Closed Cycle Probe Station
The ARS manufactured PSF-10-1-4 Closed Cycle Cryogenic Probe Station provides a high vacuum cryogenic environment of 7 K- 800 K (with appropriate high temperature interface) for measuring multiple devices consecutively without breaking vacuum or warming the sytem. The ARS Probe Station features up to eight probes with 1 μm sensitivity, 2 inch measurement area, < 1 μm vibration levels, fast sample cooldown, custom wiring for DC and microwave measurements (0-67 GHz), large optical access and optional 7:1 zoom microscope with ring light.
ARS manufactures both the cryocooler and the probe station. This integrated approach ensures consistent performance and also facilitates diagnostics and service of the integrated system.
- DC, RF properties
- Microwave properties
- Nanoscale electronics
- Electrical and optical properties
- Quantum dots and wires
- 10 K-400 K temperature range
- 2 in. test area
- 2.75 in. clear view top window
- Up to 6 micro-manipulated probe arms
- 2 additional accessory ports
- Thermally anchored triaxial single tip probe holders with
replaceable tungsten tips
- 1 µm sensitivity precision actuators
- High stability spring-loaded linear motion stages
- All stainless steel vacuum enclosure for low vacuum and
fast pumping times
- 7:1 zoom microscope with ring light
- Super soft copper braids transmit maximum cooling power and minimal vibrations to cold stage
- Elastomeric isolators on table for high frequency vibration dampening
- Soft air mount feet for high shock and low frequency vibration dampening
- Heated radiation shield for faster sample change
- Cryogen free
- Fully customizable
- Cold head (DE-204AF)
- Compressor (ARS-4HW)
- 2 helium hoses
- Stainless steel vacuum enclosure
- Nickel plated OFHC copper radiation shield
- 1 high purity quartz window
- 2 in. diameter sample stage
- 4 micromanipulated probe arms
- 10 tungsten DC probe tips
- Instrumentation for temperature measurement and control:
- 10 pin hermetic feedthrough
- 50 ohm thermofoil heater
- Silicon diode sensor curve matched to (± 0.5 K) for control
- Calibrated silicon diode sensor (±12 mK) with 4 in. free length for accurate sample measurement
- Instrumentation for radiation shield temperature control:
- 10 pin hermetic feedthrough
- 2 50 ohm cartridge heaters
- Silicon diode sensor curve matched to (± 0.5 K) for control
- Sample holder for optical and electrical experiments
- Temperature controller
- Low vibration table
Options and Upgrades
- Additional probe arms
- Custom wiring configurations (please contact our sales staff)
- Load lock upgrade
- Magnetic field upgrade
- Ultra low vibration interface upgrade
- 4 K cold head (0.2 W @ 4.2 K)
- 5.5 K cold head (3 W @ 10 K)
- Maximum cooling power upgrade (DE-210)
- Turbo upgrade for faster cooldown times
- 450 or 500 K high temperature interface
- 800 K high temperature interface
- Custom temperature sensor configuration (please contact our sales staff)
- Window material upgrades (custom materials available)
The ARS Advantage
The DE-204SF cold head is a precision machine carefully tuned to achieve temperatures below 4 K with 0.2 W of cooling power at 4.2 K.
The DE-204AFcold head is a rugged workhorse built with power and durability in mind, achieving temperatures below 9 K with 2 W of cooling power at 10 K.
The DE-204PF cold head is a hybrid of the the 4 K and 10 K philosophies, achieving a balance that exhibits the best of both worlds, with temperatures below 5.5 K and 3 W of cooling power at 10 K.
Our high temperature interfaces use a unique combination of mechanical and thermodynamic properties to create a high temperature thermal disconnect between the cold head and the sample space. This allows for heating of the sample space far in excess of the maximum 355 K temperature of our cryocoolers.
450 K The Easy Way
Our 450 K interface is a simple semi-permanent addition to the cold tip that expands the upper sample temperature range by 95 K utilizing most of the same instrumentation as our standard cryocoolers.
