Products

Probe Stations Incorporating Superconducting Magnets

Superconducting Magnets Specifications

Click image to enlarge view of Janis Research model ST-3T-1-4TX micromanipulated probe station with 3 Tesla magnet, cryogenic research equipment

Please click here to download the Probe Station datasheet (750 KB). The downloaded file will be in PDF format which is viewable and printable with Acrobat Reader, a free plug-in utility from Adobe.

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Please click here to read about Janis Research's new technique of cryogenic probe station special flexible probe tips that allows absorbing the probe arm thermal drift movement during variable DUT temperature measurements.

Please click here to download the probe station requirement questionnaire (59 KB). Since we have many different options for our probe stations, fill the questionnaire out and email it to Janis.

Click here to contact Janis today!

Vibration level: Less than 1 micron
Vacuum environment: ~10-5-10-6 mbar
Temperature range: 5 K to 420 K (with possible field limitation at the higher temperatures)
Conductively cooled 3.0 Tesla solenoid with vertical field direction: Homogeneity of 5% over a 10 mm diameter and an operating current of approximately 35 A
Cryogenic consumption: Helium: ~2.5 liter/hr;
Nitrogen: less than 0.1 liter/hr (without magnetic field)
Temperature stability: ± 50 mK
Cooling time (for standard 2" diameter
[50 mm] sample mount):
~2 hours
Warming up time: ~3 hours with quick warming up option (~5-6 hours without)
Sample mounts:
2" (50 mm) diameter
Ground Chuck

Electrically Isolated Chuck with Bias Voltage Coaxial Cable

Triaxially Guarded Chuck with Cryogenic Triaxial Cable

Special Chuck for Light Transmission Experiments
Up to Six Interchangeable Probe Arms: DC/LF probes: DC to 20 MHz with following tips available:
- Tungsten tips with 0.1 to 200 micron tip radius (optional gold plating)
- Special Tungsten bendable shank and tips (cat whisker)
- Beryllium Copper soft tip with low contact resistance

Coaxial: recommended for currents higher than 1 pA
OR
Triaxial
with leakage current of 1 fA to 2 fA at 1V: recommended for currents lower than 1 pA

Microwave probes:
0-40 GHz
0-50 GHz
0-67 GHz

Fiber probes:
Single Mode
UV-VIS or VIS-IR Multimode
Optical top viewport access:
(different window materials available)
Standard 2.0" (51 mm) clear aperture window
Optional up to 3" (76 mm) clear view window
Radiation shield optical top viewport access: (different window materials available including IR absorbing) Standard 2.0" (51 mm) clear view window
Optional up to 3" (76 mm) clear view window
Ultra-high stability, bipolar, four quadrant superconducting magnet DC power supply 1 mA/hr stability, with programmable field sweep capabilities and IEEE-488 or RS-232 interface. Includes digital displays of magnet current (0.1 mA resolution), magnetic field, set point, sweep rate (as low as 0.1 mA/sec) as well as magnet or power supply voltage, a built in persistent switch heater power source and a quench protection / ramp-down circuit.
Monoscopes with LCD 19" monitor or USB camera and precise translation stages 6.4:1 zoom, 5 microns resolution (216X magnification)
12.5:1 zoom, 3.4 microns resolution (508X magnification)
16.1 zoom 2.2 microns (626X magnification)
Probe travel: ST-1 ST-2
X-axis: 1" (25 mm) 2" (50 mm)
Y-axis: 1" (25 mm)
(15 mm with MW Probes)
2" (50 mm)
(40 mm with MW Probes)
Z-axis: 10 mm (18 mm optional) 10 mm (18 mm optional)
X-, Y-, Z-axes probe translation (incremental units of graduation): 10 microns 12.5 microns
Probe translation resolution: X-, Y-, Z-axes:
Optional motorized stages with translation resolution up to
0.1 micron
5 microns 6.25 microns

 

Optional Items:

  • Additional interchangeable probe arms
  • Additional vacuum chamber ports for possible future upgrade with more probe arms (up to 6 ports total)
  • Additional electrical feedthroughs with cables and wires to sample area
  • Additional metering flow control valve with variable flow (3.6 to 72 Torrl/sec) to introduce different gases into the vacuum chamber
  • System customization options
  • Automatic Temperature Controllers
  • Turbo pumping station including a back-up mechanical pump or oil free diaphragm pump
  • Cost efficient mechanical pumping station for pumping the probe station vacuum chamber
  • Pump-line vibration isolator between the pump and the probe station
  • Pneumatic vibration isolation table with or without portable ultra-quiet air compressor
  • Mechanical pumping station for operation below 4.5 K by pumping helium vent port
  • Liquid nitrogen storage dewar with inlet adapter to accept the probe station transfer line
  • Low vapor pressure thermal anchoring greases
  • Special miniature vacuum chamber to transfer sample under vacuum from Glove Box to Probe Station

CCR-SCON

The model CCR-SCON closed Cycle (cryogen free) probe station incorporating a superconducting magnet has the following specifications:

  • Temperature range with four probe arms:  5 K - 420 K
  • Magnetic field:  3 T vertical
  • Vacuum:  10-5-10-6 mbar
  • # of probes:  2-6 probes
  • Sample size:  50 mm
  • Vibration level:  <1 micron

Interested in seeing what other Janis customers have accomplished with their probe stations? Click here to see a list of some of their research papers. Click here for a presentation on Janis probe stations with a selection of applications and reference papers from a few of our probe station customers.

Request a Quote

Please click here to download the probe station requirement questionnaire (59 KB). Since we have many different options for our probe stations, fill the questionnaire out and email it to Janis.

Janis

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