D.I.S Germany GmbH
wien Filter CF 100

Wien filter

Wien filters are used to separate charged particle beams by the velocity of the involved species by using orthogonally superimposed magnetic and electric fields. By varying the electric field, only a certain ion species characterized by its charge-to-mass-ratio and its energy/velocity can pass the Wien filter.

The size of the entry and exit apertures and the magnetic field have an enormous effect on the resolution and the applicable mass and energy range of the used ions. Several options as well as flange sizes are available. Do not hesitate to contact us for a custom-made solution.

  • Schematic of working principle of wien filter
    Schematic of working principle of wien filter

Wien Filter CF63

933-S7-09-00006

Render of Wien Filter CF63 Low Energy / High Mass

Special features:

  • designed for ions of masses between 12 u and 200 u with energies around 300 eV
  • DN63 CF base flange
  • 4 mm aperture
  • passive cooling for power load up to 30 W

Datasheet:

933-S7-08-00002_Wien_Filter_CF63_data_sheet.pdf

Wien Filter CF100

933-S7-09-00004

WIEN FILTER, CF100, HIGH ENERGY/LOW MASS

Special features:

  • designed for hydrogen and helium ions with energies ranging from 5 keV to 30 keV
  • high transmission
  • DN100 CF base flange
  • 15 mm aperture
  • passive cooling for power load up to 30 W

Datasheet:

933-S7-08-00003_Wien_Filter_CF100_-_data_sheet.pdf

Wien Filter CF160

933-S7-09-00001

WIEN FILTER, CF160, MEDIUM ENERGY/LOW MASS

Special features:

  • designed for ions of masses between 1 u and 6 u with energies around 3 keV
  • DN160 CF base flange
  • 5 mm aperture
  • passive cooling for power load up to 30 W

Datasheet:

933-S7-08-00004_Wien_Filter_CF160_-_data_sheet.pdf

Custom Solutions

Wien filter with standard DN100 CF flanges and high voltage feedthrough.

Customized solutions

Besides our readily available Wien Filter 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 possible with active cooling solution

Mounting flange

DN63 CF up to DN160 CF or ISO-K

Feedthroughs
  • 5 kV SHV feedthroughs as standard
  • other coaxial feedthroughs available depending on customer requirements and necessary voltages

Aperture dimensions

up to 15 mm, further limitations possible depending on desired use case

Additional diagnostics

For creating charge state or mass spectrums, the use of Faraday Cups for necessary current measurements is advised. Suitable options can be found here.

In the case of insufficient beam formation even after tuning the ion source paramaters, we recommend implementing an Einzel lens. Suitable options can be found here.