OT HV Distribution
Connections in D3 - Power Supply to PP
The 48 long-distance multi-wire cables (48 = 12 Cframes x 4 cables/Cframe)
from the
Patch Panels (PP)
in the counting house D3 to the C-frames are connected to the HV power supplies
by means of two junction boxes, one per detector side, located in
the racks D3-D03 ("A" side) and D3-D03 ("C" side). A schematic overview of
this routing is shown in the
figure below.
In practice four HV output units per detector side are connected,
via the junction box, to the three patch panels for the three half-stations
T1-Q13, T2-Q13 and T3-Q13
(resp. T1-Q02, T2-Q02 and T3-Q02),
as shown schematically in the
figure below.
The junction box couples the 28-lines multi-pole connectors of the
output units of the HV power supplies to the 52-lines input of the
HV Patch Panels.
The effective mapping between the 28 output channels of each HV output
units and the 36 inputs of each patch panels realized through the
junction boxes is summarized in the
figure below
(also available in
Autocad .dwg).
The overall mapping of channels from the HV power supplies to the
HV Patch Panels
taking place as a result of the re-grouping and mapping taking place in the
patch panels and in the junction box is shown in its full glory in the
figure below
(also available in
Autocad .dwg).
