MuRoom® Magnetically Shielded Rooms (MSRs)
for Low-Frequency Magnetic Field Attenuation
Engineered for precision research
MuRoom® is a high-performance, modular or custom-built magnetically shielded room (MSR) engineered to reduce extremely low-frequency (ELF) magnetic fields.
Designed for sensitive environments in neuroscience, quantum computing, electron microscopy, and advanced research, MuRoom® delivers exceptional shielding performance with optional degaussing and active magnetic field cancellation.
Product Overview
The MuRoom® is a freestanding magnetic shielding enclosure constructed with MuMetal®, a high-permeability nickel alloy ideal for shielding low-frequency magnetic fields. Each unit is tailored for customer-specific requirements, including:
Internal working volume
Shielding factor and frequency range
Custom doors, cable entry, and equipment integration
Optional RF shielding
MuRoom® systems are optimized for research hospitals, labs, R&D centers, and universities.
What is a Magnetically Shielded Room?
A magnetically shielded room (MSR) is an enclosure constructed from high-permeability materials — typically MuMetal® — that attenuates ambient magnetic fields within its interior, creating a controlled low-field environment. By providing a path of low magnetic reluctance around the shielded space, the walls redirect external magnetic flux through the shielding material itself rather than allowing it to pass through to the interior.
The result is an interior environment where background magnetic field levels can be reduced from the microtesla range of typical indoor environments down to the nanotesla or even picotesla range, depending on the number of shielding layers and the system design.
High-performance MSRs often combine passive shielding (the mu-metal layers themselves) with active compensation systems — typically Helmholtz coil arrangements — that continuously measure and cancel residual fields within the room. Magnetic Shields USA offers both active and passive shielding solutions.
Degaussing systems are also commonly included to periodically demagnetize the shielding material and restore its attenuation performance over time.
MSRs are used wherever a measurement, process, or technology is sensitive enough that ambient magnetic noise would compromise performance — from OPM-MEG brain imaging and quantum computing to semiconductor metrology and fundamental physics research.
Standard Magnetically Shielded Room Sizes
| Model | Internal Dimensions (Feet & Inches) | Internal Dimensions (Meters) |
| Compact | 4’3″ × 4’3″ × 6’7″ | 1.3 × 1.3 × 2.0 |
| Compact Plus | 6’7″ × 6’7″ × 7’3″ | 2.0 × 2.0 × 2.2 |
| Small | 7’10” × 7’10” × 7’10” | 2.4 × 2.4 × 2.4 |
| Standard | 9’10” × 9’10” × 7’10” | 3.0 × 3.0 × 2.4 |
| Grand | 13’1″ × 9’10” × 7’10” | 4.0 × 3.0 × 2.4 |
| Custom | Fully bespoke | Fully bespoke |
Shielding Performance & Engineering Benefits
MuRoom® leverages wide MuMetal® panels with minimal joints, in-house thermal treatment, and proprietary joining methods to deliver superior attenuation of magnetic fields.Key technical advantages:
High shielding factors across broad frequency ranges
Modular design for easy transport and assembly
Integrated cable penetrations, lighting, and cooling options
Aluminum structural framing ensures long-term mechanical stability
Compatible with degaussing and active cancellation technologies
Interior & Exterior Finishing Options
- 21+ color options for interior panel cladding
- Customizable flooring materials and colors
- Integrated field-free lighting for safe visual inspection and operation
Common Magnetic Shielded Room (MSR) Applications
MuRoom® is used in leading-edge scientific and industrial applications where ultra-low magnetic field environments are critical. Learn more about magnetic shielded room applications in our resource.
| Application | Target Residual Field | Recommended Size |
| MEG (Magnetoencephalography) | < 8 nT | Standard (3.0 m / 9’10”) |
| Particle Physics Research | < 1 nT | Custom |
| Transmission Electron Microscopy | Configurable | Custom |
| Neuroscience and Biological Studies | Configurable | Custom |
| OPMs, Magnetometry, Quantum Labs | Configurable | Custom |
Electronics Integration & Custom Systems
Magnetic Shields USA offers a full suite of custom-built electronics for use with shielding systems:
Low-noise current drivers (customizable current ranges and output channels)
Degaussing controllers and software
Active field cancellation modules
Custom test rigs and control interfaces
Electronics are designed, built, and tested in-house for maximum quality control and performance assurance
Degaussing: Precision Demagnetization
To achieve ultra-low residual magnetic fields below 2nT, MuRoom® can be equipped with a precision degaussing system. This eliminates the residual magnetism (~30nT) typically found in MuMetal®.
Features
- Field gradients below 1nT/m
- Output optimized for performance and application type
- Software-controlled “one-button” operation
- Compatible with custom MuRooms and standalone shields
Typical Degaussing Use Cases
- Functional brain imaging (MEG)
- Quantum device calibration
- Magnetometer development
- Magnetic field metrology and testing
Active Magnetic Field Cancellation
Our patented active shielding system dynamically cancels ambient magnetic fields inside the shielded room, delivering industry-leading performance.
System Highlights
- Shielding factor > 50,000
- Real-time residual field control (<1nT)
- Flat-panel or cylindrical coil geometries
- Optional flexible PCB-printed coils for curved or wearable applications
- Optimized for large volumes up to 1 cubic meter (35.3 ft³)
Applications
- Wearable MEG systems
- Quantum computing environments
- Gravity sensors
- Optically Pumped Magnetometers (OPMs)
- Magnetic field mapping and calibration systems
Why Choose Magnetic Shields USA?
We are the North American subsidiary of Magnetic Shields Limited (UK), a global leader in the development of MuMetal® shielding technologies. We provide:
Local Expertise
Local engineering support across the United States
Installation
On-site installation and commissioning
Ongoing Support
Long-term service and system calibration
Industry Expertise
Custom engineering for academic, medical, aerospace, and industrial markets
Get in Touch
Partner with Magnetic Shields USA for proven magnetic shielding solutions tailored to your North American application. Let’s solve your magnetic shielding challenge—together.