Janis Research Company, LLC

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About Janis Research Company, LLC

Incorporated in 1961, Janis Research Company, LLC is recognized as one of the foremost suppliers of cryogenic equipment in the world. Through the years, Janis Research has been continually dedicated to the design, fabrication and delivery of the best systems and components in the industry. Using state-of-the-art 3D modeling and CAD/CAM manufacturing, Janis Research has developed a broad range of cryogenic products. With an installed base of over 8,000 systems and a staff of highly skilled scientists, Janis Research has the experience and expertise to supply the system best suited to meet your cryogenic requirements.

Janis Research recognizes that obtaining a cryogenic system represents a long-term commitment for most scientists; therefore, we are devoted to providing you with the highest level of quality and customer support. Just a few of the ways we accomplish this are:

  • Sales and service are provided through a worldwide network of trained and knowledgeable representatives.
  • A dedicated Janis Research sales engineer (most with advanced degrees) is responsible for each system from conceptual design through final QC. Experienced service personnel provide timely and in-depth post-installation support.
  • A stable workforce draws on decades of combined service, and applies this experience to the assembly of each cryogenic system.
  • Customer approval of the final design drawing is obtained for all customized systems.
  • Records on all systems, modifications and design improvements are meticulously maintained for the reference of any future user.
  • Turnkey systems are supplied by offering a full line of cryogenic accessories.
  • Each system is fully integrated and tested before shipping.

Janis Research offers systems for a broad range of applications, with cooling provided by liquid nitrogen, liquid helium, or mechanical refrigerators. Each cooling mechanism has distinct advantages and preferred applications, and a Janis Research engineer can assist in choosing the best cooling method for your application. Some of our key products include:

Janis Research continues to innovate, creating new products and enhancing existing ones as new applications requiring cryogenic equipment are developed. The most detailed and up-to-date information on Janis Research products and applications (including specific performance specifications and key physical dimensions) can always be found on our website. Our ongoing commitment to research and development is helping to keep Janis Research positioned at the leading edge of cryogenic equipment technology.

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About Janis Research Company, LLC


Janis Research offers systems for a broad range of applications, with cooling provided by liquid nitrogen, liquid helium, or mechanical refrigerators. Each cooling mechanism has distinct advantages and preferred applications, and a Janis Research engineer can assist in choosing the best cooling method for your application. Some of our key products are included below.

Micro-manipulated Probe Systems

Micro-manipulated probe systems

Janis Research offers micro-manipulated cryogenic and vacuum probe systems for chips, wafers and device testing from ~3.5 K to 675 K. The micromanipulated probe stations are designed for non-destructive electrical testing using DC, RF, and fiber-optic probes. They are useful in a variety of fields including semiconductors, MEMS, superconductivity, electronics, ferroelectrics, material science, physics and optics. Either LHe/LN2 or a mechanical closed cycle refrigerator provides cooling. Different models locate the sample in ultra-high vacuum (UHV), ultra-high temperature (to 675 K), and magnetic field.

He-3 Systems

Micro-manipulated probe systems

Achieving base temperatures below 300 mK, these systems feature innovative designs that fully integrate the He-3 insert with our high efficiency optical and non-optical cryostats. This modular approach provides significant flexibility, as the He-3 insert is matched with an optical superconducting magnet, electronic components, temperature controller and cryostat. The system performance characteristics and design features can therefore be readily tailored to precisely match individual experimental and budgetary requirements. A wide range of standard models include such features as:

  • Bottom-loading or top-loading of samples
  • Samples located in high/ultra high vacuum, He-3 exchange gas or liquid He-3
  • Optical and non-optical experimental environment
  • Single shot or continuous circulation operation
  • Cryogen-free cooling
  • Application specific models for NMR experiments, Scanning Probe Microscopy, ESR/EPR and neutron diffraction

Dilution Refrigerators

Micro-manipulated probe systems

With a recognized reputation as a world wide leader in custom dilution refrigerator systems, Janis Research Company now offers a family of standardized dilution refrigerator (DR) systems and stand-alone DR cores and stages with competitive prices, fast delivery, optimized design, and proven techniques. The systems can be equipped with either manual or automated gas handling systems, as well as a number of optional items. Cryogen free systems are also available.

