This is a technical specification document, mainly introducing the basic information of MRBR 7.0/210/ASZ system, including superconducting magnet, superconducting magnet system components and standard components
This document provides preliminary specifications for the MRBR 7.0/210/ASZ system, a complete superconducting magnet system intended for research studies on biological applications of NMR imaging and spectroscopy. The system features a 7.0 Tesla actively shielded superconducting magnet housed in a horizontal room temperature bore cryostat.
| Field stability | Less than 0.05 ppm/hour |
|---|---|
| Operating current | 300 Amps (nominal) |
| Field homogeneity (superconducting only) | Less than + 4ppm over 8 cm dsv |
| Field homogeneity (fully shimmed) | Less than + 2ppm over 8 cm dsv |
| Time to energise | 180 mins |
| Cryostat length | > 1280mm |
| Cryostat weight | 2900kg (approx.) |
| Cryocooler type | 4.2K two stage pulse tube |
| Input Power | 9kW maximum |
The system is primarily used for research studies on the biological applications of NMR imaging (MRI) and NMR spectroscopy (MRS).
The system features a horizontal room temperature bore with a diameter of 210mm.
The maximum recommended current for the shim coils is 25 Amps.