Cryomagnetics'
experience in manufacturing room temperature bore, liquid helium (wet) systems
for advanced research is unmatched.
As with bucket dewar systems, there
is a wide variety of superconducting magnet
configurations available. Some include solenoids up to 20 tesla,
split-pairs up to 11 tesla, multiple-axis, and custom
designs to your specifications.
The room temperature bore can be
configured in the vertical or horizontal plane. Vertical
bore configurations are very popular for NMR research,
gyrotrons, magnetic separation, and many other
applications. Variable temperature cryostats and other
stand-alone inserts such as dilution refrigerators are
used with vertical room temperature bore systems.
Horizontal room temperature bore
systems are popular with Ion Cyclotron Resonance
research and ion-trap applications. As with vertical
bore configurations, the applications for horizontal
bore superconducting magnet systems are almost endless.
Room temperature bore systems are
designed with your particular needs in mind. Ultra-loss
loss, vertical bore NMR systems are designed with very
long liquid helium hold times. Magnetic separation
systems are designed to handle large forces to the
superconducting magnet, while maintaining good liquid
cryogen loss performance. Gyrotron systems are designed
with strict magnetic field to dewar alignment
specifications while meeting stringent liquid cryogen
loss performance. No matter what your application,
Cryomagnetics can design to your needs and deliver a
system to economically and efficiently aid your
research.
To minimize liquid helium usage,
Cryomagnetics will optimize current lead configuations
to match your experiment schedule. For example,
superconducting magnets used mainly in persistent mode
can be provided with fixed current leads that have as
little as 30mL/hour LHe boiloff in static mode.
For superconducting magnets used
mainly in swept mode operation, current leads can be
optimized so liquid helium usage does not become
excessive when high current is applied. Special
high-resistance persistent switches can also be
installed on these magnets to help minimize liquid
helium usage during magnetic sweeps.
In systems that remain in persistent
mode for extended periods of time, retractable current
leads may be the best solution. High temperature
superconducting (HTS) current leads may be advantageous
in some room temperature bore applications.
Hall effect and temperature sensors
can be installed on the superconducting magnet to
monitor system status.
Designed with safety in mind, all
Cryomagnetics room temperature bore systems are designed
to ASME code.
Contact us today for more
information!
Example 10T Superconducting
Magnet System with Horizontal Room Temperature Bore Quotation
Use this example to help define your specific
needs...
10 tesla Superconducting Magnet
System consisting of the following:.jpg)
Superconducting Magnet, Model
100-475-050
Solenoid configuration.
10 Tesla central field (4.2K) at approximately 98
amperes.
No 2.2K rating.
+ 0.5% central field
homogeneity over a 10 mm DSV.
Persistent mode switch installed.
Fully protected against damage due to quench.
Fully tested at 4.2K.
Superconducting Magnet Dewar
Vertical room temperature bore configuration.
Welded aluminum construction.
Retractable superconducting current leads installed.
Usable liquid helium volume of approximately 50 liters.
Estimated liquid helium loss rate of < 125 mL/hour
(dewar in thermal equilibrium, current leads retracted).
LN2 shielded.
Evacuation valve, safety positive pressure relief
devices.
2.75 inches inside room temperature bore diameter.
Superconducting magnet bus bars.
Magnet supports.
Dual (redundant) liquid helium level sensors installed.
One removable liquid nitrogen level sensor installed.
15 foot long instrumentation cable
LHe fill/vent ports.
Lifting lugs.
LN2 precool/removal tube.
Quench relief valve.
Redundant one PSI safety pressure relief valve.
Model LM-500 Liquid Cryogen Monitor
Set up as a 2-channel instrument to simultaneously
monitor both liquid helium and liquid nitrogen levels.
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 Interface.
LabVIEW® drivers available.
See photo and further description at
www.cryomagnetics.com/lm-500.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).
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.