Superconducting Magnet Systems

Superconducting Magnet Systems

Janis Research’s renowned SuperVariMag, OptiMag and SuperOptiMag systems offer temperatures between 1.5 K and 325 K (with options to 475 K or higher), and can be supplied with or without optical access. The Janis Research SuperMag series can achieve base temperatures to 0.3 K (He-3) or into the milliKelvin range (dilution systems). Our NbTi systems offer magnetic fields between 5 and 9 Tesla with optional Lambda point refrigerators for reaching higher fields, while our Nb3Sn magnets offer fields of 17 Tesla and beyond. Ultra low loss variable temperature systems are offered for temperatures between 0.3 K to 300 K. Existing Janis Research magnet system designs include:

  • Standard top loading systems with samples in helium vapor
  • UHV compatible systems with split magnets and solenoids
  • Systems for Scanning Probe, Atomic Force and Scanning Tunneling Microscopy
  • Vector Field systems with multiple split magnets
  • Systems for X-ray and Gamma ray diffraction
  • Room temperature (vertical and horizontal) bore systems

Cryostats for Spectroscopy and Electrical Measurements

LN-2 cryostats

Continuous flow cryostats are supplied with a specially designed high efficiency transfer line, and operate by continuously transferring liquid helium (or liquid nitrogen) from a storage dewar. Continuous flow cryostats feature fast cool-down, and are available in either sample in vacuum, flowing vapor or exchange gas configurations.

Reservoir cryostat

Janis SuperVariTemp reservoir cryostats have built-in helium and nitrogen reservoirs, and nearly all models feature fast sample exchange. With low operating liquid helium consumption, they are the ideal choice for experiments that require the long-term cooling of samples.

LN-2 cryostats

Janis liquid nitrogen cooled cryostats are inexpensive and simple to use, and provide a convenient cryogenic sample environment for a wide range of experiments. The VPF series cryostats locate the sample in vacuum, and operate from 65 K up to 500 K, 700 K or 800 K, depending on the model chosen. The VNF-100 cryostat locates the sample in flowing vapor, and operates from 60 K to 325 K.

Closed Cycle Refrigerators

Janis Research closed cycle refrigerators (CCR) systems provide low temperature environments (as low as 2.7 K) without the need for liquid helium or nitrogen. As a result, these systems are simple to operate and inexpensive to maintain. CCR models are available in both sample in vacuum and sample in exchange gas (top loading) configurations. Because only the cryogen required for the duration of the experiment is used, they make an excellent choice for short-term experiments.

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About Janis Research Company, LLC


Janis combines over 50 years of manufacturing experience with extensive engineering capabilities to provide a complete line of standard and customized cryogenic systems for all research applications. Application-specific products include cryostats for optical microscopy, FTIR, and Mössbauer spectroscopy. Click on the links below to be taken to specific application or product pages for more information. Email sales@janis.com for assistance from our applications engineers who will help you determine the best system for your requirements.

Contact Janis to discuss how our equipment might be used in your own situation.

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About Janis Research Company, LLC

News & Events

Some of our recent press releases are below. Visit www.janis.com/NewsMain_News_KeySupplier.aspxfor a complete list.

5-axis sub-Kelvin Helium-3 cryostat for ARPES

Woburn, Massachusetts, USA – January 20, 2014 – After successfully developing the world’s first 4-axis high power sub-Kelvin He-3 cryostat for Angle-Resolved Photoemission Spectroscopy (ARPES) application in 2008, Janis Research’s ultra low temperature (ULT) group is proud to announce a 5-axis high power sub-K He-3 cryostat for ARPES application has been successfully tested recently, and it has the following performance specifications:

Five (5) degree of freedom:  X-motion, Y-motion, Z-motion, Phi (azimuthal), and theta (tilt)

Base temperature on the rotating/tilting sample holder: 840mK

Azimuthal rotation range: 195 degree

Tilting range: /- 30 degrees

Cooling power with phi =0 and theta = 0: see plot

UHV compatible

Baking temperature: 90 degree C


Tejas Deshpande, Graduate Student at CalTech, and Ashley Huff, Lab Technician at Janis Research, perform a LHe transfer.


Ultra-low temperature polarization-sensitive receiver for millimeter-wavelength Atacama Cosmology Telescope

Cool science below 100 mK at 5140 meters elevation!

