MARS15 Calculations for the 125-GeV Higgs Factory Muon Collider
       		    SS, NM, IT (2014)

File "mumi-5e6-40m-lowth" contains background in IP coming from the positive
z-side for a 62.5-GeV mu- beam (z=30 to -10 m collider region).
NDECAY=5.1335e6 is a number of simulated decays.
Thresholds - 100 keV for charged hadrons,muons,electrons, positrons and gammas,
and 1e-12 GeV for neutrons.

Particles were collected on the MDI surface (shielding nozzle etc.)

Every row consists of
      NI,JJ,X,Y,Z,PX,PY,PZ,TOFF,W,ZDEC,XORIG,YORIG,ZORIG,WORIG,EORIG,IORIG,KORIG
      FORMAT(I11,I7,3F11.3,11(1PE14.6),I7,I3)


NI - history number
JJ - PID, reaching detector
X,Y,Z - coordinates on interface surface (cm)
PX,PY,PZ - momentum components  (GeV/c)
TOFF - time with respect to the bunch crossing
W - particle statistical weight
ZDEC - decay coordinate along the beam line
XORIG,YRIG,ZORIG  - coordinates (cm) of particle origin
WORIG,EORIG,IORIG - weight, energy, PID of the parent particle
KORIG - type of process in which the particle was created


      MARS15 PARTICLE ID:
   1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18   19  20   21
   p   n  pi+ pi-  K+  K- mu+ mu-  g  e-  e+ pbar  pi0  d   t  He3 He4 num nuam nue nuae
   22  23  24  25  26  27   28   29   30   31   32   33   34   35   36   37   38   39    40
  K0L K0S  K0 AK0 LAM ALAM SIG+ SIG0 SIG- nbar KSI0 KSI-  OM- sib- si0b sib+ AKSI0 ksib+ omb+


All weights in the file W=40 (related to 1 decay/m rate over 40 meters)
To get normalization per bunch (2e12 muon/bunch), modify it as

W_bunch=W*5.1335e6/NDECAY