Lake Shore Infinite Helium Smart Liquid Helium Recirculation System
| Brand | Lake Shore |
|---|---|
| Origin | USA |
| Manufacturer Status | Authorized Distributor |
| Origin Category | Imported |
| Model | Infinite Helium |
| Pricing | Upon Request |
Overview
The Lake Shore Infinite Helium Smart Liquid Helium Recirculation System is an engineered cryogenic infrastructure solution designed to eliminate the operational dependency on bulk liquid helium (LHe) in continuous-flow cryostats. Unlike conventional LHe-cooled systems requiring manual refills every few days—or even hours—the Infinite Helium system implements a fully closed-loop helium gas recirculation architecture with integrated high-efficiency cryocooler staging and precision condensation control. It operates on the principle of re-liquefying boiled-off helium vapor via a multi-stage pulse-tube or GM-type cold head, enabling sustained sub-4 K operation without external LHe top-ups. The system is purpose-built for integration with continuous-flow cryostats used in low-temperature physics, quantum materials characterization, scanning probe microscopy (SPM), and synchrotron beamline applications—where thermal stability, vibration isolation, and long-term unattended operation are mission-critical.
Key Features
- Automated helium recirculation with real-time pressure, temperature, and flow monitoring across all critical nodes
- Base temperature performance down to <2.2 K (dependent on cryostat configuration and thermal load)
- Vibration suppression option delivering <2 nm RMS mechanical stability at sample stage—validated per ISO 20816-1 for micro-vibration-sensitive instrumentation
- Zero-LHe operational mode: eliminates routine dewar filling, reducing helium logistics overhead and associated safety protocols
- Plug-and-play integration with Lake Shore ST-series cryostats (e.g., ST-500, ST-400, ST-FTIR, ST-NMR) and third-party continuous-flow platforms meeting standard LN₂/LHe port interfaces
- Self-optimizing thermal management: dynamically adjusts refrigeration power output to match instantaneous heat load, preserving condensation efficiency and minimizing thermal drift
- Extended maintenance-free runtime: validated for continuous operation up to 6 months without intervention under nominal thermal loading conditions
Sample Compatibility & Compliance
The Infinite Helium system supports a broad range of sample environments including vacuum-compatible, ultra-high vacuum (UHV), and optical access configurations. It complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity) standards for laboratory equipment. When operated with Lake Shore ST-400 cryostats in UHV beamline applications, it meets ASTM F2789 requirements for residual gas analysis compatibility. Full traceability of operational parameters—including cooldown profiles, helium inventory balance, and valve actuation logs—is maintained in accordance with GLP and GMP-aligned data integrity frameworks. Optional 21 CFR Part 11–compliant audit trail functionality is available through MeasureLINK™ software configuration.
Software & Data Management
Control and monitoring are unified via Lake Shore MeasureLINK™—a modular, Windows-based instrument orchestration platform. MeasureLINK enables synchronized temperature ramping, automated valve sequencing, real-time helium mass balance calculation, and concurrent acquisition from integrated sensors (e.g., Cernox™, RuO₂, silicon diodes). Users define experiment workflows using drag-and-drop sequence builders—no programming required. All system states, alarms, and calibration metadata are stored in timestamped, encrypted SQLite databases with configurable export to CSV, HDF5, or MATLAB® formats. Remote access is supported via secure TLS-encrypted Ethernet or Wi-Fi connections, facilitating centralized lab-wide cryogenic resource management.
Applications
- Low-temperature scanning tunneling microscopy (LT-STM) and atomic force microscopy (LT-AFM) requiring sub-3 K base temperatures and nanometer-scale mechanical stability
- Quantum transport measurements in 2D materials, topological insulators, and superconducting heterostructures
- In-situ magneto-optical spectroscopy (MOKE, PL, Raman) under high magnetic fields and cryogenic conditions
- Neutron scattering sample environment support with minimal background neutron absorption
- Calibration and validation of primary thermometry standards (e.g., ITS-90 fixed points below 4.2 K)
- Long-duration reliability testing of cryogenic electronics and photonics components
FAQ
Does Infinite Helium require any external liquid helium supply to start operation?
No. The system initiates cooldown autonomously using its integrated cryocooler; no initial LHe charge is needed.
Can Infinite Helium be retrofitted to legacy cryostats not manufactured by Lake Shore?
Yes—provided the cryostat features standard 1/4″ VCR helium inlet/outlet ports and compatible thermal anchoring geometry.
What is the typical helium inventory loss rate during normal operation?
Less than 0.1% per week under stable thermal load, verified via onboard mass spectrometer-integrated leak detection.
Is remote diagnostics and firmware update capability supported?
Yes—via authenticated HTTPS interface with role-based access control and version-locked update packages.
How does the system handle unexpected power interruption?
It enters a safe thermal hold state with automatic valve closure and passive cooldown preservation; full recovery requires operator-initiated restart sequence.
