CAST microbulk micromegas in the Canfranc Underground Laboratory

A. Tomás, S. Aune, T. Dafni +19

During the last taking data campaigns of the CAST experiment, the micromegas detectors have achieved background levels of $\approx 5\times 10^{-6}$keV${}^{-1}$cm${}^{-2}$s${}^{-1}$ betw…