RectTile Tile/Fiber EMcal TestModule
Uniformity of photo-electron yeild over one tile of 4cm x 4cm x 1mm-thick
measred with β from 90Sr.
Inside of the groove, uniformity is excellent. On and near the groove,
significant deviation is observed.
Staggering the two-types of the tiles
are expected to dilute this non-uniformity.
yoshiaki.fujii@kek.jp, Apr.2,2003 at ECFA/DESY at Amsterdam