specification Sheet