800 K - Pouring on the Heat
Our specially designed 800 K interface goes beyond the standard techniques to provide a unique system that maximizes thermal conduction at low temperatures while minimizing heat transfer at high temperatures. Beyond the safe operating temperature of silicon diodes, the standard sensors are replaced with E-type thermocouples and platinum RTDs.
Our technicians painstakingly wrap each cold head for optimum thermal anchoring. We offer you the choice of a variety of wiring options, from our standard offerings of single strand copper and low noise coaxial wiring packages to any number of custom wiring configurations.
Typical instrumentation for temperature measurement and control include one 50 ohm thermofoil heater, one curve matched silicon diode for rough temperature control, and one free length calibrated diode for direct attachment to the sample or sample holder for accurate temperature measurement. Silicon diode sensors are favored heavily for most standard applications because of their low cost, durability, and stability, but we do offer a wide variety of other sensors for different applications such as Cernox sensors for high magnetic fields, E-type thermocouples for 4 K-800 K measurements, and platinum RTDs for accurate high temperature measurements.
Our wide selection of wiring and instrumentation is matched by an equally wide selection of temperature controllers from Cryocon, Lake Shore, and Scientific Instruments.
Window Materials for All Transmission Ranges
High purity quartz is the standard window material for most of our optical cryostats, but we have a wide variety of other window materials available, from near IR materials like CaF2 and KBr to far IR and terrahertz like Ultra High Molecular Wright Polyethylene and Picarin, to Kapton, Mylar and beryllium for x-ray experiments. If you don't see the window material you're looking for, please contact one of our sales representatives.
Optimized for Weak Signal Collection with Minimum Heat Load
The tiered optical access of the large clear view vacuum shroud window and radiation shield optical ports allows for a large cone of optical access and at the same time limits the area of exposure to 300 K thermal radiation.
Low Stress Window Mounts
Our window ports are designed to gently cradle the window material, creating a low stress seal that limits optical distortions.
The water cooled ARS-4HW compressor that powers the DE-204 Series cold heads has many benefits that are amplified in small laboratory settings. The water cooling redirects heat energy that would otherwise be dumped into the lab by a large cooling fan. The lack of a large cooling fan also dramatically reduces the noise of these compressors (only 60 dBA). Additionaly with minimum air circulation, the air currents and dust are kept to a minimum. The high efficiency heat exchanger results in low water usage and saves space inside the compressor, giving it a small footprint. When water is not available our Coolpac™ remote recirculation system can send cooling water from up to 100 feet away.
The ARS DE-204 Closed Cycle Cryocooler operates on a pneumatically driven Gifford-McMahon refrigeration cycle that is both mechanically simple and robust.
12,000-Hour Maintenance Cycle
Over time the internal components of the cold head begin to wear. Eventually the performance of the cold head will decline and some time after 12,000 hours certain internal components need to be replaced or refurbished. With most closed cycle cryocoolers the only option is to send the cold head back to the manufacturer for service.
A Second Option
The simplicity of the ARS pneumatically driven cryocooler allows for another option. Our customers can purchase a service kit for our 10 K and 5.5 K cryocoolers that replaces all of the worn components. This service kit can be ordered ahead of time and reduce down time to a matter of hours instead of weeks.
