  Thermal non-equilibrium (TNE) is a phenomenon that can occur in solar coronal
loops when the heating is quasi-constant and highly-stratified. Under such
heating conditions, coronal loops undergo cycles of evaporation and
condensation. The recent observations of ubiquitous long-period intensity
pulsations in coronal loops and their relationship with coronal rain have
demonstrated that understanding the characteristics of TNE cycles is an
essential step in constraining the circulation of mass and energy in the
corona. We report unique observations with the Solar Dynamics Observatory (SDO)
and the Swedish 1-m Solar Telescope (SST) that link the captured thermal
properties across the extreme spatiotemporal scales covered by TNE processes.
Within the same coronal loop bundle, we captured 6 hr period coronal intensity
pulsations in SDO/AIA and coronal rain observed off-limb in the chromospheric
Halpha and Ca II K spectral lines with SST/CRISP and SST/CHROMIS. We combined a
multi-thermal analysis of the cycles with AIA and an extensive spectral
characterisation of the rain clumps with the SST. We find clear evidence of
evaporation-condensation cycles in the corona which are linked with periodic
coronal rain showers. The high-resolution spectroscopic instruments at the SST
reveal the fine-structured rain strands and allow us to probe the cooling phase
of one of the cycles down to chromospheric temperatures. These observations
reinforce the link between long-period intensity pulsations and coronal rain.
They also demonstrate the capability of TNE to shape the dynamics of active
regions on the large scales as well as on the smallest scales currently
resolvable.
