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Schematic to-scale drawing of LH700; H100 is to be installed in the cold bore of L600. All dimensions are in millimeters.
Axial distance vs frequency difference plots for the LH700 at ; open circles: measured data; solid line: calculated based on an analytical model; dashed line: calculated with the RT shim alone activated; dotted line: calculated with ferroshimming set alone in effect.
Normalized NMR signal vs frequency difference plots; solid line: measured; dashed line: with the RT shim coils alone activated; dotted line: with the ferroshim set alone in effect.
Measured field gradients up to the fourth order: (1) L600 at ; (2) LH700 at ; (3) calculated LH700 map after a ferroshim set applied on the LH700 map (without RT-shim).
Parameters of , , and RT shim coils; : radius of loop or arc ( and ); : axial location of loop ; and : axial locations of one set of four saddles ( and ). (Units: Hz/cm for and ; for .)
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