This is a close-up view of the bottom of the endcap electromagnetic
calorimeter prototype detector box. Visible in the picture are the
stands that tilt the detector box by approximately 10 degrees downstream
of a vertical plane. The tilt is to partially compensate for the projective
geometry of the calorimeter towers, so that the showers produced by
the incident electrons are more fully contained within a single tower.
Visible at the bottom of the detector box are the six optical connectors,
carrying scintillation light from the 60 vertical triangular strip
detectors comprising the shower-maximum detector "x-plane". Also
visible in the picture are the rails and bearings forming part of
the remotely controlled translation of the 1200 pound prototype detector
in the horizontal direction.