Upgraded version of the ITS that includes upgraded truly-cylindrical inner barrel.

Provided O2 has been compiled with upgrades enabled, it is possible to simulate ITS 3 geometry within the o2-sim executable.

IT3 module is enabled via the -m IT3 parameter. In case of PIPE to be enabled, the size of the beam pipe is automatically scaled to what is foreseen for the upgrades.

Typical command to generate MC data:

o2-sim -m PIPE IT3 [...]

Currently, the reconstruction is driven the macro/run_trac_alice3.C, which takes as input the hits generated by simulation. Hits can be smeared upon request (see kUseSmearing).