Stationary Water Phantom

Klicken um Bild zu vergrößernStationary water phantom

Completely closed stationary water phantom for high energy photon dosimetry with PTW Farmer chambers

  • Makes it possible to perform quick and reproducible photon calibration measurements
  • Accommodates a PTW Farmer chamber at a fixed measuring depth of
    50 mm
  • Beam markers on the top plate
  • Compensates changes of the water volume caused by ambient temperature changes

The phantom T41014 is a stationary water phantom for absolute dosimetry and calibration measurements in radiation therapy. It is completely covered by acrylic (PMMA) plates. The external dimensions are approximately 20 cm x 20 cm x 10 cm. The entrance wall thickness is 3 mm, the measuring depth 50 mm. PTW Farmer ionization chambers fit exactly into the built-in chamber holder. The top plate features markers for beam adjustment. The phantom is filled with approximately
4 liters of water through a sealed fill plug. It is fitted with two elastic expansion vessels to adapt the phantom to different ambient temperatures and to ensure a constant measuring depth.