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Faraday Cup Collectors

Directly measure proton beam intensity up to FLASH dose-rate levels and beyond, with minimal beam energy dependence and no effect from atmospheric temperature or pressure.

FAQ FLASH Further Reading

Faraday Cup Collectors

Absolute beam current sensors immune to temperature and pressure drift

MLFC-128
MLFC-128
Multi-Layer Faraday Collector for Particle Energy Measurement
BC-145
BC-145
Large Faraday Cup Collector for Scanned Beam Particle Therapy QA
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BC-75
Faraday Cup Beam Collector for Particle Therapy QA and Diagnostics

Frequently Asked Questions

What is a Faraday cup collector, and how does it measure beam intensity?
A Faraday cup is a conductive collector that physically captures a charged particle beam; the resulting current is directly proportional to the beam's intensity, giving a direct, absolute measurement rather than an inferred one.
What does "minimal beam energy dependence" mean, and why does it matter?
It means the measurement stays accurate across a range of beam energies rather than needing separate calibration at each energy level, which is important for facilities that operate across varying beam conditions.
Are Pyramid's Faraday cups suitable for FLASH radiotherapy applications?
Yes. They're designed to directly measure proton beam intensity up to FLASH dose-rate levels and beyond.
Why are Faraday cups unaffected by atmospheric temperature and pressure, unlike some other detectors?
Because they measure beam current through direct charge collection on a conductor rather than through gas ionization, their reading isn't influenced by the density changes that affect gas-filled detectors like ion chambers under varying temperature and pressure.

Further Reading

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