由33个RW3平板组成，叠厚30cm
材质： RW3等效水
维度：300×300mm， 33 块平板 (29×10mm, 1×5mm, 2×2mm,1×1mm厚)
The solid plate phantoms SP33 and SP34 are suitable for quality assurance dosimetry measurements in photon and electron beams,
based on the relation between ionization chamber reading in plastic and water in the user beam with different types of ionization chambers.
The plate phantoms consist of 1 plate of 1 mm thickness, 2 plates of 2 mm, 1 plate of 5 mm and 29 plates of 10 mm. Adapter plates for various detectors are available for both phantoms.
The SP33 is made of PMMA. The SP34 is made of white polystyrene, type RW3.
德国IBA SP34固体水模参数选型表：
德国IBA SP34固体水模