Merge pull request #51 from Crauzerus/extended_source_desc

Readme for t17

Author: tbaudier

t17_extended_source/readme.md

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+# Benchmark for ExtendedVSource
+
+Runs 4 simulations for 4 different decays:
+
+* pPs --> 2 gammas
+* pPs* --> 2 gammas + prompt gamma
+* oPs --> 3 gammas
+* oPs* --> 3gammas + prompt gamma
+
+where pPs is para-positronium, oPs is ortho-positronium, prompt gamma is deexcitation gamma.
+
+We simulate a point source with spherical detector.
+
+The test compares reference energy deposition distributions with ones generated during simulations and validates them by using the two-sample Kolmogorov-Smirnov test.
+
+Null hypothesis is that two two distributions are identical with p-value threshold equals 0.05 (5%).
+
+Additionally, if data contains signals from other particles test fails because we do not expect them to be present for given macros.