A GEM Detector System for an Upgrade of the CMS Muon Endcaps

8 Schedule and milestones toward GE1/1 and 2/1 installation in LS2
The overall schedule for the production of two stations GE1/1 and GE2/1 is presented (next page) as a function of
months and years from the approval of the construction project. It is assumed that the production of GEM foils
will take place at CERN in the surface treatment workshop, as explained in Sect. 5.4.
The two stations will be launched as soon as the project is approved and it is estimated that assembly tests and
quality control procedures will be completed in two years per station. We will have two assembly lines in the new
workshop and the TIF. Detector tests with final electronics will be done after the delivery of the final electronics in
a final stage before installation in LS2.
Distributing the detector assembly in different sites and institutions to optimize time and resources has been considered.
Detailed plan of sharing the tasks will be made after project approval.
The major milestones are shown in Table 17.
Table 17: Summary of milestones.
Milestones Activities Time (months) Time (years)
Milestone 1 Baseline detector validation 11 0.9
Milestone 2 Construction of 36 GE1/1 SuperChambers (SC) 28 2.3
Milestone 3 Construction of 36 GE2/1 SuperChambers (SC) 32 2.7
Milestone 4 VFAT final validation 24 2
Milestone 5 Board production 19 1.6
Milestone 6 Assembly and QC 28 2.3
Milestone 7 Final QC 27 2.3
Milestone 8 Installation 40 3.3
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