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:

Download Virtual Water Datasheet

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

Mass Density (g/cm3)

1.04 g/cm3
Electron Density (e-/cm3NA)

0.557 +/- 0.001
Virtual Water/ Water Electron Density Ratio

1.000 +/- 0.005
Depth Ionization Relative-to-Water- Photons

1.000 +/- 0.005
Depth Ionization Relative-to-Water- Electrons

1.000 +/- 0.005
Water Equivalency

Photon & Electron Range -0.5%
Batch Consistency

+/- 0.02% Measured
Thickness Tolerance

+/- 0.15 mm (0.006 in)
Length and Width Tolerance

+/- 0.5 mm (0.02 in)
Flatness

0.2 mm (0.008 in)
Sizes Available

20 cm, 30 cm, 40 cm (Standard)
Thicknesses Available

0.1 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)
Other Options

Milled for Parallel Plate Chamber or Drilled Cavity for Ion Chamber
Specifications Material

Epoxy resins and powders to control density and radiation properties.