Probe Station: PS-2-4 Specifications
|DE-204||Closed Cycle Cryocooler
|Refrigeration Type||Pneumatically Driven Gifford-McMahon Cycle|
|Liquid Cryogen Usage||None, Cryogen Free|
|DE-204AF||< 10 K - 350 K|
|DE-204SF||< 4.2 K - 350 K|
|DE-204PF||< 6 K - 350 K|
|With 800 K Interface||(Base Temp + 2 K) - 700 K|
|With 450 K Interface||(Base Temp + 2 K) - 450 K|
|*Based on bare cold head with a closed radiation shield, and no additional sources of experimental or parasitic heat load.|
|20K||90 min ( 65 min with turbo upgrade)|
|Within 1K of Base||160 mm (90 min with turbo upgrade)|
|Upgrade to 210 Cooler for minimum cooldown times.|
|Warm Up Time-|
|Heater Power||50W Sample, 100W Radiation shield|
|Base to 300K||30 min Sample, 30min Radiation shield|
|Break Vacuum||1 hr|
|Number of Probe Arms||4, standard|
|Accessory ports||2, standard|
|Measurable Area||2 in. square|
|Radial Travel (X-axis)||63 mm (1.13 in.)|
|Lateral Travel (Y-axis)||51 mm ( 2 in.)|
|Vertical Travel (Z-axis)||25 mm (1 in.)|
|Translation Scale||10 µm|
|Sample to Window Distance||63 mm (2.48 in.)|
|DC-RF||Tungsten with Coaxial or Triaxial Cable
(custom tips available)
|DC-67 GHz||Contact ARS for Custom Microwave Probe Solutions|
|Fiber Optic||Contact ARS for Custom Fiber-Optic Probe Solutions|
|Vibration Isolation Table-|
|Vibration Level||< 1 µm (With Cryocooler Running)|
|Table Top Height||765 mm (30.1 in.)|
|Table Top Width||927 mm ( 36 in.)|
|Vertical Travel (Z-axis)||737 mm (29 in.)|
|7:1 Zoom Microscope* With CCD Camera*-|
|Field Of View||4.2 - 0.61 mm|
|Working distance||89 mm|
|Numerical Aperture (N.A.)||0.024 - 0.08|
|Highest Resolution||1 µm|
|Magnification||Final magnification depends on the monitor size|
|Image Size||1280 x 1024 pixels|
|Frame rate||25 fps|
|Accessories||Ring Light Boom Stand USAF 1951 Test target|
|Frequency||60 Hz||50 Hz||60 Hz||50 Hz||60 Hz||50 Hz||60 Hz||50 Hz|
|Base Temperature||< 9 K||< 9 K||< 9 K||< 9 K||< 5.5 K||< 5.5 K||< 4 K||< 4 K|
|Cooling Capacity-||4.2 K||-||-||-||-||-||-||0.2 W||0.16 W|
|10 K||2 W||1.6 W||2.7 W||2.2 W||3 W||2.4 W||4 W||3.2 W|
|20 K||9 W||7.2 W||12 W||9.6 W||8 W||6.4 W||8 W||6.4 W|
|77 K||17 W||14 W||23 W||18.4 W||14 W||11 W||14 W||11 W|
|Radiation Shield Cooling Capacity||18 W||14 W||24 W||19 W||18 W||14 W||18 W||14 W|
|(1st Stage Cooling Capacity at 77 K)|
|Maximum Cylinder Temperature||355 K||355 K||355 K||355 K|
|Cooldown Time-||20K||30 min||36 min||25 min||30 min||40 min||48 min||40 min||48 min|
|Base Temperature||60 min||72 min||50 min||60 min||90 min||96 min||90 min||108 min|
|Weight||Expander||7.7 kg (17 lbs)||7.7 kg (16 lbs)||7.7 kg (16 lbs)||7.1 kg (16 lbs)|
|Standard Voltage||Min||208 V||208 V||208 V||190 V||208 V||208 V||208 V||190 V|
|Max||230 V||220 V||230 V||210 V||230 V||220 V||230 V||210 V|
|Power Usage||Singe Phase||3.6 kW||3.0 kW||3.6 kW||3.0 kW||3.6 kW||3.0 kW||3.6 kW||3.0 kW|
|Dimensions:||L||483 mm (19 in)||483 mm (19 in)||483 mm (19 in)||483 mm (19 in)|
|W||434 mm (17.1 in)||434 mm (17.1 in)||434 mm (17.1 in)||434 mm (17.1 in)|
|H||516 mm (20.3 in)||516 mm (20.3 in)||516 mm (20.3 in)||516 mm (20.3 in)|
|Weight||Compressor||73 kg (137 lbs)||73 kg (160 lbs)||73 kg (137 lbs)||73 kg (160 lbs)|
|Typical Maintenance Cycle||12,000 hours||8,000 hours||12,000 hours||12,000 hours|
Closed Cycle Cryogenic Probe Station