Realistic layer radii

[dhrou]

We need to have realistic layer radii.
A good baseline is to use the ITK layout task force report (https://cds.cern.ch/record/2239573 atlas restricted unfortunately) section 2.4 Table 1 and 4. (curious to see similar number for CMS)
We have 5 layers of pixel at radii (in mm) 39 85 155 213 271 and 4 strip layers : 405 562 762 1000 .
(pixel and strip have different position resolution).