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

Table 12: Estimated costs of the off-detector electronics components for a 30 ◦ sector equipped with single GEM
chambers.
Element No. of elements Cost per 30◦ sector Single Chamber (CHF)
GLIB/AMC 12 30000
µTCA crate 4 24800
Optical Link between crates 5 360
Total 55160
Table 13: Estimated costs of the off-detector electronics components for a 30 ◦ sector equipped super chambers.
Element No. of elements Cost per 30 ◦ sector Single Chamber (CHF)
GLIB/AMC 15 37500
µTCA crate 4 24800
Optical Link between crates 5 360
Total 62660
6.6.3 GE1/1 system cost estimate (on and off-detector)
The GE1/1 system is comprised of an 36 super chambers in one ring per endcap. For the two end caps there will
be two rings hence a total of 72 super chambers for the on-detector part. Table 14 shows the estimated cost of the
GE1/1 system in both endcaps. The cost of the power supplies is also included assuming one super chamber is fed
with separate channels of low and high voltage for each side of the super chamber.
Table 14: Estimated costs of the electronics components for a super chamber.
Element No. of elements GE1/1
72 super chambers
(36 in each endcap) (CHF)
GdSP/VFAT3 4320 298080
DC/DC reg. 1008 91008
GBT 432 43200
Optical Link 432 31104
Cables 144 144000
Power supplies 144 HV & LV ch. 405162
On-detector total 1082538
At the time of writing the GE2/1 system segmentation is still to be defined so the on-detector electronics cost for
GE2/1 cannot be done at present. The off-detector electronics however combines data from GE1/1 and GE2/1
together. For this reason provision has been made for including data from GE2/1 in the off-detector electronics
design cost estimate. Table 15 shows the cost estimate of the off detetor electronics components assuming 72 super
chambers for the GE1/1 and making provision for links form GE2/1.
Table 15: Estimated costs of the electronics components for a super chamber.
Element No. of elements GE1/1
72 super chambers
(36 in each endcap) (CHF)
GLIB/AMC 360 900000
µTCA crate 96 595200
Optical Link between crates 120 8640
Off-detector total 1503840
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