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Since 1983, Cryomagnetics
has been a world leading manufacturer of liquid-helium
based (wet) superconducting magnet systems. Our
comprehensive in-house manufacturing capabilities
insures the highest quality possible. Unlike many other
companies offering superconducting magnet/dilution
refrigerators - we are not simply a multi-manufacturer
integrator. We ARE the manufacturer and do not rely on
subcontractors for major items of the system.
Likewise, Cryoconcept is also a world leader in
traditional, liquid helium based dilution refrigerators.
Over the years, many innovative dilution refrigerators
for high power, inverted, pulsed-magnetic field, etc.
have been delivered.
Combining both companies' strengths results in a
dilution refrigerator/superconducting
magnet system with unmatched performance, reliability, and ease of
use.
The dilution refrigerator is available with up to 400μW
of cooling power at 100mK and a base temperature of
less than/equal to 10mK. The superconducting magnet is
available with fields up to 15 Tesla with a variety of bore sizes and
homogeneous volumes.
Many configurations are available:
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Traditional top-loading bucket dewar
systems, highly-efficient superinsulated or
LN2-shielded.
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Bottom loading bucket dewar systems
for larger superconducting magnets allows for reduced
dewar neck diameter and better LHe loss rates.
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Vibration isolation options for
sensitive experiments.
-
Room temperature bore magnet systems
with a separate dewar system for the dilution
refrigerator.
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Custom-designed to fit your particular
application.
The system also incorporates an automatic gas handling system
optimized for use with the dilution refrigerator.
Control is through a user-friendly touch-screen
interface or remotely through an Ethernet interface. The
superconducting magnet can be controlled through
Ethernet, USB, or IEEE-488 interface.
A typical 400µW dilution refrigerator is pictured at left.
Please visit
Cryoconcept's website for more information.
Click here for more
information on Cryomagnetics/Cryoconcept's Cryogen-Free
Systems.
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At left is a typical dilution refrigerator / superconducting magnet system installation.
This system contains a 9T superconducting magnet with 2.0" cold bore.
The dewar is high efficiency superinsulated without a liquid nitrogen shield to minimize maintenance.
The dilution refrigerator is 100µW
at 100mK with a base temperature of
< 10mK.
At the far left-hand side of the
picture is the fully automated
gas-handling system. Everything may be controlled via
our user-friendly Cryograf software.
Example 9T Superconducting
Magnet with Dilution Refrigerator Quotation
Use this example to help define your specific
needs...
Superconducting Magnet, Model
90-200-010L
Solenoid configuration with 2.0" clear bore.
9 Tesla central field (4.2K) at approximately 43
amperes.
11 Tesla central field (2.2K) at approximately 53
amperes.
+
0.1% central field
homogeneity over a 10 mm DSV.
Persistent mode switch installed.
Fully protected against damage due to quench.
Fully tested at 4.2K.
Dewar
High efficiency superinsulated open neck, bucket style.
Aluminum/fiberglass construction.
50 liter usable liquid helium volume.
Evacuation valve, safety positive pressure relief
devices.
Lifting lugs.
Magnet Support Assembly/Dewar Top
Plate
Copper thermal radiation baffles.
LHe fill/vent ports.
Lifting lugs.
LN2 precool/removal tube.
Quench relief valve.
Redundant one PSI safety pressure relief valve.
B-50, 50 ampere Duty-cycle Optimized current leads.
Superconducting magnet bus bars, magnet supports.
Sample access port, with o-ring groove, o-ring, and bolt
circle.
Cover plate for sample access port.
19-pin electrical feedthrough, 15 foot long
instrumentation cable
Superconducting LHe level sensor installed.
Model LM-500 Liquid Cryogen Monitor
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.
LabVIEW® drivers available.
See photo and further description at
http://www.cryomagnetics.com/lm-500.htm.
Available options installed:
Option 1: Analog Output. 0-1 Volt
Option 2: IEEE-488.2 Interface.
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).
CE-Marked
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.
Dilution Refrigerator System
Base temperature: < 10 mK
guaranteed.
Cooling power: > 200
microwatt @ 100 mK.
Standard features:
He3 injection valve.
NW16 right angle valve (isolation vacuum).
NW63 gatekeeper valve (pumping line).
A Jaeger 12 pins connector for temperature measurement
(still temperature and mixing chamber temperature).
A Lemo connector for heater (still heater and mixing
chamber heater).
(3)
38mm ID inputs in vacuum
or helium bath.
Temperature measurement:
1 thermometer on the still.
1 Ruthenium Oxide thermometer on the mixing chamber
plate packaged in copper holder.
Calibrated from 4,2K to 9mK by Nuclear orientation and
Ge standard
Wired with 0.25 mm and 0.1 mm manganin wires.
Extra wiring for 2 thermometers.
AUTOMATIC Gas Handling System:
Computer with tactile screen.
CRYOGRAF Software.
Rotary vane pump.
Turbo pump.
Compressor.
Electro and Pneumatic valves.
Optimized 3He-4He mixture in stainless steel tank.
External nitrogen cold trap including nitrogen Dewar.
Power supply: 200V, single phase, 50Hz.
Please click on the following
links for more information:
Please Contact Cryoconcept at
contact@cryoconcept.com
or
Cryomagnetics at
sales@cryomagnetics.com
Cryomagnetics offers online ordering
for electronic instrumentation:
and cryogenic accessories:
