Faraday cups are used for measuring electrical currents of charged particle beams in real time in broad pressure ranges, down to ultra-high vacuum conditions.
The Faraday cup is equipped with a suppressor electrode for compensation of secondary electron emission.
They can be used for currents of fA up to mA at beam power loads of up to 30 W.
|category||charged particle beam diagnostics|
|measured quantity||charged particle beam charge/current|
|maximum beam power||up to 30 W with passive cooling;
higher beam power possible with active cooling
|current measurement range||fA up to mA|
|pressure operating range||down to 1·10-10 mbar|
|mounting flange||fixed: DN63 CF or larger, other flanges on request;
movable: DN40 CF or larger, other flanges on request
|aperture dimensions||1 mm up to 30 mm|
|maximum bakeout temperature||150 °C|
|approx. box size (length x width x height)||260 mm x 152 mm x 460 mm (DN100 CF flange)|
fixed installation or solutions with a linear feedthrough featuring manual or motorized positioning systems
apertures with different diameters (standard up to 30 mm or upon customer request)
all beam-stressed Faraday cup parts (i.e. aperture, detector etc.) can be made of highly sputter resistant materials (e.g. tungsten, molybdenum) for use with heavy or highly energetic ions
electrical feedthroughs for all signals and voltages (standard BNC connectors, alternative electric feedthroughs are possible)
control and measurement software
Optional supplementing devices
power supply for the suppressor voltage
current measurement device for ion beam currents of fA up to mA
active cooling system for higher thermal loads
further customization possible