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CR tracker production. G. Aielli for the RPC collaboration. CR traker news. The design of the carpet under the floor has been almost completed It is inheriting the R&D for a new series of chambers to be installed in ATLAS All materials available for construction
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CR tracker production G. Aielli for the RPC collaboration
CR traker news • The design of the carpet under the floor has been almost completed • It is inheriting the R&D for a new series of chambers to be installed in ATLAS • All materials available for construction • Order ready to be placed to the factory • Will be produced in tail to the ATLAS chambers • Still open option about reading from only one of the short sides • Front End electronic boards have been reserved for this chamber and are under test in Roma • The delivery of the chamber should be for the autumn. Need to avoid clash with the Atlas production which is time critical due to the tight installation schedule • AIDA installation schedule, in particular for the floor?
Detailed layout: Bottom Tracker • Trigger and high time resolution: • One chamber 1x0.5 m2 as for the top tracker: strips: 16 + 32 = 48 • Fine tracking: 1 chamber 30x30 cm2 as in the previous point. # strips: 64 (60 E/channel) • Underground detector • One doublet chambers: size 2.8 x 2.4 (=2x1.2) m2 (two chambers; bi-dimensional read out) • Longitudinal (eta) strip pitch (mm)37 # total number of eta channels 128 • Transevresal(phi) strip pitch (mm)29 #total number of phi channels 384 Fine tracker Y-Z readout Iron shielding 30 cm 50 cm Concrete 30 cm 100 cm Concrete 240 cm 280 cm
Carpet production parameters book 2800 1200
Chamber design Phi view Eta view
Conclusions • Ready for production of the CR carpet under floor • When is reasonable to transport the detector to CERN? • Can we check the schedule for the installation or in alternative a storage at CERN? • Not before the autumn 2013 • Next steps will concern the ceiling tracker which production is scheduled early 2014