Updat e on the Fermi bubbles analysis.

1. Update on the Fermi bubbles analysis. V.Kulikovskiy

2. New data prod, MC v2 + v2.2 thresholds? • ratio of number of events with lambda > -6.5 • 5 lines has different and not so stable ratio • some groups of the runs have problems (experts are contacted) • Corine/Bruny to check effective thresholds for some runs • Thomas to check some data production runs ~100 runs 10l data missing 5l + 20% dead time Jan-Feb 2010 data production problems

3. 34433 Line 1-12 Physics Trigger (th2 10 p.e.) 1h 53m 49s 2nd try with 12 lines-hopefully correct t0 calib 34432 Line 1-12 Physics Trigger (th2 10 p.e.) 21m 32s first try with 12 lines! HV SCAN31381-31666 7l 10l 5l 8l 34419-34427 Line 1-12 Physics Trigger (th2 10 p.e.) SCAN33757-34345 missing in prod

4. Lambdadistributionsfor 5 linedataand 12 linedataperiods.

5. New data prod, MC v2 + v2.2 • ratio was fixed with exponential (sent to Aart for detector inefficiency investigation). • runs inside 3 sigma are taken.New dE/dX MC production exist. 700 runs are missing (429 are missing when I used “good runs list”).

6. OFF zones test. Absolute difference between number of MC atmospheric neutrino events in on-zone and off-zone 1 (black) divided by mean number of events in 4 zones as a function of the mean number of events. The same distributions are presented for off-zones 2 (red) and 3 (black). A gray band shows mean statistical error. Absolute difference between number of data events in off-zone 1 and off-zone 2 (black) divided by mean number of events in 3 zones as a function of the mean number of events. The same distributions are presented for off-zones 2 and 3 (red), off-zones 3 and 1 (blue). A gray band shows mean statistical error.

7. data/mc comparison • lambda > -6 , nhits > 10

8. energy ANN dE/dX

9. MRF 85 degrees cut new dE/dX prod