On December 11th, 2008, the Starcheck stood on a linear translational stage, with4.4 cm extra built up and 10cm backscattering. The irradiation performed was 6MV beam wedge field 20x20cm. 21 measurements at 300MU were performed, at 1 cm apart. Direction of travel was along the gun-target direction, as the purpose of this experiment was not to produce a map of the wedge field, but rather to examine the uniformity of Starcheck chambers. Relative accuracy of 1% was quoted for Starcheck, but no verification has been done so far. This will be the first test.
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