This page summarizes progress in understanding of absolute lumi for pp500 in 2009 run

1. Absolute calibration of BHT3-DSM>31, by Ross. Writeup: ver3.0 ,-> x-sect=501 nb
2. Table ver3a with LT per run from Ross  , method described here has the following problems:
   
   • hardcoded identical position of abort gaps
   • automatic search for abort gaps may fail due to low stats
   • approximate correction for DSM thres for setA by suing computed from ADC DSM values
   • spot check w/ 'Bill luminosity' shows moderate agreement (see  table)
3. Input list with # blue, yellow filled bunches for 581 runs is in attachment A). It is used by Ross to find # of BHT3-rnd accepted events in given run and in respective abort gaps. 
4. List of pp500 runs sorted by ZDC rate is in attachment B)