Ionization chamber controller for proton therapy



  • 128 parallel integrator channels for strip or wire readout
  • Independent dose plane readout with multirange precision I-V converter
  • External trigger input and trigger passthrough
  • Dose target, dose accumulation and beam control
  • Monitor pulse output
  • Integrated digitization and calibration using built-in precision current sources
  • Fast Ethernet connection and internal buffering allows contiguous data at high rates
  • Integrated HV supply with loopback verification
  • Integrated ionization chamber environmental sensor readout
  • Integrated pneumatic actuator control
  • On-board processors for real time beam position and shape verification, dose control and map execution
  • Integrated dosimetry safety features including fast and safety interlock relays
  • Communication channels to other controllers and accelerator control interface
  • Fiber optic fast beam control, respiration gate and monitor lines
  • Control inputs and outputs fiber optic or isolated for maximum EM noise immunity


  • Particle therapy beam position measurement and dosimetry
  • Multistrip ionization chamber readout
  • General multichannel low-current measurement applications


Datasheet: I128r5_DS_191202.pdf 

User manual: I128r5_UM_190923.pdf 

2D drawing: I128r5.dxf 

3D drawing: I128r5.step 

Integrated firmware package: