Halbach Array
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NMR & MRI

Ultra-uniform magnetic cylinders for resonance imaging and spectroscopy.

Target Buyer:Medical device and analytical instrument developers.
Halbach MRI gradient cylinder

Best-Fit Application Use

Best fit for instrument teams balancing bore size, field strength, homogeneity, weight, and long-term temperature stability.

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Solution Highlights

  • Permanent magnet MRI
  • Desktop NMR
  • Mapped bore-field assemblies

Common Use Cases

  • Medical imaging
  • Chemical analysis
  • Portable resonance instruments

Implementation Focus

  • PPM level homogeneity
  • Temperature stabilization
  • Bore volume definition
  • Segment sorting for field uniformity

Buyer Decision Criteria

  • Bore diameter, useful imaging or measurement volume, and field strength.
  • Homogeneity target and acceptable correction strategy.
  • Temperature stability, drift control, and material grade.
  • Handling, shielding, and export packaging needs for strong bore magnets.

Factory Support Scope

  • Segmented Halbach cylinder assembly for dipole and multipole fields.
  • Bore mapping and homogeneity support for prototype validation.
  • Magnet sorting and angular fixture control.
  • NdFeB or SmCo grade selection by stability and temperature needs.

Application Evaluation Matrix

Evaluation MetricTypical RangeBuyer Relevance
Homogeneity<100 ppmDefines image resolution.
Useful Bore VolumeDefined by sample or imaging envelopeA field value is only meaningful inside the volume where the instrument actually measures.
Temperature DriftReviewed by grade, environment, and correction methodResonance systems can be more sensitive to drift than to headline peak field.

RFQ Preparation Checklist

  1. Bore diameter and required Tesla rating
  2. Useful field volume and homogeneity target
  3. Temperature stability and correction strategy
  4. Weight, handling, shielding, and mapping report needs

Risk and Mitigation

  • Thermal drift: Passive or active thermal shielding design.
  • Homogeneity target not manufacturable in the requested envelope: Review bore size, segment count, grade, sorting, and correction strategy before quote freeze.
  • Ambiguous mapping acceptance: Define probe path, useful volume, temperature, and ppm metric before sample production.

Validation Deliverables

  • Bore field map with measurement volume definition.
  • Segment angle and cylinder dimension inspection.
  • Material grade, coating, and orientation documentation.
  • Packaging and handling notes for instrument teams.

RFQ to Delivery Flow

  1. Send bore, field, homogeneity volume, temperature range, and instrument constraints.
  2. We review field target and manufacturable segment geometry.
  3. Prototype mapping verifies the bore field before production approval.
  4. Production follows matched magnet sorting and approved mapping controls.

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Buyer FAQ

What is the max field?

Typically up to 1.5T for permanent Halbach cylinders.

Do you quote portable MRI-style Halbach cylinders?

Yes. We can review bore size, field target, homogeneity volume, weight limit, and mapping needs for low-field or portable systems.

Is peak field enough for an NMR or MRI quote?

No. Bore size, useful volume, homogeneity, temperature stability, and measurement method are all needed for a meaningful review.

Related Resources

Engineering RFQ Inbox

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Include target torque/speed, quantity, and delivery location.

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Use for drawing, specification, and RFQ clarification.