Spicer Consulting magnetic field cancelling systems can stabilise the ambient magnetic field to restore the resolution and accuracy of an electron beam tool. Field cancelling systems stabilise the field by dynamically creating nearly equal and opposite field changes.
Make the ambient magnetic field “OK” for electron microscopy
- Stabilise the field by dynamically creating nearly equal and opposite field changes
- Remove image distortions cause by ambient fields
- Greatly improve the resultant spatial resolution of the microscope
Get a comprehensive site survery
- Survey site with purpose-designed Analysis System for SEMs, TEMs and similar sensitive equipment
- Measure magnetic fields and floor vibrations in X, Y and Z directions
- Obtain gradient information along the entire column length for both DC and AC fields
Maintain, trouble-shoot and upgrade field cancelling systems
- Diagnose the cause of interference on your SEM
- Obtain custom cable layout designs, using proprietary magnetic field modelling software
- Local recalibration and repair services
The following comparison highlights the differences between the available models
SC22 Magnetic Field Cancelling System
- Lower cost
- Cancels and displays AC fields only
- Simple 3-button user interface
- Option for dual sensors using external mixer
- USB port for remote operation and monitoring
- Room size or frame mounted cable options
- 50 x field reduction at 50/60 Hz
- Bandwidth 2.5 Hz to 5 kHz
- Adapts to field changes within 100 μs
SC24 Magnetic Field Cancelling System
- Higher performance
- Cancels and displays AC and DC fields
- Touch screen user interface
- Built in mixer for dual sensors
- Automatic DC reset
- Adjustable trip levels
- Built-in test field generator
- USB and Ethernet ports for remote operation and monitoring
- Room size or frame mounted cable options
- > 50 x field reduction at 50/60 Hz
- > 400 x field reduction at DC with DC sensor
- Bandwidth 2.5 Hz to 5 kHz with AC sensor
- Bandwidth DC to 5 kHz with DC sensor
- Adapts to field changes within 100 μs
SC26 Magnetic Field Cancelling System
- Purpose designed to protect electron beam tools in the vicinity of overhead wafer transport robots in 300 mm semiconductor wafer fabs
- Cancels 50/60 Hz and 9kHz magnetic fields
- Also cancels DC fields with added DC sensor
- Displays AC and DC fields
- Touch screen user interface
- Built in mixer for dual sensors
- Automatic DC reset
- Adjustable trip levels
- Built-in test field generator
- USB and Ethernet ports for remote operation and monitoring
- Cables are fitted inside the cabinet of the tool
- 20 x field reduction at 9 kHz
- 40 x field reduction at 50/60 Hz with AC sensor
- 200 x field reduction at DC and 50/60 Hz with added DC sensor
- Adapts to field changes within 10 μs
Which Magnetic Field Cancelling System is for you?
SC22 Features
- Protects your investment in electron beam technology by stabilising the magnetic field environment
- Cancels and monitors the AC field
- Low cost, high performance system
- Intelligent user interface
- Automated set up
- Cancels AC fields from 10 Hz to 5 kHz
- 50 x field improvement at 60Hz
- Full 3 axis (X, Y, Z) system
- Up to 60 mG (6.0 µT) pk-pk range
- Adapts to field changes within 100 µs
- Supports dual sensors for TEMs and high gradient fields
- USB monitoring port
[further SC22 information]
SC24 Features
- Makes the ambient magnetic field “OK” for the electron microscope
- Adapts to field changes within 100 µs
- Touch screen intelligent user interface with automatic setup and DC reset
- Simultaneous AC & DC field display with choice of Tesla or Gauss unit
- Mixes dual sensors to create virtual sensor “inside” the EM column
- Use AC sensors for cancelling 50/ 60 Hz AC line fields or:
- Use DC sensors for cancelling tram and train DC fields and 50/60Hz
- Built-in test field generator
- Ethernet and USB ports for remote operation and monitoring
[further SC24 information]
SC26 Features
- Makes the ambient magnetic field “OK” for electron beam tools in 300 mm wafer fabs
- Real time, wideband cancelling from DC to > 9 kHz fields
- Adapts to field amplitude and frequency changes within 10 μs
- Touch screen intelligent user interface with automatic setup and DC reset
- Simultaneous AC & DC field display with choice of Tesla or Gauss units
- Mixes dual sensors to create virtual sensor “inside” the EM column
- Built-in test field generator
- Ethernet and USB ports for remote operation and monitoring
[further SC26 information]
