This service box is devoted to host and keep the tray
clean during transports between the assembly factory, the test facilities and
the tower integration site.
for test on stacked trays back
and after the thermal cycles the service boxes containing the trays will be
mounted in the stacked configuration, in order to perform the limited
functional (LPT) and cosmic rays tests (CPT). The trays in the upper and
bottom part of the rack will have the strips oriented in the same direction:
the two tray lots will have the strips orthogonal oriented.
scintillator layers located on the top, middle and bottom of the rack will
provide the external acquisition trigger, by means of cosmic rays.