  The first integrated implosion experiment of three-axis cylindrical hohlraum
(TACH) was accomplished at the SGIII laser facility. 24 laser beams of the
SGIII laser facility were carefully chosen and quasi-symmetrically injected
into the TACH, in which a highly symmetric radiation filed was generated with a
peak radiation temperature of ~190eV. Driven by the radiation field, the
neutron yield of a deuterium gas filled capsule reached ~1e9, and the
corresponding yield over clean (YOC) was ~40% for a convergence ratio (Cr) of
~17. The X-ray self-emission image of imploded capsule cores was nearly round,
and the backscatter fraction of laser beams was less than 1.25%. This
experiment preliminarily demonstrated the major performance of TACH, such as
the robustness of symmetry, and a laser plasma instability (LPI) behavior
similar to that of the outer ring of traditional cylindrical hohlraum.
