Concepts for the 3-layer lens.
- 2017 prototype setup (plate +3-layer cylindrical lens +45 degree prism)
- realistic beam profile
- pions and protons @ 7 GeV/c
- time-imaging reconstruction with full-simulated pdfs
- time=[0,40] ns
- the radii of inner and outer surface of the NLak-33 layer: r1=33 and r2=25
L6
![](/~rdzhigad/data/prt/a17/lens_designs/lens6_0.png)
L7
![](/~rdzhigad/data/prt/a17/lens_designs/lens7_0.png)
L8
![](/~rdzhigad/data/prt/a17/lens_designs/lens8_0.png)
Examples with 7 GeV/c protons at 90 degree incident angle:
![](/~rdzhigad/data/prt/a17/lens_designs/lens6_1.png)
![](/~rdzhigad/data/prt/a17/lens_designs/lens7_1.png)
![](/~rdzhigad/data/prt/a17/lens_designs/lens8_1.png)
L6 (black), L7(red), L8(blue)
![](/~rdzhigad/data/prt/a17/lens_designs/lens_nph.png)
![](/~rdzhigad/data/prt/a17/lens_designs/lens_sep.png)