Systems Available for Immediate Delivery

Special Values

Liquid Helium

• Continuous Flow, Variable Temperature Cryostats – Sample in Vacuum (SuperTran series)
  These continuous flow cryostats are a fast and flexible way of reaching low temperatures in the laboratory. Lightweight and inexpensive they can be operated in any orientation, accessing a temperature range of 1.4 K to 325 K, and are available in both optical and non-optical configurations for a wide range of applications. Options include systems designed for specific experiments such as microscopy or FTIR spectroscopy, and temperatures as high as 700 K can be reached. All systems are supplied with a high efficiency continuous flow helium transfer line and include standard components which can be interchanged with other systems for maximum versatility.

• Continuous Flow, Variable Temperature Cryostats – Sample in Vapor (SuperTran-VP series)
  These continuous flow cryostats utilize a sample-in-vapor configuration allowing fast sample exchange and efficient cooling for samples where good thermal contact with the sample holder is difficult. Like the SuperTran cryostats, a temperature range of 1.4 K to 325 K is accessible and both optical and non-optical systems are available.  Options include systems designed for specific experiments such as FTIR spectroscopy.

• Custom-Engineered Systems
  In addition to our complete line of laboratory cryogenic equipment, Janis Research offers a wide range of award winning custom system design capabilities. With in-house computing facilities, computerized designs and manufacturing capabilities, Janis' experienced physicists and engineers are readily available to discuss your special requirements for any type of cryogenic application.

• Liquid Helium Research Dewars (CNDT, RD, CNRD and VSRD series) 
  Liquid nitrogen shielded and superinsulated dewars with demountable or non-demountable bottom flanges, available in a range of sizes and cryogen capacities. All dewars are thermally cycled and leak tested before leaving the factory to ensure that our high standards are maintained.

• Micro-manipulated Probe Systems   
  State-of-the-art Micro-manipulated Probe Systems for advanced on-wafer process and device characterization with probes for measurements between DC and high frequency (up to 67GHz), in a variety of footprints. These systems are cryogen free, liquid helium- or liquid nitrogen-cooled, and cover temperatures between ~3 K and 700 K. Complete systems include X-Y-Z translation and rotation stages, microscopes, cameras, video monitors and pumping stations.

• Superconducting Magnet Systems (SuperVariMag, OptiMag, SuperOptiMag and SuperMag)
  Janis Research offers complete superconducting magnet systems with variable temperature inserts and optical access to the high field region.  Magnetic fields as high as 17 Tesla are now routinely supplied with quick sample exchange into a flowing helium vapor, a static helium vapor or a UHV environment.  Independent variable temperature inserts provide temperatures from a few milliKelvin up to several hundred K, in various types of cryostats.  Standard systems use liquid helium cooling for the magnet and the insert, and can also incorporate a mechanical cooler to reduce the helium consumption. 

• Ultra Low Temperature Systems
  Janis Research offers a complete family of ultra low temperature cryogenic products including dilution refrigerators, ³Helium systems, and  ADR cryostats.  Standard system designs are on hand for review and modification to fit virtually all experimental requirements and constraints.

• Variable Temperature Cryostats – Exchange Gas (VariTemp series)
  Variable temperature cryostats with the sample located in a column of static exchange gas, or in vacuum.  These systems offer excellent temperature stability and are used with LHe and LN₂ as needed.

• Variable Temperature Cryostats – Flowing Vapor (SuperVariTemp series)
  These variable temperature cryostats use flowing vapor to cool the sample to temperatures of between 1.4 K and 300 K. The sample positioner is top loading for fast sample exchange, and both optical and non-optical configurations are available.

• Variable Temperature Cryostats – Flowing Vapor – High Efficiency (SuperVariTemp Model 400)
  Using the basic design of the SuperVariTemp cryostats, this high-efficiency cryostat is designed to provide low cryogen consumption and high temperature homogeneity and stability. Available in both optical and non-optical configurations, this cryostat is the ideal choice for experiments requiring extremely long hold times or minimal temperature fluctuations. Temperatures of up to 400 K can be reached on the standard systems, with the option of temperatures as high as 600 K on non-optical systems.

