sPHENIX tracking discussion

["Frawley, Anthony" <afrawley AT fsu.edu>]

Hi All,

I made some estimates of the required length of the silicon strip layers in the intermediate tracker. The lengths required to match our acceptance of eta within +/- 1.1 units are:

Radius (cm)          length (cm)       minimum sensors/half-ladder

6.0                              +/- 8.1                    7 x 2 = 14

8.0                            +/- 10.7                    9 x 2 = 18

10.0                          +/- 13.4                    12 x 2 = 24

12.0                          +/- 16.1                    14 x 2 = 28

where the minimum sensors /half-ladder number assumes 1.2 cm long sensors, and is rounded up to completely cover the acceptance.

Cheers

Tony