This area unfortunately does not have a map, but it's pretty linear, so hopefully you shouldn't have any problems finding your way. I have constructed a map, however, and added some "landmarks," so hopefully it'll help in case you get stuck, or otherwise lose your bearings. For the most part, the facility is deserted with the exception of about three Bloodsuckers - so you should be able to proceed fairly quickly until you reach the deactivation mechanism for the Brain Scorcher. Once you turn off the Brain Scorcher though, getting out wont be as easy as it was getting in.