This site uses cookies. By continuing to use this site you agree to our use of cookies. To find out more, see our Privacy and Cookies policy.
Skip to the content

International Journal of High-Energy Physics

Key supplier

News & Events

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

Cryocooler System with Recirculating Helium Gas

Model PT-7 Cryogen Free Closed Cycle System cools Janis Model ST-500 continuous flow cryostat.

Model PT-7 Cryogen Free Closed Cycle System cools Janis Model ST-500 continuous flow cryostat.

Woburn, Massachusetts, USA – September 9, 2014 - The ongoing global helium shortage continues to adversely affect researchers, many of whom are unable to use these their existing continuous transfer cryostats to perform research due to high operating costs or limited LHe availability. Janis Research is now offering a solution to help researchers that have limited operating budgets but that can gain access to capital equipment funding.

Janis Research has developed a series of cryogen free, low vibration, closed cycled cryocooler systems that use recirculating helium gas as a direct replacement for liquid helium, to cool continuous flow cryostats without the use of LHe. Pulse tube-cooled (PT) and Gifford-McMahon (G-M) cryocooler options are available, in various capacities and base temperature configurations. Helium gas passes through a series of heat exchangers on the cryocooler, and then flows through the integrated vacuum insulated transfer line into the cryostat. After cooling the sample, the gas is then returned to the cryocooler for re-cooling and continued circulation.

These recirculating gas cryocooler systems are available for use with almost any existing continuous transfer type cryostats, such as the Janis SuperTran series. The Model PT-7 pulse tube-cooled system shown below operates continuously with a base temperature of less than 7 K (with options for lower temperatures). The interchangeable system transfer line tips make the cryogen free cryostat universal for all Janis SuperTran cryostats including Models ST-100, ST-300, ST-400 and ST-500. The microscopy cryostat system as shown can, with proper mounting, maintain the vibration level on the cryostat body at less than 20 nm.

For more information contact:

Ann Carroll
Janis Research Company, LLC
225 Wildwood Avenue
Woburn, MA 01801 USA
Phone: +1 781 491-0888, extension 119
FAX: +1 781 491-0889
e-mail: acarroll@janis.com
www.janis.com/RecirculatingHeliumGasSystem_IOP.aspx

Janis top-loading Helium-3 Cryostat (<300 mK) with sample in UHV ��� for atomic resolution STM

Atomically resolved topographic image of NbSe2 obtained at constant current mode

Distance (nm)
Atomically resolved topographic image of NbSe2 obtained at constant current mode. Tunneling current = 150 pA, bias voltage = 20 mV, scan speed = 13nm/s. (Data courtesy of Pratap Raychaudhuri, Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, India. Measurements were made in a non-UHV system.)

Woburn, Massachusetts, USA – August 7, 2014 – The Janis Research ultra-low temperature (ULT) group is proud to announce the development of an enhanced top-loading Helium-3 cryostat with sample in UHV environment, the model HE-3-TLSUHV-STM. This ULT system is optimized for atomic resolution STM measurements, and can be integrated with a commercially supplied or user-built STM. A central UHV tube (32 mm diameter or larger) and gate valve provide top-loading access to the low temperature, high magnetic field region for sample and tip exchange. Vertical, horizontal, and 2D/3D vector field superconducting magnets are available and fully integrated.

ULT STM systems are frequently used to investigate the electronic and magnetic properties of materials. Applications include quantum computing and information, future electronics, and nanoscale manufacturing. A ULT STM system can be used to observe or manipulate the topography and electronic structures of atoms, islands, molecules, and surfaces. Techniques such as magnetic force microscopy (MFM) and spin polarized STM can be used to investigate a variety of materials, in conjunction with variable temperature and magnetic field conditions. Typical materials studied include metals, semiconductors, thin films, and carbons such as graphene and carbon nanotubes.

The Janis HE-3-TLSUHV-STM provides operating time of >80 hours at a base temperature of <300 mK; longer operating times are also possible by using additional He-3 gas. Quiet operation is assured through the use of proprietary acoustic noise reduction features inside the 1 K pot, and vibration reducing mechanical support structure on the He-3 pot; it is also possible to operate the system without pumping on the 1 K pot for further vibration reduction. The system includes a mechanical heat switch for rapid precooling, and also includes cooled 4 K and 1.5 K radiation shutters for maximum hold time and minimum base temperature. Other available features include a sliding seal, low and high frequency wiring, and pre-installed optical fibers.

