Original code from V. Drollinger, see notes

CMS IN 2005/004

and http://cmsdoc.cern.ch/cms/PRS/gentools/www/geners/packages/beamhalo/gen_beamhalo.html

For GENMOD = 2, need a link called "input.txt" which must point to :

/afs/cern.ch/cms/beam_halo/ir1.lssl.6_4.pn274.sam

input.txt should be in the directory where you run cmsRun

Added on February 25:

to run with the MARS files, you need a link for bgas.123 and tails.1,

in the directory where you run cmsRun.

The files are in /afs/cern.ch/cms/beam_halo/.