How do I get the normalization factor from the number of photons (gflux-files) ?

previous research

• May 25 / 2011 : Nomalization
• Aug 11 / 2011 : The current issue of Normalization Factor
• Sep 29 / 2011 : The current issue of Normalization Factor
• Nov 28 / 2012 : Check the normalization factor
• Jan 27 / 2013 : Check the normalization factor

current status

Mar 15 / 2013

Step 1. The gflux files

• _tc is binned by T-counter
• _eb is binned by E-bin
• _erg has 100 binning, 25-MeV-wide bins in the range from 0.4875 to 2.9875 GeV centers of bins: 0.5, 0.525, 0.55...
• _erg2 has 50 binning, 50-MeV-wide bins in the range from 0.5 to 3 GeV centers of > bins: 0525, 0575, 0.625...

from laboratory system (_erg file)	from center-of-mass system (_erg file)

Step 2. Add the data of period 1 and period 2

from laboratory system (_erg file)	from center-of-mass system (_erg file)

Step 3. Find the ratio the number of photons between different periods

Step 4-1. Add the number of photons in each WBin

• The y-axis : the number of photons

• Blue line is before adding and Red line is after adding in each WBin

period 2	period 3	period 4	period 5	period 6	period 7

• The y-axis : errors of the number of photons

• Light blue line is before adding and Red line is after adding in each WBin (use the following equation)
  Δσ = sqrt( Σ (ΔN_{n})^2 )

period 2	period 3	period 4	period 5	period 6	period 7

Step 4-2. Find the ratio the number of photons between different periods

normalization-factor

Step 5. compare normalization factors from the gflux and Ch2 events