The area where most recent talks/results/ were presented is at
rnc.lbl.gov/~jhthomas/public/HFT/

The code is on rcf in:

~jhthomas/STAR/hft/DetectorDesignV5.C (good on 10/1/2007)
It compiles in root with
>.x DetectorDesignV5.C++

The macro is sort of self-documented.