OT HV Distribution
C-Frames
The nine (9) Front-End boxes of each of the
four quarters
of a
C-Frames
are grouped onto a multi-wire (56) cable by means
of a
"junction box".
This is shown schematically for one quadrant in the
figure below
(also available in
Autocad).
The details of the wire assignment on the multi-wire cable are shown in the
figure below.
Each multi-wire cable from a junction box is patched in HV section of
the C-frame patch panel, as shown in the
figure below.
The HV cabling has been done during the C-Frame pre-assembly at NIKHEF; the
junction box itself as well as most of the cable length has been stored between
the plates of the
C-Frame.
Therefore, the HV interface of a C-Frame consists of 4 x (9 x 4) coaxial cables
with SHV connectors at the side of the FE boxes and of
four (4 = 2 quadrants x 2 layers) HV inputs with four multi-pole connectors
on the C-Frame patch panel. The connectors used are the
Radiall
HV multipin (52)
receptacle
(
Radiall code 691 803 006, EDH SCEM code 09.41.34.730.6).