For more information contact:

Ann Carroll
Janis Research Company, LLC
225 Wildwood Avenue
Woburn, MA 01801 USA
Phone: +1 781 491-0888, extension 119
FAX: +1 781 491-0889
e-mail: acarroll@janis.com
www.janis.com/HE-3-TLSUHV-STM_IOP.aspx

Top-loading Cryogen-free Helium-3 Cryostat with Sample in Exchange Gas for High Pressure DAC

Model HE-3-TLSXGAS for DAC He-3 cryostat

Model HE-3-TLSXGAS for DAC He-3 cryostat

Woburn, Massachusetts, USA – June 13, 2014 – Janis Research's ultra low temperature (ULT) group is proud to announce the development of a top-loading cryogen-free Helium-3 cryostat with sample in exchange gas for high pressure diamond anvil cell (DAC) having broad operating temperatures between 0.32K and 300K. An indium sealed sample chamber made of OFHC copper is locate at the bottom of the sample positioner ("top-loader") with a sample space of 2.25" diameter and 3.25" height.

The sample chamber makes direct contact to the He-3 pot cold plate, while the sample is cooled through a few-torr He-3 exchange gas introduced into the sample chamber from a mini-exchange gas handling system locate at the top of the cryostat. During testing at Janis Research���s Woburn facility, a calibrated thermometer was installed inside the sample chamber to simulate the user���s experiment, and it reached approximately 320 mK, with holding time longer than 50 hours. A stainless steel capillary starting from the top of the cryostat enters the sample chamber, and is used to fill high pressure gas into the DAC. Helium-4 gas with 100 bar pressure has been applied inside the stainless steel capillary per the user's request, with which the user will be able to achieve 1.0 million bar pressure on the DAC.

This cryostat can also be used for other experiments that require cooling down samples below 1.0 K in exchange gas. At the same time, the sample space can be made slightly larger if necessary. This new system will be installed at the Institute of Physics (IOP) at Beijing, China soon.

For more information contact:

Ann Carroll
Janis Research Company, LLC
225 Wildwood Avenue
Woburn, MA 01801 USA
Phone: +1 781 491-0888, extension 119
FAX: +1 781 491-0889
e-mail: acarroll@janis.com
www.janis.com/HE-3-TLSXGAS-DAC_IOP.aspx

Custom cryogenic systems meet Sub-Kelvin spm requirements

LHe transfer

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

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

Janis Research Company, LLC
225 Wildwood Avenue
Woburn, MA 01801 USA
Phone: +1 781 491-0888, extension 119
FAX: +1 781 491-0889
e-mail: acarroll@janis.com
www.janis.com/5-axis_sub-K_ARPES_IOP.aspx

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

Cool science below 100 mK at 5140 meters elevation!

JDR-100-ACTPol in its test enclosure, attached to the automated Gas Handling System GHS4, during its tests at Janis.
Receiver positioning scheme on the telescope optical axis inside of the cabin. Neutral cabin floor position is tilted down at 5% to horizon, bringing both PT-tubes to vertical positions.

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.

Visit www.janis.com/ACTPol_IOP.aspx for more information.

Custom cryogenic systems meet Sub-Kelvin spm requirements

Micro-manipulated probe systems

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.

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
www.janis.com

Janis Research Purchases Larger Facility

Wilmington, Massachusetts – June 5, 2013 – Janis Research Company (Janis), one of the world���s leading manufacturers of cryogenic research equipment, announces the purchase of a new 67,000 square foot company headquarters in Woburn, MA. The larger facility, located at 225 Wildwood Avenue, Woburn, Massachusetts, will more than double Janis���s current space and support the continued growth of all Janis product lines, including cryogen-free, liquid helium/nitrogen cooled, and ultra-low temperature systems.

Janis Research Co. is an employee-owned company, and has been located in Wilmington, Massachusetts, for the past thirty years. Sales, engineering, design, manufacturing and testing functions are housed in the Wilmington facility, and all Janis employee-owners will move to the Wildwood Avenue location upon completion of building renovations. Janis anticipates moving into the new facility by June 30, 2013.

Press Contact: Ann Carroll, Marketing Specialist, acarroll@janis.com
Phone: +1 978-657-8750, press 8 then 119.

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.

Request Info

All fields are mandatory unless marked as optional.

Your details

By submitting this form I consent to Janis Research Company, LLC contacting me, using the contact details displayed above.