Products

Standard Configuration

Variable Temperature Cryostat

A cryostat is at the center of every cryogenic probe station, and Janis has been a world leader in the design and manufacture of research cryostats for over forty-five years. The ST-500 cryostat cryostat provides a mechanism for cooling samples efficiently and effectively. The sample is mounted on a removable sample chuck (holder); sample chucks are available in a variety of configurations including grounded, coaxial, and triaxial. The sample is fully surrounded by a thermal shield to minimize radiant sample heating, resulting in the lowest possible sample temperature. A high efficiency transfer line is used to provide sample cooling using either LHe or LN₂, and includes an integrated adjustable cryogen flow control valve. Two silicon diode thermometers and a high wattage heater are used to regulate and monitor the sample temperature within the broad operating temperature range of 3 K – 475 K. Optional optical access through the cryostat bottom flange makes transmission experiments possible.

ST-500-2-4CX Probe Station Mechanical Drawing

Please click here to download the ST-500 series Probe Station datasheet (228 KB). The downloaded file will be in PDF format which is viewable and printable with Acrobat Reader, a free plug-in utility from Adobe.

Please click here to download the probe requirement questionnaire (212 KB). The downloaded file will be in PDF format which is viewable and printable with Acrobat Reader, a free plug-in utility from Adobe.

To download the free acrobat plug-in software click here.

Standard Equipment

• Low vibration model ST-500 cryostat with integrated vacuum chamber, sample mount, and cooled radiation shield.
• High efficiency LHe/LN₂ transfer line with needle valve flow control.
• Two silicon diode thermometers, installed at the control heat exchanger and at the sample mount.
• Cartridge heater for temperature control.
• Cooled radiation shield window.
• Four integrated X-Y-Z probe station stages with probe support arms, cooled probe holders and LF or MW probes.
• Four edge welded metal bellows to permit probe translation.
• 10-pin electrical feedthrough.

Optional Equipment

• Monoscope with fiber-optic light source, vertical boom stand with vertical and horizontal adjustment, CCD camera, LCD color monitor. Available models include zoom of 7:1, 12.5:1, 16:1.
• Cryogenic temperature controllers from the leading controller suppliers. Each controller supplied by Janis includes full integration and testing with the system.
• Turbopump station including 52 L/s turbomolecular pump, wide range vacuum gauge and readout, stainless steel flexible pumping line. Available with mechanical or dry diaphragm backing pump.
• Vibration isolation table, 30” x 30” work surface secured to black anodized frame utilizing pneumatic isolators.
• Portable ultra-quiet air compressor for vibration isolation table.
• LN-50 liquid nitrogen storage dewar, with adapter to match the Janis high efficiency transfer line.