BHT3 luminosities for feb. APS

Attached is the most recent version (4a, computed Jan21) of the luminosity table. In this version I'm using a fixed, eight-bin window for each of the two abort gaps.  The equation for the single-beam background is:

SBB=(Gap1/8)*N_BlueBunches + (Gap2/8)*N_YellowBunches

where Gap1 is the sum of L2Wrandom events that fall in the eight-bin window 31<bXing<40, Gap2 is the sum across 111<bXing<120, and N_BlueBunches and N_YellowBunches are the numbers of filled bunches in each beam.  Note that this approximation assumes there are no empty Yellow bunches in the blue abort gap and vice versa, which may not always be true.  A missing bunch there would alter the SBB value by ~1/16.  On average the SBB seems to be ~10% of the signal, so we're looking at 1/10*1/16=<1% change in the luminosity for each missing bunch.

The number of BHT3 triggers that fired is:

BHT3=(L2Wrandom-SBB)*50

where 50 is the prescale of the L2Wrandom.

The integrated luminosity for each run is:

L=BHT3/(fdet*sigma)

where fdet is the fraction of the detector that is working, and sigma=481 is the latest value of the cross section for BHT3.

 

The final column, "Bad?" is empty save for three runs where the abort gaps do not seem to be empty compared to the surrounding bunch crossings.  Those runs are marked "Bad".

 

By fill, these calculations yield the following integrated luminosities:

Fill,   LT (nb^-1),

10383,  56.755562

10398,  187.429474

10399,  382.472534

10402,  69.623947

10403,  58.989353

10404,  150.879822

10407,  123.953499

10412,  481.058746

10415,  341.601868

10426,  103.630058

10434,  278.005585

10439,  313.108307

10448,  328.902191

10449,  350.792633

10450,  304.248779

10454,  129.831009

10455,  314.754333

10463,  200.447586

10464,  47.926746

10465,  138.047165

10471,  340.185577

10476,  23.796785

10478,  51.555954

10482,  567.829956

10486,  561.655457

10490,  435.234619

10494,  656.281189

10505,  598.020447

10507,  299.432617

10508,  206.093536

10517,  333.355865

10525,  743.427551

10526,  378.027191

10527,  762.753479

10528,  344.040436

10531,  971.032043

10532,  721.126099

10535,  967.734009

10536,  416.277313

SumL=13740.318359 nb^-1