Hopefully can adopt E158 stepping motor control program. New spectrometer design for E161. Filled with alumina, 3.45 m long. Looking at acceptance and resolution versus detector size. So far, results look similar to Peter's simplified program.
Resolution is better too.
Will try aluminum instead of alumina. Steve Looked at 100 tracks in one spill. Can reconstruct most of them even with 1000 sprinkle hits. Dead time is not a big problem. Ambiguities not checked.