Janis ResearchJanis Research

Janis Research’s ultra low temperature (ULT) group is proud to announce that it has developed, in collaboration with multi-agency scientific collaboration team called ACTPol, a new pulse-tube cooled cryogenic platform for the Atacama Cosmology Telescope (ACT). The ACT is a six-meter Gregorian telescope located at an altitude of 5,200 meters (17,000 ft) on Cerro Toco, in Northern Chile, and is dedicated to studies of the structure and evolution of the early universe through direct observation of the Cosmic Microwave Background (CMB) radiation at different polarizations and with arcminute resolution.  Please visit www.janis.com/ACTPol_IOP.aspxfor more information.

Custom cryogenic systems meet Sub-Kelvin spm requirements

Janis Research Company Inc

If you need custom designed cryostats and refrigerators to meet Sub-Kelvin Scanning Probe Microscopy (SPM) requirements, check with Janis Research Co., LLC of Woburn, Massachusetts.  They have over 50 years experience designing and manufacturing cryostats to provide quiet, low vibration, and low RF noise environments for atomic resolution scanning probe microscopy.

Janis Custom Cryogenic Systems are built to specification and incorporate a modular design which can provide multiple features in one unit including 0.009 K to 1 K range, UHV < 10^-10 Torr or better, and up to 17 T magnetic fields using solenoid magnets and to 9-4 T or 9-1-1 T using Vector magnets.  For optimum atomic resolution, these robust all-welded systems use proprietary refrigeration designs to eliminate intrinsic acoustic noise.

Capable of B/T of 10^3 T/K, Janis Custom Cryogenic Systems are highly customizable with standard features including all electropolished stainless steel, gold plated copper, silver plated aluminum, proprietary wiring, pre-cooling methods such as mechanical heat switches, and IR shutters.  Fully automatic gas handling systems with a color touch screen provides one-button cool-down.

Janis Custom Cryogenic Systems are priced from $150,000.00 up and include He-3 and Dilution Refrigerator options.  Price quotations are provided upon request.

For more information contact:

Janis Research Co., LLC

Ann M. Carroll, Marketing Specialist

225 Wildwood Ave.

Woburn, MA 01801

(978) 657-8750 x119  FAX (978) 658-0349

e-mail: acarroll@janis.com


Janis Research Company Announces Newly Extended Standard Warranty

Wilmington, Massachusetts (July 11, 2012) – Janis Research Company (“Janis”), one of the world’s leading manufacturers of cryogenic research equipment, today announced a newly extended warranty policy for its broad range of cryogen-cooled and cryogen-free products. For orders received after June 30, 2012, Janis will now provide a standard warranty period of three years (36 months) from date of shipment or purchased installation.

“This warranty upgrade is a reflection of our total commitment to quality, reliability, and customer support,” said Tom Pasakarnis, Janis’s CEO. “We recognize that purchasing a cryogenic system represents a long-term commitment for our customers and our extended warranty affirms that the commitment is mutual.”

Janis’ newly extended warranty covers defects in material or workmanship in new products manufactured by Janis (the “Product” or “Products”). It applies to all Products for which a purchase order has been received by Janis on or after July 1, 2012; Products purchased prior to July 1, 2012 are covered by the warranty policy in effect on the date the purchase order was received.

The full policy, including limitations, can be found on Janis’s website at www.janis.com/Support_Home_KeySupplier.aspx. Please click the link for “Warranty Policy for all orders received after June 30, 2012.”

Miniature Transportation Sample Vacuum Chamber for Micro-manipulated Probe Stations

Woburn, Massachusetts – October 22, 2013 – Janis Research Company is pleased to announce that it is offering a patent pending, miniature, transportable sample vacuum chamber capable of maintaining a sample in vacuum during transportation via an atmosphere environment. The vacuum chamber can be used for transferring wafer/substrates under vacuum from a glove box with special environment into a vacuum or cryogenic micro-manipulated probe station (or into a vacuum chamber) and back into the glove box after testing, measurements or preparations. This transportable vacuum chamber protects the wafer/substrates from atmospheric contamination both on loading and unloading.

Unlike a common vacuum load lock the vacuum chamber has the following features.

