  Using high speed imaging of the divertor volume, the region close to the
X-point in MAST is shown to be quiescent. This is confirmed by three different
analysis techniques and the quiescent X-point region (QXR) spans from the
separatrix to the 1.02 flux surface. Local reductions to the atomic density and
effects associated with the camera viewing geometry are ruled out as causes of
the QXR, leaving quiescence in the local plasma conditions as being the most
likely cause. The QXR is found to be ubiquitous across a significant
operational space in MAST including L-mode and H-mode discharges across wide
ranges of line averaged density, plasma current and NBI power. When mapped to
the divertor target the QXR occupies approximately an e-folding length of the
heat-flux profile, containing approximately 60% of the total heat flux to the
target, and also shows a tendency towards higher frequency shorter lived
fluctuations in the ion-saturation current. This is consistent with short-
lived divertor localised filamentary structures observed further down the outer
divertor leg in the camera images, and suggests a complex multi-region picture
of filamentary transport in the divertor.
