| 4 |
|
for an more complete description see~\cite{ref:grounding}. |
| 5 |
|
The high and low voltage return lines of each string |
| 6 |
|
are joined together at the mother cable head, then this |
| 7 |
< |
point is connect to a gold plated copper sheet (called \it{corona}) fixed to the |
| 7 |
> |
point is connect to a gold plated copper sheet (called {\it corona}) fixed to the |
| 8 |
|
shell front flange. This sheet has been introduced to have a better quality soldering connections |
| 9 |
|
with respect to the aluminum cooling manifolds but it is equipotential to them. \\ |
| 10 |
|
Other important ground connections are at the single module level. On the front-end hybrids |
| 11 |
|
of all the single sided modules and on the R-Phi double sided ones, a small |
| 12 |
< |
gold plated copper pin (called "cometa") is soldered on the low voltage common return, |
| 12 |
> |
gold plated copper pin (called {\it cometa}) is soldered on the low voltage common return, |
| 13 |
|
at the filtering capacitor level, and |
| 14 |
|
it is forced in contact with the module carbon fiber frame. In such a way the module frame is |
| 15 |
|
properly grounded resulting in a flat strip noise profile. |
| 16 |
|
Furthermore a connection has been done between the front-end hybrid return of end-flange side |
| 17 |
|
module and the cooling pipe close to it.\\ |
| 18 |
< |
The DOHM return and its shielding have been also connected to the \it{corona}. The DOHM |
| 18 |
> |
The DOHM return and its shielding have been also connected to the {\it corona}. The DOHM |
| 19 |
|
return is also in contact with the mother cable return via the control cable ground lines. |
| 20 |
|
|
| 21 |
|
%\begin{figure} |
