I also updated ec_atten.dat, which is the EC scintillator attenuation length
database used by GSIM. For strips 1-8 in each of the 39 layers/sector, I replaced
measured attenuation lengths with extrapolations based on the overall trend for
that layer. Measurements for these short strips were either non-existent or had
very large errors, and previous extrapolations were somewhat arbitrary.
This required updating EC_ATTEN.map, which contains the stack attenuation
lengths required by RECSIS/EC, with values for stacks 1-8 calculated from the
new database (basically the average over the 5(8) scintillators/stack viewed by
inner(outer) PMTs).
Cole Smith
cole@apollo.phys.virginia.edu