Beam charge measurement
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Beam charge measurement


ICT bandwidth is set to 12 MHz. It allows to transfer the bunch charge at a slow pace.

The ICT signal can be processed by the user or can beis integrated by the BCM-IHR.

The output voltage proportional to the beam pulse charge is available 30μs after the trigger. It is maintained up to 400μs, then reset. Another pulse can then be measured.


In-flange ICT

  • In-flange ICT are mounted directly in the beam line.
  • Available for many pipe diameters from 1” to 250mm.
  • Also with elliptical aperture or other arbitrary shape aperture. Ceramic gap, shields and wall current bypass are included.
  • Bellows are not required.
  • Material AISI-304, 316LN on option
  • Bakeable up to 185°C
  • UHV compatible
In-flange ICT
In-air ICT

In-air ICT

In-air ICT installation, over the vacuum chamber requires installation of a “gap” to prevent the wall current from flowing through the ICT aperture.

The gap can be a brazed ceramic ring or an organic material O-ring depending on the vacuum requirements.

Typical installations include bellows, a wall current bypass and an electromagnetic shield enclosing the ICT completely.


BCM-IHR-E processes the signal from an ICT.
Specially developed hybrid circuits amplify the charge and integrate it with low noise and high linearity.

Output is a bipolar voltage directly proportional to the beam charge.

A built-in Calibration Generator provides on-line assurance of measurement reliability.

BCM-IHR-E inserts into a wired station of BCM-RFC, the 19” 3U RF-shielded chassis including power supplies.

Up to 10 stations per chassis can be installed.




  • In-air models: 100°C (212°F) any time
  • In-flange models: 100°C (212°F) any time, 150°C (300°F) on option, 185°C (365°F) on option

Core saturation

  • 2 mT radial field
  • 2A permanent DC current

Radiation damage

  • Standard SMA PTFE: 1E3 Gray max
  • Rad-tolerant SMA PEEK: 6E7 Gray max
  • 1E17 n/cm2 max