Mg coatings
with the purpose to be used as photocathode in bright electron sources
have been produced. We report the results of Quantum Efficiency (QE)
test on Mg films obtained by Pulsed Laser Ablation Deposition (PLAD)
and by sputtering technique on various substrates. By comparison with
other deposition techniques, PLAD offers unique possibilities for the
synthesis of adherent and uniform films. Morphological changes of the
films during the laser cleaning and QE measurements have been investigated
by SEM analysis. Measurements of the distribution and integrated value
of Quantum Efficiency over the illuminated surface will be reported.
Moreover, a special set-up for Mg deposition on the back flange of an
RF gun will be also presented.