The WArP Experiment: A Double-Phase Argon Detector for Dark Matter Searches
Figure 11
(a) Distribution of real events positions in the plane, where is the distance from the liquid level and is the reconstructed radial coordinate, as derived from information. The truncated-cone shape of the detector is well reproduced (upside-down in this view): the real slope, , is to be compared with the one fitted from the data, . Denser regions correspond once again to the radial positions of the photomultipliers. (b) Distribution of events wrongly reconstructed outside the detector walls, as a function of their distance from the walls (details in text).
