Micro RWell barrel tracker
A curved cylinder detector
For the micro-RWell cylindrical layers, the ones that we have surrounding the DIRC detector are at radial positions of 79.5 and 90 cm from the beamline. Although there is some discussion about replacing some of the micromegas layers with some micro RWell layers, so that the barrel region is a hybrid of the two technologies.
You can also find the Fun4All geometry here: https://www.dropbox.com/sh/j4n4g5h80g9tai6/AAAzmXSHRGQCShoSiewe6HCDa?dl=0 Where the detector is constructed in the G4_RWell.C and Build_G4_RWell_Sup01.C files