• Detector Cooling Systems
  Janis Research offers a variety of standard and custom designed cryostats for cooling detectors to 4.2 K, 300 mK or 100 mK, with an option for a built in variable temperature insert for operation up to 300 K or higher. These are available in non-magnetic stainless steel or aluminum light weight construction, with special dewars for telescope systems that operate in various orientations. Contact Janis for a specific design to match your requirement.

Liquid Nitrogen

• Variable Temperature Cryostats – Sample in Vacuum (VPF series)
  The Janis VPF cryostat is an inexpensive liquid nitrogen cryostat offering operating temperatures from 65 K to 800 K and sample in vacuum configuration.  Options include systems designed for specific experiments such as FTIR spectroscopy.

• Variable Temperature Cryostats – Sample in Vapor (VNF series)
  The VNF cryostat offers an operating temperature range of 65 K - 325 K with sample in flowing nitrogen vapor.  It also features quick refill capability with included funnel assembly.

• Continuous Flow, Variable Temperature Cryostats – Sample in Vacuum (SuperTran series)  
  These continuous flow cryostats are a fast and flexible way of reaching low temperatures in the laboratory. Lightweight and inexpensive they can be operated in any orientation, accessing a temperature range of 1.4 K to 325 K, and are available in both optical and non-optical configurations for a wide range of applications. Options include systems designed for specific experiments such as microscopy or FTIR spectroscopy, and temperatures as high as 700 K can be reached. All systems are supplied with a high efficiency continuous flow helium transfer line and include standard components which can be interchanged with other systems for maximum versatility.

• Custom-Engineered Systems
  In addition to our complete line of laboratory cryogenic equipment, Janis Research offers a wide range of award winning custom system design capabilities. With in-house computing facilities, computerized designs and manufacturing capabilities, Janis' experienced physicists and engineers are readily available to discuss your special requirements for any type of cryogenic application.

• Micro-manipulated Probe Systems  
  State-of-the-art Micro-manipulated Probe Systems for advanced on-wafer process and device characterization with probes for measurements between DC and high frequency (up to 67GHz), in a variety of footprints. These systems are cryogen free, liquid helium- or liquid nitrogen-cooled, and cover temperatures between ~3 K and 700 K. Complete systems include X-Y-Z translation and rotation stages, microscopes, cameras, video monitors and pumping stations.

• Detector Cooling Systems (DCD series)
  Janis Research offers a variety of standard and custom designed cryostats for cooling detectors to 77 K, with an option for a built in variable temperature insert for operation up to 700 K or higher. These are available in non-magnetic stainless steel or aluminum light weight construction, with special systems for CCD, camera heads and detector arrays cooling and other multi-orientation units for use in a variety of transmission applications ranging from IR and visible light to X-rays and Gamma-rays.

Cryogen Free

• Micro-manipulated Probe Systems  
  State-of-the-art Micro-manipulated Probe Systems for advanced on-wafer process and device characterization with probes for measurements between DC and high frequency (up to 67GHz), in a variety of footprints. These systems are cryogen free, liquid helium- or liquid nitrogen-cooled, and cover temperatures between ~3 K and 700 K. Complete systems include X-Y-Z translation and rotation stages, microscopes, cameras, video monitors and pumping stations.

• Adiabatic Demagnetization Refrigerator Systems
  Cryogen-free, two-stage adiabatic demagnetization refrigerator (ADR) offers a typical hold time of more than three days below 100 mK with no added heat load (reaching a base temperature of approximately 60 mK).

• Cryogen-free He-3 Cryostat  
  Janis has developed a cryogen-free He-3 cryostat, which uses a two stage Gifford-McMahon cryo-cooler for He-3 condensation.  After the He-3 gas is condensed, an internal charcoal sorption pump is used to pump the He-3 pot down to near 300 mK.

• Cryogen-free Dilution Refrigerator  
  The Janis JDry-100 provides convenient and affordable cooling of samples and devices to temperatures below 20 mK, with cooling power greater than 100 µW at 100 mK.

