\begin{table}%t8
\caption{\label{tab8}20 K heat load budget.}
\par
%\centering
\par
\begin{tabular}{p{3cm}r}
\hline\hline\noalign{\smallskip}
  Item  & $P$ [mW] \\
\hline
FEMs \dotfill &299 \\
Waveguides \dotfill &249 \\
Cryoharness \dotfill  & 3 \\
Struts \dotfill  & 23 \\
Radiant coupling \dotfill & 2 \\
\bf TOTAL \dotfill &\bf 576 \\
\hline
\end{tabular}
\end{table}