almost done.

I've finally gotten the kinks worked out of the code, and can demonstrate once again that the cross section is essentially independent of the choice of away-side opening angle.  There is a slight upward drift as the angle widens, which should be expected, since the less 'away' the away side energy is, the more likely it's associated with background.  The associated background rates and uncertainties will follow shortly, and then the updated starnote.

I will attach the luminosity by run once I've resolved the dead fills, and will issue a final version (v5) when I upload the starnote.

 

Total integrated luminosity as determined by different BHT3coin conditions:

Angle=0,sumL=12.958104pb^-1

Angle=1,sumL=10.542626pb^-1

Angle=2,sumL=11.718079pb^-1

Angle=3,sumL=12.294696pb^-1

Angle=4,sumL=12.619625pb^-1

Angle=5,sumL=12.683365pb^-1

Angle=6,sumL=12.812954pb^-1

Angle=7,sumL=12.855909pb^-1

Angle=8,sumL=12.853354pb^-1

Angle=9,sumL=12.872662pb^-1

Angle=10,sumL=12.849817pb^-1

Angle=11,sumL=12.897146pb^-1

Angle=12,sumL=12.926191pb^-1

Angle=13,sumL=12.965418pb^-1

Angle=14,sumL=12.961200pb^-1

 
Total integrated luminosity for angle=5, divided by fill:
Fill number, LT (nb^-1)
F10383,0.000000
F10398,0.000000
F10399,0.000000
F10402,0.000000
F10403,0.000000
F10404,0.000000
F10407,113.852661
F10412,470.450928
F10415,317.024536
F10426,98.114296
F10434,260.260681
F10439,296.610596
F10448,305.174805
F10449,333.617523
F10450,287.332306
F10454,121.467560
F10455,313.561462
F10463,194.102264
F10464,0.000000
F10465,137.228088
F10471,313.346375
F10476,18.692120
F10478,63.523148
F10482,570.905273
F10486,552.994629
F10490,446.067200
F10494,675.950562
F10505,561.900635
F10507,300.228699
F10508,214.982147
F10517,349.603180
F10525,753.974609
F10526,401.508545
F10527,921.169678
F10528,0.000000
F10531,1019.083069
F10532,861.985901
F10535,986.821655
 
I'm still getting these unexpected zeroes for some fills, and will double check the runlist I'm using.
 
 
The working point (opening angle of five trigger patches (five to either side of directly opposite the highest tower, for a total of ten trigger patches, or one third of the barrel) is pretty much at the turn-over point of the number of BHT3coin counts - narrower away-side windows cut out significant amounts of signal while wider ones don't let in much more.  It should be assumed that progressively wider windows contain more and more events that don't actually correspond to a collision (that plot's coming shortly).
fig 1, number of raw BHT3coin events in L2W as a function of opening angle (in trigger patches).