90 400/54 Premium Shielded NMR Magnet System Product Overview
6 Technical Specifications
Magnet specifications
Superconducting shim coils
Table 11 Magnet specifications
Magnet type Compensated self-screened
solenoid
Central field 9.4 Tesla (400 MHz
1
H)
Field stability Less than 0.02 ppm/hour drift
(8 Hz/hour
1
H)
Operating current 97.4 Amps (nominal)
Typical time to energise magnet to full
field
Less than 160 min.
Stored Energy 0.18 MJ
Fringe field (5-Gauss line)* 0.55 m radially and 1.0 m axially
*In the event of a quench, it is possible for the magnetic field to
momentarily bloom beyond this limit. For further details consult
the Safety Considerations for the Installation and Operation of
Magnet Systems document.
Table 12 Coil details
Shims provided Z0, Z1, Z2, Z3, X, Y, ZX, ZY, XY, X2-Y2
Coupling All shims are designed to be
decoupled from main coil
Orthogonality All shims are designed to be fully
orthogonal
'X' axis alignment Nominally coincident with line
through main necks
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