Measuring high magnetic fields in cryogenics?
Paragraf’s graphene Hall sensors measure magnetic fields up to 30T right down to millikelvin temperatures.
Paired with a Multi Sensor Test unit, this bundle provides a plug-and-play solution that simplifies integrating cryogenic sensors into existing setups and provides a toolkit for understanding and maximising the potential of graphene Hall sensors in cryogenics.
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Key features
- <1K to 350K operating temperature; high thermal shock tolerance
- -30 to +30T (300kG) fields
- Low power dissipation, in nW range
Applications/Use cases
Magnet calibration
Measurement of the magnetic field at the very low temperatures required is difficult due to the lack of cost-effective solutions available and often the space limitations for a sensor. In most cases magnets are measured and/or mapped at room temperature and the results extrapolated down to low temperature. This method relies on accurate, ideal conditions, for the calculated results to be correct. Ideal conditions are impossible so there is always an error factor.
Key benefits include:
- Removes all calculation uncertainty from the application with direct measurement at the magnet use temperature.
- Adds real time measurement of magnet operation allowing dynamic monitoring of fields during system operation.
- Ability to three dimensionally map fields in the magnet space.
- Very simple user operation giving high quality data without uncertainty.
Quantum computing
Paragraf graphene-based cryogenic sensors play a crucial role in quantum computing by enabling the precise measurement and control of quantum systems at extremely low temperatures. Benefits include:
- Removes all calculation uncertainty from the application with direct measurement of the fields in the QC at the cryogenic use temperature.
- Adds real time measurement of changes in magnetic field in the QC during operation enabling the user to see when field changes affect and account for in the computing function.
- Is simple in design so adds only a small amount of extra hardware to the internals of the QC.
- Is very low power so does not dissipate heat into the small QC volume.
