Superconducting vector magnet Three-dimensional Superconducting Magnet

Overview

The Three-dimensional Superconducting Magnet is a 3D vector superconducting magnet system that enables continuous rotation of the magnetic field in any direction. The system can be configured without liquid-helium conduction cooling and supports selectable GM or pulse-tube refrigeration. Room-temperature optical channels can be provided in horizontal or vertical orientation. The system is configurable to meet application requirements.

Features

• Magnetic field direction rotates freely in three dimensions.
• Selectable horizontal and vertical room-temperature optical channels.
• Continuous current mode operation available.
• Fast field scanning capability (<50 min); optional higher scanning speeds available.
• High magnetic field uniformity (Z direction) and magnetic field stability.
• No liquid-helium conduction cooling required; GM refrigerator or pulse-tube refrigerator selectable.
• Configurable to customer application requirements.

Standard configurations (examples)

• 1T / 1T / 1T — Room temperature aperture: 180 mm; Field uniformity (design): Z ±0.1% or ≤10 ppm; X, Y ±0.5%; 1.8 W GM refrigerator (no liquid-helium conduction cooling).
• 4T / 1T / 1T — Room temperature aperture: 100 mm; Magnetic field uniformity (design): Z ±0.1%; X, Y ±0.5%; 1.8 W GM refrigerator (no liquid-helium conduction cooling).
• 6T / 1T / 1T — Room temperature aperture: 150 mm; Field uniformity (design): Z ±0.1%; X, Y ±0.5%; 1.5 W split pulse-tube refrigerator (no liquid-helium conduction cooling).
• 0.6T / 0.6T / 0.6T (microscopic optical model) — Room temperature aperture: 70 mm; Field strength (any direction): 0.6 T; Field uniformity: Z ±0.5%; X, Y ±1%; 1.8 W GM refrigerator; Magnet height: 210 mm.
• Other variants in development: 6T/2T/2T; 7T/2T/2T; 9T/2T/2T.

Technical specifications

• 3D vector operation: full rotation of magnetic field direction in three dimensions.
• Optical access: selectable horizontal or vertical room-temperature channels.
• Operational modes: continuous current mode; fast field scanning (<50 min) with options for faster scanning.
• Cooling options: GM refrigerator or pulse-tube refrigerator; designs do not require liquid-helium conduction cooling.
• Magnetic field uniformity (model-dependent): typically Z ±0.1% (some designs ≤10 ppm), X/Y typically ±0.5%; 0.6T model: Z ±0.5%, X/Y ±1%.
• Typical refrigerator cooling capacities noted in designs: 1.8 W (GM) and 1.5 W (split pulse tube).
• Room-temperature aperture examples by model: 70 mm, 100 mm, 150 mm, 180 mm.

Customization

• System configurations, field ranges and apertures can be tailored to specific application and integration requirements.