UHV probe stations
The ARS PS-L-UHV Probe Station uses Liquid Helium or Liquid Nitrogen as the cooling agent to reach cryogenic temperatures of 4 K or 77 K depending upon the cryogen used.
The core of the system is the same for both the Liquid and Closed Cycle Probe Stations, which enables the Flow Cryostat to be removed from this system and replaced with a Closed Cycle (cryogen-free) configuration at a later point, if your needs change.
ARS manufactures both the Helitran Helium transfer system and the probe station. This integrated approach ensures consistent performance and also facilitates diagnostics and service of the integrated system.
PS-L Probe Station Specifications
| Cooling Technology | ||
|---|---|---|
| LT-3 | Liquid Flow Cryostat | |
| Liquid Cryogen Usage | Liquid Helium or Liquid Nitrogen | |
| Temperature* | ||
| Liquid Helium | ~3.5 K - 400 K* | |
| Liquid Nitrogen | ~77 K - 400 K* | |
| Stability | 0.1 K | |
| * 500K and 800K options also available | ||
| Cooldown Time | ||
| ~ 4.5 K | ~ 10 minutes | |
| Sample Holders* Custom options also available | ||
| Grounded | 2.25” Diameter (standard) | |
| Load Lock – Grounded | 1” Diameter: Custom Sizes available | |
| Electrically Isolated | 2.25” Diameter (Optional) | |
| Coaxial (Biased) | 2.25” Diameter (Optional) Includes BNC Feedthrough with Coaxial Cable to sample stage | |
| Triaxial (Biased with Guard) | 2.25” Diameter (Optional) Includes Triaxial Feedthrough with Coaxial or Triaxial wire. | |
| Radiation Shield | ||
| Material | Nickel Plated OFHC Copper | |
| Diameter | 8” (203 mm) | |
| Ports | 6 (standard) Empty ports have removable blanks installed | |
| Lid | Removable Lid with Sapphire Cold Window | |
| Mounted On | Standoffs for ideal thermal gradient | |
| Optical Access | ||
| Window Mat. | Sapphire | |
| Window Diam. | 2.5” (63 mm) | |
| Window Clear View | 2.25” (57 mm) | |
| Vacuum Shroud | ||
| Material | Welded Conflats, Stainless Steel | |
| Diameter | 11.97” (304 mm) | |
| Probe Ports | 4 (standard): up to 6 - 8 available | |
| Spare Accessory Ports | (2) UHV Flanges installed with blanks (1) 8” Diameter UHV Pump out Port |
|
| Lid | Conflat Flanged Lid with Quartz Window | |
| Mounted On | 31” x 31” Powder Coated Aluminum Plate | |
| Optical Access | ||
| Window Material | High Purity Quartz | |
| Window Diam. | 2.75” (69 mm) | |
| Window Clear View | 2.37” (60 mm) | |
| Probe Arms | ||
|---|---|---|
| GSG Microwave | Tungsten with Coaxial or Triaxial Cable (custom tips available) |
|
| DC/Low Frequency | Contact ARS for Custom Microwave Probe Solutions | |
| Fiber Optic | Contact ARS for Custom Fiber-Optic Probe Solutions | |
| Vibration Isolated Table | ||
| Vibration Level | < 1 µm (With Cryocooler Running) | |
| Table Top Height | 927 mm (36 in.) | |
| Table Top Width | 927 mm ( 36 in.) | |
| 7:1 GigE Microscope with Zoom Lens* | ||
| 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 | |
| Camera Output | USB-2.0 | |
| Frame rate | 25 fps | |
| Accessories | Ring Light Boom Stand USAF 1951 Test target | |
- Magnetic properties
- DC, RF properties
- Microwave properties
- MEMS
- Nanoscale electronics
- Superconductivity
- Electrical and optical properties of nano circuits
- Quantum dots and wires
- Non-destructive device testing
- < 4 K - 400 K temperature range with liquid helium
- 77 K - 400 K temperature range with liquid nitrogen
- 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 optional beneath the 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
- Fully customizable
- Liquid Flow Cryostat
- Transfer Line - Standard 6’ (8’ or 10’ options)
- Flow Meter Panels
- 10” Diameter Stainless Steel Vacuum Chamber with 6 Micromanipulated Probe Ports and 2 Spare NW 80 Accessory Ports Mounted on an Anodized Aluminum Table Top with Extruded Aluminum Support System.
- 8” Diameter Nickel Plated OFHC Copper Radiation Shield
- 2.25” Diameter Grounded Sample Holder made out of OFHC Copper.
- DC, Microwave, or Fiber Optic Probes
- 4 Sensors and 2 Heaters for temperature control and monitoring
- 4 Channel Temperature Controller with interconnecting cable to the cryostat.
- 7:1 Zoom Microscope with <2 micron resolution and coaxial or ring light. Includes a High Resolution 24” Wide Screen LCD Display and a light source for the microscope
- Additional probe arms
- Please contact our sales staff
- Load lock upgrade
- 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)