The SGRAD 305/210/HD/S is a fully self shielded gradient system designed to suit ≥310mm room temperature bore superconducting magnets and gradient systems. The design incorporates fully optimised X, Y and Z coil configurations. The X and Y coils are made from the highest quality copper plates machined with CNC technology. The Z coil is wound from heavy duty copper wire.
This document provides technical specifications for the SGRAD 305/210/HD/S, a fully self-shielded gradient system designed for 310mm room temperature bore superconducting magnets. The system features optimized X, Y, and Z coil configurations made from high-quality copper plates and heavy-duty copper strip, fully vacuum impregnated to minimize vibration and noise. It includes a room temperature shim set designed to minimize coupling between gradients and shims during pulsing.
| Total length | 305mm |
|---|---|
| External diameter | 210mm +0.5mm |
| X/Y/Z axis Strength | 1.0mT/m/A +5% |
| Residual eddy currents | <0.5% |
| X axis Inductance | 430uH +15% |
| Y axis Inductance | 450nH +15% |
| Z axis Inductance | 400HH +15% |
| X axis DC Resistance | 250mQ +25mQ |
| Y axis DC Resistance | 270mQ +25mQ |
| Z axis DC Resistance | 280mQ +25mQ |
| Peak voltage | <300V |
| Peak current | 300A |
| RMS current (all axes) | <70A RMS indefinitely |
| RMS current (Y axis only) | <120A RMS indefinitely |
| Peak internal temperature | <60°C |
| Peak strength | 300mT/m |
| Rise-time X | 573s |
| Rise-time Y | 616us |
| Rise-time Z | 556us |
| Orthogonality X to Y | 90°+/-1° |
| Insulation resistance | > 200 MQ at 1000 Volts DC |
The total length is 305mm.
The peak current is 300A.
The typical volumetric flow rate is 5.6 litres/min.