Differences
This shows you the differences between two versions of the page.
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daq:mode2 [2012/05/18 14:32] campbell |
daq:mode2 [2014/02/27 16:14] |
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| - | ====== Severity ====== | ||
| - | We cannot afford losing any triggered data. For absolute x-section measurement GRETINA efficiency is crucial. | ||
| - | |||
| - | ====== Problem ====== | ||
| - | For S800-GRETINA data with GRETINA self-trigger only we find S800 events in Global.dat without corresponding GRETINA event. | ||
| - | |||
| - | == Size of problem (from Scott's email)== | ||
| - | |||
| - | In a low rate file, the following event counts were found: | ||
| - | | ||
| - | 11,886 coincident events (s800 and gretina present with correlated timestamp) | ||
| - | 719 s800 only events | ||
| - | 15 gretina only events (now fixed in S800 daq) | ||
| - | |||
| - | So, ~6% of the decomposed data is missing. | ||
| - | |||
| - | ====== Progress ====== | ||
| - | * 5/17/2012: Discussed losses with Mario. Code review and version check to follow. | ||
