The Janis Research SVT-200 is a SuperVariTemp cryostat engineered for variable temperature experiments across the range of <2 K to 300 K. This liquid helium–cooled system immerses samples in flowing helium vapor, enabling simultaneous cooling of both sample and holder while eliminating the need for thermal anchoring and sample mount heating. The result is precise, efficient temperature control with minimal helium consumption.
## Technical Specifications
• **Cooling Medium:** Liquid Helium (LHe)
• **Operating Temperature Range:** <2 K to 300 K
• **Liquid Helium Capacity:** 6 liters
• **Sample Environment:** Flowing helium vapor
• **Standard Electrical Feedthroughs:** One 10-pin, two 8-pin connectors
## Key Features
• Quick sample exchange via top-loading positioner
• Simultaneous cooling of sample and holder eliminates complex thermal management
• Low helium consumption optimizes operating costs
• Operation below 4.2 K achievable without pumping the main helium reservoir
• Lambda point operation readily achieved
• Includes Lake Shore temperature controller and calibrated sensor
• Safety pressure relief valve standard
• Pre-tested system configuration
## Typical Applications
The SVT-200 supports a broad range of cryogenic experiments requiring stable, variable temperatures. Its flowing helium vapor design proves particularly advantageous for spectroscopy, materials characterization, and condensed-matter physics where thermal stability and rapid sample access are critical.
## Compatibility & Integration
The SVT-200 integrates readily into Janis Research dewars or adapts to alternative dewar systems. Extensive optical and electrical options scale the system to specific experimental needs: bottom-looking optical access, indium-sealed cold windows, cooled radiation shields, and custom sample positioners including rotation capability. Multi-pin and coaxial connectors, helium level indicators, liquid nitrogen autofill systems, and temperature sensors beyond the standard configuration are available. Integration with Lake Shore M81-SSM systems is supported via cables and adapters.
