Electron beam spot on phosphor screen
Phosphor screens on various mounts
FC-71 stand-alone faraday cup
Kimball Physics designs and manufactures two types of particle detectors: Faraday cups and phosphor screens.
The basic Faraday cups are stand alone units with no moving parts and are intended to be mounted in the vacuum system. A number of different types of mechanically or pneumatically actuated Faraday cups are available; most of these mount directly on the housing of electron guns, for direct sampling of the beam.
Faraday cup options:
- Phosphor screen around entrance aperture
- User-changeable apertures
- Energy analyzing grids
- Biased cups (collector cup floated away from ground)
- Water cooling
- Array of cups
Phosphor screens are made of high luminosity P-22 phosphor (ZnS:Ag). The screens are sensitive to electrons starting at approximately 500 eV with a threshold of 1 x 120-7 A/cm2.
Phosphor screen options:
- UHV screens
- Rugged screens
- RHEED screens
To compare products, see the Product Selection/Price Chart.
To learn more, see Technical Information.