a) Frequency sweep of the array, with each dip corresponding to a different MKID pixel. The response in the figure is relative to a calibration performed at 0.8 K, which effectively removes a ~3 dB ripple due to the setup cabling. b) Zoom of a section of panel a), showing the relative bandwidth of the resonators and the scatter in frequency of the resonators, mainly due to thickness variations in the NbTiN.
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