• Closed Cycle Refrigerator Systems – 10 K  
  Utilizing a Gifford-McMahon cooling cycle with a lead regenerator, these systems provide a simple means of reaching temperatures as low as 8 K in a range of experimental configurations. These systems may be operated in any orientation.

• Closed Cycle Refrigerator Systems – 4 K  
  Janis Research Company is currently the sole North American distributor of 4 Kelvin, two stage, Gifford McMahon refrigerators manufactured by the Cryogenic Department of Sumitomo Heavy Industries, Ltd., of Japan. These state of the art closed cycle refrigerators provide from 0.1 to 1.5 Watts of cooling power at 4.2 K, with a base temperature of less than 3 K (with no parasitic or experimental heat loads).  They feature the same reliability and ease of use which characterize more conventional 10K refrigerator systems and can be integrated with the same variety of optical/non-optical, sample in vacuum / exchange gas cryostat configurations as our 10 K lines of refrigerators.

• Cryogenic Cold Traps  
  Closed Cycle Cold Traps Systems are supplied in a variety of customized configurations for operation at precisely controlled temperatures between 8 K and 400 K.

• Superconducting Magnet System – Cryogen Free
  Janis Research is proud to announce that it is the sole North American distributor of high-quality CRYOGEN FREE superconducting magnet systems from Japan Superconductor Technology Inc. (JASTEC). These magnet systems use the same 4K Sumitomo Heavy Industry coolers also distributed by Janis. Standard and custom systems are available.   And like our liquid helium-cooled magnet systems, they can be incorporated with variable temperature inserts.

• Daikin GM-JT Cryocoolers
  Janis Research Company offers Gifford-McMahon refrigerators with a J-T 3rd stage manufactured by Sumitomo.  These were primarily designed for radiotelescope astronomers.  These three stage cryocoolers have high cooling power at 4.3 K as well as very stable temperatures at the third stage.

• Pulse Tube Refrigerator Systems
  The latest innovations from the Sumitomo Heavy Industries R&D labs are low-vibration pulse tube refrigerators.  This exciting new technology is enhanced by the addition of a remote cold head motor and valve unit, eliminating another source of vibration at the cold finger.  With base temperatures of 45 K or 55 K, and a cooling power of 10 W at 77 K or 5 W at 80 K for Single Stage; and base temperatures of <3.5 K, and a cooling power of 0.5W at 4.2 K for Two Stage, these new refrigerators are ideal for applications where low vibration levels are critical, including detector cooling.

• Split Stirling Systems  
  Sumitomo Heavy Industries is now offering a Stirling cycle miniature cryocooler.  This small, lightweight cooler is ideal for cooling sensors and other electronics when low power consumption is important.  This split Stirling cooler has a mean time before failure of 24,000 hours, a cooling capacity of 1 W at 80 K and has a power consumption of only 55 W.

• Custom-Engineered Systems
  In addition to our complete line of laboratory cryogenic equipment, Janis Research offers a wide range of award winning custom system design capabilities. With in-house computing facilities, computerized designs and manufacturing capabilities, Janis' experienced physicists and engineers are readily available to discuss your special requirements for any type of cryogenic application.

• Detector Cooling Systems (DCD series)
  Systems are available in both closed and open cycle configurations and are suitable for use in a variety of military, commercial and research applications.

Accessories and Ancillary Equipment 
Janis stocks accessories and spare parts for all your cryogenic needs.  The full range includes:

• Flexible Helium Transfer Lines (FHT series)

• Liquid Helium Storage Dewars (includes IC series) 

• Liquid Nitrogen Storage Dewars (LN series)

• Mechanical Pumping Stations (RVP, DDP, SV and BE series)

• High Vacuum Pumping Stations (TP series)

• Temperature Controllers 

• LHe & LN₂ Level Indicators 

• Cryostat Accessories

• Parts List (including epoxies, greases, wire, etc.) 

We can supply a complete cryogenic system that is fully integrated and tested, thus avoiding compatibility problems when the system reaches your lab.