IC256-45 - 256 Strip QC Ion Chamber

The largest ionization chamber available. Ideal for beam position readback at isocenter. Sized to fit the entire scanning field without having to reposition. This unique feature enables operators to calibrate or validate beam positions in a scanning system without complex rigs that are prone to error.

The IC256-45 has already been used at the McLaren Proton Therapy Center to validate their pencil beam scanning system. If you are interested in trying out the system contact Pyramid's engineering and sales team to discuss your project's requirements. Rental systems are available for short-term trials and experiments.


  • Large 45 cm by 45 cm sensing area
  • Alignment marks on beam entrance window for accurate optical setup at isocenter
  • Can be imaged by X-ray patient imager for accurate alignment to patient coordinate system
  • Lightweight and robust
  • 256 1.75 mm strips in each axis
  • Robust carbon-fiber windows and precision photo-etched readout electrodes on thin FR4 substrates for low-scattering
  • High voltage sense loopback


  • Particle therapy spot position calibration
  • Particle therapy system commissioning
  • Particle therapy system QA
  • High energy ion beam diagnostics
Isocenter Rail IC64-6 BC-75

Isocenter Diagnostics Equipment

Our isocenter equipment line expands the capabilities of medical and research institutions by catering to underserved applications and addressing intricate use cases. By providing modular and integrated solutions customized to meet each customer's distinct requirements, we enhance their overall experience and outcomes.

Combinations of detectors and electronics combine into pre-packaged experiments and QA tools. MLFC-128, BC-75, IC64-6, PX-3, F460, I128, and the IC-101 integrate to fit your specifications.

Close Up on Strips

Strip Detectors

Strip detectors have a balance between accuracy on beam position and noise levels. Our strip detectors offer the highest resolution and lowest noise on the market.

  • Laser-machined polyimide electrode substrates
  • High geometric precision
  • Radiation hard with minimal scattering
  • Gold plated readout electrodes
IC128-25 Render


128x128 Strip Transmission Monitor Ion Chamber with Dose Plane

Hand testing IC

Expertly Built

Electrodes etched with unique laser technology. Assembled and tested by highly skilled technicians in our USA facility.

  • Rigorously tested beyond the operating range for uniformity
  • Tested with real radiation sources
  • White glove treatment from start to finish
  • Full documentation provided for each instrument
Sensor Board Closeup

Integrated Environment Sensors

Our ion chambers include integrated sensors for dynamic corrections. No need for inconvenient external instruments.

  • Humidity, temperature, and pressure sensors
  • Replaceable camber desiccant
CM100 Render


Particle Therapy Control Console

MLFC-128 Render


Multi-Layer Faraday Collector for Particle Energy Measurement



Faraday Cup Beam Collector for Particle Therapy QA and Diagnostics

IC256-45 Render


256 Strip QC Ion Chamber

IC128-25 Render


128x128 Strip Transmission Monitor Ion Chamber with Dose Plane

IC64-16 Render


64 Strip Transmission Small Gap IC for Flash Therapy

IC64-6 Render


64x64 Strip Transmission Ion Chamber

PX3 Render


120 Pixel Transmission Ion Chamber

Related Papers

Spot Position Measurement and Calibration for Pencil Beam Scanning Commissioning and QA Using a Large Area Sensor at Isocenter

Using a novel ion chamber design to help commission a new proton therapy center.