I would suggest you to look for info on modern prisons, since they are effective by todays standards, and thus should be effective in the world of Shadowrun as well. Atleast with some modifications.
Also, I would suggest that the prison/complex where they are hidden wouldn't be a government/Megacorp controlled one, since that would be pretty much impossible to break out of... Unless the scenario is to break IN to rescue someone being held captive there? I think that is the defining question here. Are the characters breaking out of the jail or breaking in to break someone else out? Or is someone from the team inside?