Superconducting Magnet & Cryostat Assembly
A niobium-titanium solenoid carrying a persistent current sits in a bath of liquid helium inside a nested dewar, surrounded by a liquid-nitrogen jacket and vacuum spaces; shim coils trim the field to part-per-billion homogeneity. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
9 top-level lines · 18 rows shown · 141 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Superconducting Main Coil 3 parts | nmr-superconducting-coil | 1× | 1 | 3 | assembly |
| 1.1 | NbTi Superconducting Wire | nmr-nbti-wire | 1× | 1 | — | part |
| 1.2 | Coil Former | nmr-coil-former | 1× | 1 | — | part |
| 1.3 | Copper Winding | copper-winding | 1× | 1 | — | part |
| 2 | Liquid-Helium Dewar | nmr-helium-dewar | 1× | 1 | — | part |
| 3 | Liquid-Nitrogen Dewar | nmr-nitrogen-dewar | 1× | 1 | — | part |
| 4 | Vacuum Insulation Jacket | nmr-vacuum-jacket | 1× | 1 | — | part |
| 5 | Shim Coil Set 2 parts | nmr-shim-coil-set | 1× | 1 | 130 | assembly |
| 5.1 | Shim Coil | nmr-shim-coil | 18× | 18 | — | part |
| 5.2 | Shim Power Supply 4 parts | nmr-shim-power-supply | 1× | 1 | 112 | assembly |
| 5.2.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 5.2.2 | Microcontroller | mcu | 1× | 1 | — | part |
| 5.2.3 | SMD Passive (R/C/L) | smd-passives | 90× | 90 | — | part |
| 5.2.4 | Connector | connector | 20× | 20 | — | part |
| 6 | Persistent Current Switch | nmr-persistent-switch | 1× | 1 | — | part |
| 7 | Quench Relief Valve | nmr-quench-valve | 1× | 1 | — | part |
| 8 | Cryostat Outer Vessel | nmr-cryostat-vessel | 1× | 1 | — | part |
| 9 | Pressure Sensor | pressure-sensor | 2× | 2 | — | part |
Used in 1 assembly
Sourcing — likely vendors
Companies that make this · indicative price $0.10–$20 · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| 🇨🇳JL MAG jlmag.com.cn ↗ | Ganzhou, CN | Rare-earth magnets | 5,000 pcs | 6–10 wks |
| zhmag.com ↗ | Yantai, CN | NdFeB magnets | 5,000 pcs | 6–10 wks |
| china-ys.com ↗ | Ningbo, CN | NdFeB magnets | 5,000 pcs | 6–10 wks |
| sanhuanmagnetics.com ↗ | Beijing, CN | Rare-earth magnets | 5,000 pcs | 6–10 wks |
| earth-panda.com ↗ | Hefei, CN | NdFeB magnets | 5,000 pcs | 6–10 wks |