PinPoint 3D Chamber

Model/Serial: 31016-83 (purchased: 2006)
Model/Serial: 31016-84 (purchased: 2006, defective: 2011)
Model/Serial: 31016-620 (purchased: 2011)

Description: Ionization chamber 0.016 cm3. We use this detector for relative dosimetry in the water phantom (profiles, depth dose curves). E.g., TrueBeam depth dose curves (Eclipse beam data) for field sizes < 4x4 cm (10FFF: < 12x12 cm) were measured with this detector.

Logbook

Date Event
30.03.2006 S/N 83 initial calibration by PTW: ND,W = 2.462E+09 Gy/C (U = 2.1%).
30.03.2006 S/N 84 initial calibration by PTW: ND,W = 2.426E+09 Gy/C (U = 2.1%).
14.04.2011 S/N 83 destroyed during operation.
01.08.2011 Received S/N 620. Initial calibration by PTW: ND,W = 2.501E+09 Gy/C (U = 1.1%).

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