  A simple hole-type secondary scintillation structure (2 mm-hole, 5 mm-pitch,
5 mm-thickness) is introduced and its operation demonstrated in pure xenon in
the pressure range 2-10 bar. The new device, characteristically translucent,
has been manufactured through a collaboration between IGFAE and the CERN
workshop, and relies entirely on radiopure materials (acrylic and copper),
being extremely rugged in the presence of sparks, mechanically robust, and
easily scalable, yet made through a relatively simple process. With an overall
figure (at 10 bar) characterized by an energy resolution of 18.9%(FWHM) for
$^{55}$Fe x-rays, an optical gain of m$_\gamma$ = 500 ph/e, and a stable
operation at reduced fields more than twice those of some of the presently
running experiments ($E_{EL}=3$ kV/cm/bar), this family of structures seems to
show great promise for electroluminescence readouts on large scale detectors.
As argued below, further improvements have the potential of bringing the energy
resolution close to the Fano factor and increasing the optical gain.
