ATLAS Tracker Upgrade - Services at Barrel Ends:

1
ATLAS Tracker Upgrade - Services at Barrel Ends
Scenario where services are routed through
existing services channels on cryostat shown on
the next 3 slides ie Old TRT channels used for
fibres, power and sensor cables and input cooling
pipes Old SCT cooling exhaust channels used for
same purpose in the Upgrade Could possibly work
for 108 supermodules (with lots of manifolding
for cooling pipes) Wouldnt work if outer barrels
were included these would need to use existing
power cable channels but there would be no space
in the existing cooling exhaust channels, so
new channels eg one per quadrant would have to be
created in order to keep each set together for
maximum cooling efficiency. Design of layout on
the cryostat is crucial to the design of the
layout on the barrel ends!
2
7
7
rows per Quadrant
6 exhaust pipes to old cooling channel
in cryostat
exhaust manifold
11
6
9
input pipes in TRT channels (need manifolds)
5
7
4
7
Evap. cooling routing off barrel end.
5
6
4
input exhaust exhaust manifold
3
45.0
22.5
3
11.25
half length cooling loops
TJF 28/06/07
3
rows per Quadrant
exhaust cooling only
11
9
power and sensor cables go in old TRT channels
7
power and sensor cables in 4 dedicated channels
per quadrant shown as one bunch per supermodule
45.0
22.5
11.25
TJF 28/06/07
4
exhaust cooling only
rows per Quadrant
11
9
power, sensor cables, fibres and input pipes go
in old TRT channels
7
single fibres
ribbon
optofibre routing one fibre from each PCB
joins one 12 way ribbon 9 ribbons per quadrant
45.0
22.5
11.25
four PCBs per supermodule
TJF 18/07/07