  • typical sizes of 50 mm diameter and 25 mm thickness
  • no gate valves required
  • very convenient and easy operation
  • low cost
  • mounting of the transportable sample mount without increasing base temperature of the cryogenic probe station

For more information please visit www.janis.com/MiniVacuumChamber_IOP.aspx.

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About Janis Research Company, LLC

More information

Micro-manipulated probe systems

Since 1961 Janis Research Company has been providing the scientific and technical community with the highest-quality cryogenic equipment for research, characterization, and industrial applications. Over the years, our family of customers has grown to include some of the world’s largest corporations and best-known research centers and institutions. The reasons for this record of success are simple: precision engineering and quality manufacturing; ease-of-operation; day-after-day reliability and performance; and a level of service and support unmatched in the industry.

Janis Research recognizes that obtaining a cryogenic system represents a long-term commitment for most scientists; therefore, we are devoted to providing you with the highest level of quality and customer support. Just a few of the ways we accomplish this are:

  • Sales and service are provided through a worldwide network of trained and knowledgeable representatives.
  • A dedicated Janis Research sales engineer is responsible for each system fromconceptual design through post-installation support.
  • A stableworkforce draws on decades of combined service, and applies thisexperience to the assembly of each cryogenic system.
  • Customerapproval of the final design drawing is obtained for all customizedsystems.
  • Records on all systems, modifications and design improvements are meticulouslymaintained for the reference of any future user.
  • Turnkeysystems are supplied by offering a full line of cryogenic accessories.
  • Each system is fully integrated and tested before shipping.

Janis moved to its Wilmington, MA manufacturing and sales office in 1983 where it continued to grow and prosper.

Micro-manipulated probe systems

In 1996, Janis received a NASA Public Service Group Achievement Award for the SIRTF test cryostat, delivered to the Jet Propulsion Laboratory for characterization of mirrors at liquid Helium temperatures.

In 1998, Janis was awarded a R&D 100 Award for the development of a capillary cooling cryostat, allowing the disciplines of FLNS and capillary electrophoresis to be combined for the first time.

In late 1998, Janis acquired RMC Cryosystems adding a number of new product lines for the scientific, engineering, and medical technology markets.

Micro-manipulated probe systems

In mid-1999, Janis initiated an employee ownership plan. All Janis employees are now shareholders in its future and are rededicated to providing the scientific community with the best in cryogenic products and service.

In mid-2000, Janis received another NASA Public Service Group Achievement Award, again from the Jet Propulsion Laboratory. This time it was for Janis’ performance on the FACET program, the development of a cryostat to comply with the Shuttle Hitchhiker program and providing a platform for microgravity experimentation. This second PSGAA, for a small company, is without precedent in the history of the JPL program and perhaps in all of NASA.

In early 2005, Janis Research completed construction of a 6,000 square foot building addition at its existing location in Wilmington, Massachusetts. This new test and assembly area is equipped with state of the art cryogenic working stations along with an ultra high vacuum station, ultra low vibration section and an ultra low temperature facility. This addition was primarily built to expand our manufacturing capabilities to support the current demands of the scientific community for more sensitive measuring instruments and more sophisticated cryogenic systems.

In late 2010, Janis Research completed an expansion of their Wilmington, Massachusetts manufacturing facility and began 2011 with the entire manufacturing operation under one roof. (The machine shop department had been relocated in a building next door for about two years.) The expansion fostered continuity of manufacturing processes and allowed improved flow of product, materials, and communications within the company. Lean manufacturing objectives were continuing to be implemented, leading to improved throughput and improvement in on-time delivery to customers.

The increased availability of floor space created by the 8,000 square foot building expansion and the Lean manufacturing practices were anticipated to provide ample room for the growth Janis Research has been experiencing over the past several years. The newly created space housed the shipping and receiving departments, system integration area for large systems, and additional office space to accommodate the increase in staff required to meet continued growth in business.

In June 2013, Janis Research moved into its new 67,000 square foot company headquarters in Woburn, Massachusetts. The larger facility more than doubled Janis’ space and will support the continued growth of all Janis product lines, including cryogen-free, liquid helium/nitrogen cooled, and ultra-low temperature systems. Sales, engineering, design, manufacturing and testing functions are housed in our Woburn facility.

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