Dose Course 2018_Flipping book

Cable leakage in a PinPoint chamber

Normally, the signal from stem and cable irradiation is small enough (< 1 pC/(Gy·cm)) to be neglected, but the small air volume yields a low detector signal level…

Scan direction

Scan direction

125 mm 3 air ion chamber

15 mm 3 Pinpoint chamber

0.4 pC/(Gy·cm)

0.2 pC/(Gy·cm)

at 10 cm depth

at 10 cm depth

Agostinelli et al [21]