128 Channel Charge Integrator

The I128 is Pyramid's flagship dosimeter instrument. It enables our scanning nozzle to deliver unparalleled precision and speed.


  • 128 parallel charge integrating channels
  • 1 gated integrator channel for dose plane
  • 1 trigger input and trigger pass-through
  • 1 fiber-optic pulse output proportional to dose plane
  • 1 fiber-optic output for beam control
  • 1 high voltage supply output with loop-back verification
  • Safety relay output
  • Ion chamber temperature, pressure, and humidity sensor inputs
  • Fiber-optic loop control handling many Pyramid slave devices
  • Capable of executing and verifying pencil beam treatment plans
  • Integrated precision current sources for on demand calibration
  • 10kHz buffered data available over Ethernet RPC connection
  • Compact 1U 19" format


  • Paired with an IC128-25
  • Particle therapy beam position measurement and dosimeter
  • Multi-strip ionization chamber measurement
  • Particle range verification measurement
  • General high desnity low-current measurement

Proton Therapy

Proton therapy is well established for the treatment of localized cancer tumors, especially when there are vital organs close by. This healthy tissue sparing makes it the method of choice for maintaining quality of life and especially for treating children. The proton beam delivery is fast and painless.

Proton therapy centers worldwide use Pyramid sensors, electronics, and software. Pyramid offers products for complete systems, sub-systems, or components. For more information see our Pencil Beam Scanning Brochure

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