Other Products / Services #4791528

Based on heat load and size of the superconducting magnet either a dry conduction cooled or ReCon TM style geometry is recommended. ReCon TM style magnet systems use cooling power of a closed cycle 4K cryocooler to recondense gaseous helium back into the liquid Dewar. The evaporating gas is liquefied in a thermodynamically effective manner and the cryocooler is strategically located in the Dewar. The first stage of the cryocooler is used to cool the shields of the Dewar thereby eliminating the need for any liquid Nitrogen. ReConTM magnet systems offer combined benefits of traditional LHe systems with near zero helium boil-off. These style systems are ideally suited for retrofitting existing magnets and sample inserts into a re-engineered Dewar with a suitable gas handling system. Pulse tube cryocoolers are ideal for applications that desire lower vibrations.

ReCon TM solenoid systems available in vertical or horizontal geometries with fields up to 16T and wide bore sizes

ReCon Maxes TM systems are available with vector fi elds up to 6T

ReCon OptiMAxes TM systems are available in 2 or 3-axis geometries

ReCon TM split coil systems available in optical and non-optical confi gurations with fi elds up to 10T

ReCon TM systems with customized gas handling system is available with 1.5K/ He3 insert or with a dilution refrigerator

VFVT system is one of the most desired cryogen free magnet system for use in material science and condensed matter physics laboratory. The system uses a single cryocooler (GiffordMcMahon or pulse tube) to cool the sample space and superconducting magnet, thereby eliminating need for liquid helium and associated expensive recovery systems. Custom designed configurations are available for exotic experimental needs.

Available in vertical fields up to 14T.

Available in horizontal fi elds up to 10T

30 mm sample space with 2K to 325K operation using He exchange gas

Systems available with customer defi ned window material for spectroscopy studies

CF MAxes TM systems available with vector fi eld up to 5T

CF OptiMAxes TM systems available with vector fi elds up to 2T

Unique dual-axis confi guration available for positioning sample in vertical or horizontal fi eld confi guration

Turnkey system with software controlled VFVT environment

Radial access magnets are made of NbTi / Nb3- Sn with wide angular access for accessing the transmitted or refl ected beams. These systems are available for fi elds up to 10T with active shielding. An extension of these are our popular CF MAxes TM systems. These use combination of two or more split coils to produce 2-axis or 3-axis geometries. An OptiMAxes TM uses 3 conduction cooled split coils to provide optical access in two planes. CF MAxes TM magnets have also been produced for our OEMs who have integrated them with Cryogen free dilution refrigerators.

Radial access cryogen free magnet systems available up to 10T

RTB MAxes systems available in 2 or 3-axis geometries

Actively shielded magnet systems available for spectroscopy applications including Mossbauer studies

Custom designs available for x-ray & neutron diffraction

capacitance-based level sensing. Fill control and alarm functions are provided, front panel programmable from 0 to 100 percent of the active sensing length. Two independent control band setpoints, "A" and "B", activate a power receptacle on the rear panel. When the liquid level drops below the "B" setpoint, the power receptacle is energized and remains energized until the liquid level rises to the "A" setpoint. The Model 186 also provides a fail-safe timer feature that automatically de-energizes the power receptacle once a user programmed maximum time interval of up to 600 minutes is reached. "High" and "Low" alarm setpoints to activate front panel LED warning indicators and rear panel relay outputs (for remote alarming) in the event of an overfill or liquid loss condition. The "Low" level alarm also energizes an audible warning which can be silenced from the front panel. The Model 186 is ideal for unattended systems where automated fill is required.

In order to minimize liquid helium loss, the Model 135 automatically energizes the liquid helium level sensor at user programmable time intervals and monitors the normal (resistive) zone as it progresses from the top of the sensor toward the liquid surface. As soon as the normal zone reaches the liquid surface, the level reading is saved and the current in the sensor is turned off until the next sample interval occurs. An LED sensor current indicator is illuminated during each sample. Sample intervals are user programmable from the front panel and can be set between "0.0" (continuous reading) to "600.0" minutes or hours. A manual update switch provided on the front panel can also be set to obtain continuous readings during a helium transfer period or to manually force an immediate measurement.