Integrated superconducting magnet
and variable temperature systems are available in a wide
variety of configurations.
10T Optical Split-Pair System with Side-Loading VTI |
Solenoid Systems
The most popular (and cost efficient) systems
will include a superconducting solenoid magnet,
commonly with a 2 or 3 inch cold bore. This will
allow a sample tube O.D. of 1.5 or 2.5 inches.
Available magnet fields are
up to 20T.
A wide variety of bore sizes are available.
Homogeneity ranges from basic
+ 0.5% over a 10mm
DSV to NMR Quality.
Split-Pair Systems
There are a wide variety of split pair
configurations available for the researcher
requiring perpendicular access to the magnetic
field. The most popular configuration is with
a conventional top-loading variable
temperature insert.
For optical research
applications, dewars with windows can be
provided.
A unique, high field (10T)
split-pair optical system is pictured at left.
This system features a side-loading variable
temperature insert. Cryomagnetics is ready to
quote custom configurations to fit your research
needs.
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Multiple Axis Systems
Cryomagnetics has manufactured 2 and 3-Axis
superconducting magnets dating back to 1996.
These systems are very popular and we always
have a number of multi-axis systems in
manufacturing. Some of the many standard
multi-axis products include:
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9T/4T (9T Z-coil
Solenoid, 4T X-coil Split Pair)
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9T/1T (9T Z-coil
Solenoid, 1T X-coil Split Pair)
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1T/1T/1T (All 1T Split
pairs - X,Y,Z)
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5T/1T/1T (5T Z-coil
Solenoid, 1T X-coil Split pair, 1T Y-coil
Split pair)
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9T/1T/1T (9T Z-coil
Solenoid, 1T X-coil Split pair, 1T Y-coil
Split pair)
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Custom
configurations are available.
Variable Temperature
Insert
Typical working space diameter is 37mm
(~1.46") for a 52mm (~2.0") cold bore
superconducting magnet. Sample temperature range
is from 1.4K to 325K. Wider ranges of
temperature, or high power is available. A
sample probe is provided with two 10-pin
electrical connectors. Calibrated temperature
sensors are installed on the vaporizer and
sample mount.
Dewar Options
Several dewar configurations
are available to meet your requirements. The
most common are top-loading bucket dewars with
belly sections. Bottom-loading bucket dewars are
especially popular with larger superconducting
magnet magnets, particularly high-field
solenoids. Optical dewars (bottom-looker for
solenoids, multiple options for split-pairs) are
available.
Upgrade paths are available
for He3 and dilution inserts. The
superconducting magnet and support assembly can
be designed with an upgrade path in mind.
Always designed with safety
in mind, all integrated VTI systems are designed
to ASME code and manufactured in Cryomagnetics'
facility under strict quality procedures.
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High Field Superconducting
Magnet System with VTI |
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Typical Variable
Temperature Insert |
9T/4T Superconducting Magnet ready to be
installed in a dewar |
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Example 15T Superconducting
Magnet System with VTI Quotation
Use this example to help define your specific
needs...
15 tesla Superconducting Magnet
System for Variable Temperature Research
Superconducting Solenoid
Maximum Rated Central Magnetic Field: 15T @ 4.2K
Homogeneity: 0.1% over a 10 mm DSV
Clear bore diameter: 52 mm
Persistent switch installed.
Quench protection installed.
Low Loss Dewar
Bottom—loading, bucket style.
Aluminum / fiberglass construction.
Evacuation valve, safety positive pressure relief
device.
Liquid nitrogen shielded.
Usable liquid helium volume of 80 liters (belly
section, volume above the superconducting magnet).
Lifting lugs.
LHe fill/vent ports.
LN2 precool/removal tube.
Quench relief valve.
Redundant one PSI safety pressure relief valve.
B-100, 100 ampere Duty-cycle Optimized current leads.
Superconducting bus bars.
Magnet support provisions
Cover plate for center access port.
19-pin electrical feedthrough.
15 foot long instrumentation cable.
Dual (redundant) Superconducting liquid helium level
sensors installed.
Removable liquid nitrogen level sensor installed.
Variable Temperature Insert
Sample space has a nominal 37 mm diameter working space.
Designed to fit 15T superconducting magnet quoted above.
Operating range from 1.4K to 325K.
NW40 sample vapor pumping port.
Copper baffles.
Hi-Power 50 watt heater installed on vaporizer.
Needle valve flow control.
Non magnetic stainless steel construction.
Sample positioner assembly with (2) two 10-pin
electrical connectors and mates.
Calibrated (1.4K to 325K) Cernox CX-1030-CU-1.4L
temperature sensor installed on sample mount.
Calfit (1.4K to 325K) Cernox CX-1030 temperature sensor
installed on vaporizer/heat exchanger.
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 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.
Model LM-500 Liquid Cryogen Monitor
Set up as a dual-channel instrument to simultaneously
monitor both liquid helium and liquid nitrogen levels
(option 3 installed).
CE-Marked.
Bright vacuum fluorescent display.
Simple, intuitive user interface.
Sample and hold operation. (1 minute to 99 hours
settability)
Manual update or continuous operation.
Sensor de-ice cycle. (LHe only)
Adjustable constant current source.
Sensor calibration via front panel menu.
Can drive sensors up to 200cm active.
High and low setpoint control output.
RS-232 interface.
IEEE-488.2 interface (option 2 installed)
LabVIEW® drivers available.
See photo and further description at
www.cryomagnetics.com/lm-500.htm.
