G.Sirri – INFN Bologna Videoconf Gluing machine New solution under test: rigid plastic frame instead of lateral tapes and spacer.  Simpler handling (less rejection)  Accurate positioning of the corner without not easy setup (test in progress),  Production rate higher. No precise cutting tool required.  Plastic frames provided by external manufacturer. estimated cost : frame 4.5 euro/brick, tape 15 euro/brick [+1.5 euro/brick] estimated time : 25 minutes brick/ 1 person [-15 minutes/brick] Plastic frame

G.Sirri – INFN Bologna Videoconf New plate with holes  Within this R&D on Edge Scanning and Distortion Study, severel prototypes of vacuum plates with holes were realized.  New prototypes delivered. Vacuum good. Distortion measurements in progress. 2/7

G.Sirri – INFN Bologna Videoconf Spares

G.Sirri – INFN Bologna Videoconf spacer lateral tape Tape and Spacer Specifications OLD Tests performed using : - acrylic adhesive tapes: Nitto model 31C and model 3161F (80 µm thickness, 140 mm width) - spacers and lateral tapes: PVC (300 µm thickness) Nitto tapes are suitable for our purpose. Tests of (more) rigid spacer and/or lateral tapes are in progress.

G.Sirri – INFN Bologna Videoconf Costs and operational times OLD  Acrylic adhesive tape: 60 euro/roll (140 mm x 50 m) [order ~ 50 rolls] 1 brick ~ 12 m  4 bricks/roll  15 euro/brick  PVC tape: 3.5 euro/roll (20 mm x 50 m) 0.04 euro/spacer  3 euro/brick Expected operational time to glue 1 brick (1 person) : strip preparation: ~ 10 min gluing machine: ~ 10 min (manual) cutting: ~ 20 min

G.Sirri – INFN Bologna Videoconf A. "Both exchangers can handle only glued emulsions.“ -> All bricks glued. => modifications for ALL exchangers of one family. B. "The exchanger [A] can handle only glued emulsion. The exchanger [B] can work in glued/not glued mode." -> Glue for [A]. No glue for [B]. Events at the border or pathological cases with the same gluing. => modifications for a few exchangers of the type [B]. Bricks already measured with [B] will be glued for remeasurement with [A] Bricks already measured with [A] can be measured with the modified exchangers of [B] C. "Both exchangers can work in glued/unglued mode." -> No glue for the majority of the bricks. Events at the border or pathological cases with 2 different gluing. => modifications for a few exchangers of the type [B]. 6/7 2 exchanger families: [A] and [B] / same GLUING