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Position of rails for the signal cables.

A gap is centered at the electrode.

$45^o \Longrightarrow 96 gaps$

$0^o$ corresponds to missing electrode on bottom of the module
(gap 0).

Center of first standard rail:
$25^o \Longrightarrow 53.3 gaps \Longrightarrow next-absorber = 682$.


Center of second standard rail:
$35^o \Longrightarrow 74.6 gaps \Longrightarrow next-absorber = 737$.

Center of special rail:
$45^o \Longrightarrow 96 gaps \Longrightarrow next-absorber = 1st-of-next
module$.

Center of HEC rail:
$55^o \Longrightarrow 117.3 gaps$.

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