D.I.S Germany GmbH
Faraday cup

Faraday Cups

Faraday cups are used for measuring the electrical current of a charged particle beams in real time and independent of the pressure. Our systems are suitable down to ultra-high vacuum conditions. They can be used for measuring the electrical current of an electron or ion beam in the range of fA and pA up to mA and are suitable for beam power loads of up to 200 W and beyond. A suppressor electrode is built in by standard for compensating the secondary electron emission, increasing the measurement precision in the process.

  • Fig. 1: Schematic view of a Faraday cup
    Fig. 1: Schematic view of a Faraday cup
  • Fig. 2: Schematic view of a Faraday cup with a suppressor electrode
    Fig. 2: Schematic view of a Faraday cup with a suppressor electrode

Faraday Cup, CF63, passive cooled, inline

931-S7-09-00006

CF63-passive-inline
CF63-passive-inline

Special Features:                                                                      

  • fixed inline installation
  • CF63 base flange
  • exchangeable apertures with diameters ranging from0.5mm
    up to 5mm
  • triaxial wiring and feedthrough for the Faraday cup detector
    for low noise measurements
  • passive cooling for power loads up to 3W

Optional Supplementing Devices:

  • power supply for the suppressor voltage
  • current measurement device for beam currents of fA up
    to mA
  • additional apertures

Datasheet:

931-S7-08-00002_Faraday_Cup_CF63_inline_-_data_sheet.pdf

Faraday Cup, CF63, water cooled, pneumatic 100 mm, up to 60 W

931-S7-09-00011

931-S7-09-00011-A-01 - Faraday Cup, CF63 Water cooled
931-S7-09-00011-A-01 - Faraday Cup, CF63 Water cooled

Special Features:                                                                      

  • designed for electrons up to 8MeV
  • water cooling for power load up to 60W and temperature below 60°C in extreme UHV environment
  • retractable installation on pneumatic linear feedthrough with 100 mm retraction length
  • DN63 CF base flange
  • 25mm aperture
  • coaxial wiring and feedthrough
  • suppressor electrode for secondary particle suppression

Optional Supplementing Devices:

  • power supply for the suppressor voltage
  • current measurement device for beam currents of fA up
    to mA
  • additional apertures

Datasheet:

931-S7-08-00003_Faraday_Cup_CF63_water_cooled_-_data_sheet.pdf

Faraday Cup, CF63, water cooled, motorized 250 mm, up to 200 W

931-S7-09-00015

931-S7-09-00015-B-01 - Faraday Cup, CF63-250mm Water cooled
931-S7-09-00015-B-01 - Faraday Cup, CF63-250mm Water cooled

Special Features:                                                                      

  • designed for beam scanning application of ion beams
  • water cooling for power load up to 200W
  • retractable installation on motorized linear feedthrough with 250 mm retraction length
  • DN63 CF base flange
  • 25mm aperture
  • coaxial wiring and feedthrough
  • suppressor electrode for secondary particle suppression

Optional Supplementing Devices:

  • power supply for the suppressor voltage
  • current measurement device for beam currents of fA up
    to mA
  • control device for motorized cup positioning
  • additional apertures

Datasheet:

931-S7-08-00004_Faraday_Cup_CF63_motor-retractable_water_cooled_-_data_sheet.pdf

Faraday Cup, CF100, convective cooled, motorized

931-S7-09-00002

Faraday cup option with motorized linear feedthrough.

Special Features:                                                                      

  • designed for ions up to 50keV and beyond
  • passive cooling for power load up to 60W
  • retractable installation on motorized linear feedthrough with 75 mm retraction length
  • DN100 CF base flange
  • 30mm aperture, larger on request
  • coaxial wiring and feedthrough
  • suppressor electrode for secondary particle suppression

Optional Supplementing Devices:

  • power supply for the suppressor voltage
  • current measurement device for beam currents of fA up
    to mA
  • additional apertures

Datasheet:

Available soon.

Custom Solutions

Labeled Faraday cup option with motorized linear feedthrough. Manual or fixed solutions are possible as well.

Customized solutions:                                                                      

Besides our readily available Faraday cup versions, we also offer development of customer specific solutions with fixed, manual or motorized positioning. The following paramaters can be modified to perfectly suit your specific requirements:

Maximum beam power
  • up to 30 W with passive cooling
  • higher beam power of 200 W and beyond possible with active cooling solution

Low noise current measurement

triaxial or coaxial wiring & feedthrough

Special material selection

for UHV compatibility, thermal conductivity, or sputter resistivity

Mounting flange

DN40 CF up to DN150 CF or ISO-K

Cup shape & dimension

Cylindrical, conical

Aperture dimensions

0.1 mm up to 100 mm, dimensions on customer request