Machine QA
Virtual Water™ Phantom True Water-Equivalent Material
Ideal alternative to traditional water tanks for performing routine QA checks of a linear accelerator using photon or electron beams.
Virtual Water™ Phantom Download:
Virtual Water™ Phantom Overview
Tested and Calibrated: Each batch of Virtual Water™ is tested at an independent calibration lab and verified to be within 0.5% of water at photon energies.
Slabs from this unique material are exceptionally strong and will not stick together when stacked or stored. It's not affected by changes in humidity or temperature and does not exhibit charge storage effects, a problem common in other water-equivalent materials.
Setting the Standard in Water-Equivalency: Slabs are made from water-equivalent material, and are developed to be free of contaminants and air.
Virtual Water Specifications
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Mass Density (g/cm3)1.04 g/cm3
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Electron Density (e-/cm3NA)0.557 +/- 0.001
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Virtual Water/ Water Electron Density Ratio1.000 +/- 0.005
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Depth Ionization Relative-to-Water- Photons1.000 +/- 0.005
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Depth Ionization Relative-to-Water- Electrons1.000 +/- 0.005
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Water EquivalencyPhoton & Electron Range -0.5%
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Batch Consistency+/- 0.02% Measured
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Thickness Tolerance+/- 0.15 mm (0.006 in)
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Length and Width Tolerance+/- 0.5 mm (0.02 in)
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Flatness0.2 mm (0.008 in)
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Sizes Available20 cm, 30 cm, 40 cm (Standard)
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Thicknesses Available0.1 cm, 0.2 cm, 0.3 cm, 0.4 cm, 0.5 cm, 1.0 cm, 2.0 cm, 3.0 cm, 4.0 cm, 5.0 cm, 6.0 cm (Standard)
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Other OptionsMilled for Parallel Plate Chamber or Drilled Cavity for Ion Chamber
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Specifications MaterialEpoxy resins and powders to control density and radiation properties.