Closed-cycle cryostat DX series

vacuumcompact

Overview The DX Series closed-cycle cryostat is a variable-temperature low-temperature platform based on G-M (GM) refrigerators. It provides stable, controllable sample temperatures from cryogenic up to near-room temperature for electrical, optical and magnetic measurements in high vacuum or ambient environments. Configurations are modular to integrate cold head, compressor and optical windows or electrical feedthroughs.

Key features

• Designed for electrical, optical and magnetic experiments at low temperatures.
• Compact modular design with no consumable cryogen; long maintenance intervals and scalable options.
• Two-stage cooling: first stage for radiation shielding, second stage for sample cooling.
• Sample environments: high vacuum or atmosphere; multiple optical window materials available.
• Interchangeable gold-plated oxygen-free copper sample holders for rapid adaptation to experiments.
• Temperature sensing options: silicon diode, Cernox (for high magnetic fields) and iron‑rhodium sensors as required.
• Multiple compressor, cooling method and accessory configurations to suit lab and industrial setups.

Models & main technical specifications (grouped)

• DX series (examples: DX-101D, DX-101DL, DX-305D, DX-205D, DX-408D2, DX-415D):
  • Temperature range: typically 3.5–325 K or 4–325 K depending on model.
  • Heater: single heater 60 W or 70 W depending on model.
  • Cold head options: 101D, 101DL, 305D, 205D, 408D2, 415D; lowest temperatures down to ≲3 K for selected heads.
  • Cool-down: examples from ~60 min to 150 min to reach 4 K depending on model.
  • Cooling power examples: from 0.1 [email protected] K & 3 W@50 K up to ~1.5 [email protected] K & 35–40 W@~43–50 K.
  • Compressors and cooling: CAN-11B/C, FA40H, CKW-21A, F50H; air- or water-cooled options.
  • Power supply: single-phase 220 V or three-phase 380 V depending on configuration.
• Bench / B-type cold head group (examples: DX-062B, DX-082B, DX-182B2S, DX-204N, DX-408S2):
  • Temperature range: typically 3.5–325 K (some variants 7–325 K).
  • Heater: commonly 70 W.
  • Lowest temperatures: down to <3.0 K for some heads; cool-down times typically 60–100 min.
  • Cooling power: examples from 0.5 [email protected] K & 30 W@80 K up to higher-power heads reaching tens of watts at low temperatures.
  • Typical compressors: F50H, F70H, F-100, HC-4E; usually water-cooled for bench configurations.
• Closed-cycle chillers / larger cold head group (examples: DXCH202, TCH204, DXCH208R/L, DXCH210, KDE210SA):
  • Temperature range: commonly 10–325 K.
  • Heaters: typically 50 W or 70 W depending on variant.
  • Lowest temperatures: generally below 10 K for this family; cool-down examples 40–75 min to 10–20 K.
  • Cooling power: examples from several watts at 10–20 K to tens of watts at 30–80 K.
  • Compressors: HC-4E, F70H, KDC6000V, mainly water-cooled.
• Large / variable-temperature cryostats (examples: DX500B, DX400B, DXC110LT, DXCH110, DXCH104, DX125D, DXKDE400SX, DXKDE535):
  • Temperature ranges vary by model (typical examples: 14–325 K, 15–325 K, 25–325 K, 30–325 K).
  • Heaters: wide range (70 W up to 300 W or more) depending on model.
  • Cold heads: RDK-500B, RDK400B, C110LT, CH110, CH104, RD-125D, KDE400SX, KDE535.
  • Cooling power examples: tens to hundreds of watts at higher temperatures (e.g. 40 W@20 K, 80 W@30 K, 175 W@77 K for larger systems).
  • Compressors and cooling: typically F70H class compressors and water cooling for high-capacity setups; power consumption scales with system size.

Technical specifications & options

• Temperature sensors: silicon diode, iron‑rhodium, Cernox™ (suitable for use in magnetic fields).
• Temperature stability: down to ±0.01 K with appropriate temperature controller (e.g. DXTC-290).
• Vacuum interface: standard KF25 vacuum port for suction; integrated release valve KF16 where specified.
• Experiment mounting: suitable for optical and electrical experiments; most cold heads (except pulse-tube types) can be mounted at various angles; optional three-stage vibration isolation can reduce sample vibration to <1 μm.
• Window materials: fused quartz, IR silicon, sapphire, ZnSe, ZnS, germanium, Si, CdF2, Mylar, Kapton and custom options; 0 to 1–5 windows depending on experiment.
• Typical integrated items: vacuum cover, temperature sensor and heater, gold-plated oxygen-free copper sample holder, KF25 vacuum port, KF16 release valve, 8‑pin electrical vacuum connector, compressor and cold head drive lines, high-pressure gas lines and toolkit.