Multichannel detectors for profile measurements in clinical proton fields
Multipad ionization chamber detector installed at the beam isocenter.
Multilayer ionization chamber detector.
Linearity of the MPIC detector in dose rate.
MPIC calibration coefficients.
Comparison of lateral profiles in a distorted field measured with a small ion chamber in water and with the MPIC detector.
Linearity of the MLIC in dose rate.
MLIC response to dose as a function of dose rate at two bias voltages.
Comparison of depth dose profiles measured with the MLIC detector and a Markus ionization chamber in water. (a) Pristine beams with ranges of (diamonds), (open circles) and (closed circles) were measured with the MLIC; water phantom measurements are shown as solid lines. (b) A SOBP field with range measured with the MLIC and with ion chamber in water. All results are normalized at maximum dose.
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