Colloquium APC

NIKA and NIKA2: from the pathfinder KID camera to the ultimate mm-wave imaging/polarimetry at the 30-meters Pico Veleta telescope

After a quick introduction to the KID (Kinetic Inductance Detectors) basic principles, I will describe the development of the NIKA (Néel IRAM KID Arrays) instrument. NIKA, operating simultaneously at 150 and 250 GHz and covering a 2 arc-min field-of-view, has been the pathfinder for the KID technology during the period 2009 to 2014. In particular, it has been the first kinetic inductance camera ever on the sky (2009), and the first opened to the astronomers via competitive calls (2013).

The DAMIC experiment: searching for WIMPs and beyond with CCDs

The DAMIC experiment employs the bulk silicon of ~mm-thick charge-coupled devices (CCDs) for direct detection of dark matter particles. This novel technique features an unprecedentedly low threshold for nuclear and electron recoils (down to a single electron of charge), providing optimal sensitivity for low-mass dark matter particles (< 10 GeV). In addition, the spatial resolution of the CCDs, unique amongst dark matter detectors, results in powerful methods to identify and mitigate environmental and cosmogenic backgrounds.

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