Fig. 10: Stability over time of the calibration peaks in the region of interest for the nine ANAIS–112 detectors. | Communications Physics

Fig. 10: Stability over time of the calibration peaks in the region of interest for the nine ANAIS–112 detectors.

From: ANAIS–112 three years data: a sensitive model independent negative test of the DAMA/LIBRA dark matter signal

Fig. 10

Upper panels, in orange: Evolution of the mean energy of the fitted 0.90 keV peak from 22Na along the first five years of data taking for the nine ANAIS–112 modules. Lower panels, in green: the same, but for the 3.2 keV peak from 40K. Error bars represent the standard deviation of the mean value. The dashed lines are the mean values of the peak positions in each detector, and the shaded regions represent the standard deviations of the peak positions. The mean value and the standard deviation for each module are also shown in the panels.

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