Here is a summary of the background run data from Aug/17,18. For all background runs, we have made a special configuration Background-all-18.tcf using the new L1 trigger lines but a few special modifications: 1) Cyclic trigger 1 Hz -> 10 Hz 2) BunchX trigger 1 Hz -> 8 Hz (L3 prescale /16->/2) 3) L3 L1 pass through rate 0.5% -> 1% Aug/17 21:00--- Aug/18 3:00AM LER/HER current dependency Run HER (mA) LER (mA) bucket-pattern 7891 50 0 every 8th bucket 7892 100 0 every 8th bucket 7893 200 0 every 8th bucket 7894 300 0 every 8th bucket 7895 400 0 every 8th bucket 7896 450 0 every 8th bucket ------- 7897 0 50 every 8th bucket 7898 0 100 every 8th bucket 7899 0 300 every 8th bucket 7900 0 500 every 8th bucket 7901 0 630 every 8th bucket 7902 0 800 every 8th bucket ------- 7903 100 200 every 8th bucket (LER,HER staggered) 7904 100 400 every 8th bucket (LER,HER staggered) 7905 100 600 every 8th bucket (LER,HER staggered) 7906 100 800 every 8th bucket (LER,HER staggered) ------ 7907 300 173 every 8th bucket (LER,HER staggered) 7908 300 400 every 8th bucket (LER,HER staggered) 7909 300 600 every 8th bucket (LER,HER staggered) 7910 300 800 every 8th bucket (LER,HER staggered) ------ 7911 300 600 every 8th bucket (LER,HER in collision) ------ 7912 0 200 every 4th bucket 7913 0 500 every 4th bucket 7914 0 700 every 4th bucket 7915 0 900 every 4th bucket 7916 0 1100 every 4th bucket ------ 7917 0 0 No beam cosmic baseline Most of the runs had ~4000 events. Analysis of the L1 Pass through events can be found in: http://www.slac.stanford.edu/BFROOT/www/Detector/Trigger/backrounds/index.html