Cryomagnetics’ C-Mag systems are versatile bench-top property measurement systems that provide the researcher with exceptional range, versatility, accuracy, and automation in materials characterization.
Based on the latest cryocooler refrigeration technology, the systems are very easy to set up, operate and maintain.
Accurate control of sample temperature from <10K to 300K (sample-in-vacuum mode) is provided with simultaneous control of applied magnetic field.
- 4.2K Cryocooler Based
No liquids for the superconducting magnet and only a
small volume of LHe is recondensed for the sample.
This allows sample-in-vapor operation from <2K to
325K in continuous flow operation. Base temperature
< 1.6K is possible in
one-shot mode.
- Turn-Key System
Superconducting magnet, 4.2K cryocooler
system, superconducting magnet power supply,
temperature controller, thermometry, and
Cryomagnetics’ exclusive NAVIGATOR™ system control
software.
- Ease of Use
Sample changer allows user to change samples without
warming magnet or cryocooler.
- Choice of 4.2K Cryocooler
Pulse-Tube or GM.
- Ultra-Low Vibration
Options
Suitable for nanoscience applications
- Flexible Configurations
Up to 10T split pair or 14T solenoid standard configurations.
- 1.0” (25.4 mm) Sample Space
Gold-plated, rotatable sample positioner. -
Upgrade paths to He3 and dilution
refrigerator inserts
Ultra-low temperature dilution
refrigerators with applied magnetic fields up to 14T!
- Configurations available up to 400µW@100mK cooling power
- Fast cool down.
- Operates on a single 4.2K pulse-tube cryocooler
- Ultra-low vibration
- Low maintenance
Cryomagnetics makes the system easy to use with...
- Automated gas-handling system through Cryograph™ software control
- Navigator™ software control for the superconducting magnet system
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Download the
C-Mag Flyer
Example 9T C-Mag
Superconducting Magnet System Quotation
Use this example to help define your specific
needs...
C-Mag Vari-9
Research System
Cryomagnetics’ C-Mag Vari-9 variable temperature
magnetic properties research system provides the
scientist with exceptional range, versatility, and
accuracy in materials characterization. Based on the
latest pulse tube cryocooler refrigeration technology,
the system is very easy to set up, operate and maintain.
The integrated variable temperature insert controls
sample temperature from < 2.0K to 300K. Simultaneous
control of applied magnetic field is up to ±9.0 Tesla -
all without the need for any liquid cryogens and using a
single cryocooler.
The following is an overview of the features and
capabilities of the system.
Cryostat / Cryocooler:
Painted aluminum cryostat compatible with the 9T
solenoid superconducting magnet.
Cryomech model PT-410 ultra-low vibration pulse tube
refrigerator with water-cooled compressor for cooling of
magnet and user samples.
One PT-100 temperature sensor installed on system’s
thermal radiation shield and one ruthenium-oxide
temperature sensor installed on the superconducting
magnet to monitor system refrigeration status.
A safety pressure relief valve is installed on the
system vacuum chamber.
The cryostat will contain a pot containing recondensed
liquid helium. This liquid helium will be used by the
variable temperature insert for sample cooling in
one-shot mode.
The cryocooler system will be capable of recondensing
enough liquid helium overnight to allow an eight (8)
hour run on the following day in one-shot mode, or the
system can be used in continuous mode.
Variable Temperature Insert:
A top-loading VTI is integrated into the
cryostat/cryocooler assembly for user access to the high
field region of the magnet.
This is a closed-loop system. Helium gas from the VTI is
captured and later recondensed.
The VTI is a “sample-in-vapor” type and allows control
of sample temperature from <2.0K - 325K in continuous
mode.
One-shot mode can allow sample temperature to
approximately 1.6K.
The sample tube has a nominal 1-inch diameter, giving
the user a ~25mm diameter inside working space.
A sliding seal is used for sample changes.
