Dear Taka, Alessandro,

> Cooling Pipe
> ============
>                          Current       Alessandro       
> Drawing
>                          -------     ----------    -------
> Radius/mm                  2.0          2.1      
> Length/mm              1571.76       1471.6       
> Radial position/mm (3)   304.8        306.9    307.1/309.7
>                    (4)   375.7        377.9    378.0/380.6
>                    (5)   447.4        449.9    449.7/452.4
>                    (6)   518.1        520.9    520.4/523.1
> 
> * Current positions (estimated from entry points of
> particles) are 2-3mm inside values suggested by Alessandro
> and drawings. Propose to leave them there - moving likely to
> cause huge problems.
> 
> * Length will be updated to 'whatever is convenient'. I
> think the radius can be increased, but am not sure it is
> worth it. Mass and composition will be updated.
> 
> - T.K.: If the radius is increased to 2.1mm, the pipe edge
> becomes closer to the cooling block for the lower case. Let
> not change it. As I said, in order to separate the cooling
> pipe from the cooling blocks safely, I had to move the
> cooling pipe about 1.5 mm farther. I got 305.8mm instead of
> 304.8mm (B3 case) from my drawing of
> http://atlas.kek.jp/si-soft/geometry/rphiView-B3lower.pdf <http://atlas.kek.jp/si-soft/geometry/rphiView-B3lower.pdf> .
> Can Pat check it again though it is a tiny difference?
> 
  
  CPW: I've just found the file with the histograms of entry positions 
       into the cooling pipes - and I made a mistake with the numbers
       (radius/diameter confusion), sorry. The radial positions are all 
       1mm higher than I quoted above, so B3 is indeed 305.8mm as Taka 
       says. So that discrepancy has evaporated, good.

                                                Regards, Pat