A rotatable, gold-plated sample mount with calibrated
(1.4K-325K) Cernox temperature sensor and bifilar wound
heater is provided.
(2) 19-pin connectors are installed on the sample mount.
The vaporizer of the variable temperature insert is also
be fitted with a calibrated Cernox temperature sensor
and heater.
Vacuum pumping station:
The system will be equipped with a pumping station
comprised of an appropriate vacuum pump to capture the
VTI’s off-gas, all necessary valves and vacuum-plumbing.
Superconducting Magnet:
9 Tesla maximum rated central field.
+ 0.1% field homogeneity
over a 10 mm diameter spherical volume.
Fully protected against damage due to accidental quench.
Integrated HTS (BSCCO-2212) magnet current leads.
Cryomagnetics Navigator™ Software
Control System
Navigator™ is a Windows-based software package that
allows complete automation of the superconducting magnet
system control electronics.
The release provided with this system contains basic
control and feedback of the quoted electronics (routine
sample measurements).
Future releases will include specific control and
automation functions for Hall bar, resistivity, and
specific heat measurement.
Cryocon Model 32B Temperature
Controller
Allows monitoring of superconducting magnet temperature
on one channel, while simultaneously controlling sample
temperature on the other channel..
Two multipurpose input channels support Diode, Platinum
RTD and most cryogenic NTC resistive temperature
sensors.
Constant-Voltage, AC excitation of resistive sensors
extends their useful temperature range and improves
accuracy at higher temperatures.
Unique synchronous filter significantly improves control
accuracy and stability with cryocooler systems.
Loop #1 Primary control loop: 50 Watt, 50Ω, three-range
linear heater output.
Loop #2 Secondary control loop: 10 Watt, 50Ω, linear
output.
Fail-safe cryostat over-temperature protection features
protect user equipment from damage.
Extremely low noise design allows operation in the most
demanding of cryogenic environments.
CalGen® feature allows the user to custom fit any Diode,
Thermocouple or resistor sensor calibration curve.
Proven, tested autotuning optimized for cryogenic
systems.
Flexible, easy to configure VFD display.
PC Windows® based Utility software provides a graphical
control panel to simplify configuration, integration and
testing.
Remote interfaces include RS-232 and IEEE-488.2 (GPIB).
NIST traceable calibration. European CE certified.
Model TM-600 Temperature Monitor
Used to monitor temperature of the superconducting
magnet.
2-Channel display to simultaneously monitor both
temperature sensors contained within the system.
CE-Marked.
Bright, two line vacuum fluorescent display.
RS-232 computer interface.
IEEE-488.2 computer interface.
Capability to store custom curves.
Temperature displayed in Kelvin, Celsius, Fahrenheit, or
expressed as a resistance.
Audible alarm (can be silenced).
Control output with high and low setpoints.
Simple keypad with good tactile response.
LabVIEW® drivers available at no extra charge.
See photo and further description at
www.cryomagnetics.com/tm-600.htm.
Model 4G-100 Integrated
Superconducting Magnet Power System
The Model 4G-100 is a single output model with output
current up to ± 100 amperes at 800 watts (± 10 volts up
to 80 amperes, ± 8 volts at 100 amperes).
4-quadrant, true bipolar systems featuring smooth sweeps
through zero.
Automatic quench detection and protection.
A full color, backlit TFT liquid crystal display clearly
indicates output current, voltage, limit settings, and
system status.
Current settability of 0.1 milliamps
Five (5) programmable sweep rate ranges.
Persistent switch heater power supply.
15 foot length output cables.
USB, IEEE-488.2, and Ethernet computer interfaces
standard.
Safety interlocks for persistent switch enable/disable
and changing of important magnet parameters and limits.
Visual confirmation of current present in leads will
alert users to be mindful of safety when operating the
power supply, even if line power is off.
Electronics Cabinet
All quoted electronic instruments will be housed in a
pre-wired console.
Please click on the following
links for more information:
