run 10132011

 Run 10132011 (5/12)

 

The first 390,000 events from this run are analyzed. Configuration was "production2009_200Gev_Single / Physics"

For 829 cells in Eleanor's table, and total of 10709 triggers came from those cells. (based on Qtdata)

Hottest 25 cells produced 40% of the triggers. Module break downs are; NL:11, SL:9, NS:3, SS:2

Total 150 cells produced 90% of the triggers.

It seems that the hottest cells have been cooled down. On the other hand, the overall trigger rate has become quite low. For this run, the non-LED FMS fast triggered ~5% of the times.

Another 8042 triggers came from the perimeter cells that are on the ignore list. The portion of the triggers that are "unofficial" seems to be growing as the hottest cells that have been cooled down lately (I think) tended to be part of the official trigger. My understanding is that the "unofficial" cluster sums are formed as if the high tower was in the middle of the qt8 strip, so they are mostly very close to what they should be.

The clusters are generated from Qtdata. These clusters differ from the "appended/internal" L1 DSM input clusters in two aspects. 1. Qt8 sums are NOT truncated. 2. The perimeter high towers are ignored according to Eleanor's table. 

Total of 40 clusters, one for each Qt32 board, are compared to the threshold.

LED suppression is done by looking at the number of channels with ADC>10, and cutting at 800.

 

 

 

For the following plots, the origin is South Up.

 

 

 

 

Cluster sum distribution. (after low 5 bit suppression)

 

Trigger multiplicity

 

 

Attached spreadsheet shows number of triggers, pseudo-rapidity, and phi for each cell. Sheet 1 is for all the cells that have cluster definition in Eleanor's table. Sheet 2 is for those that do not, including both the physical holes and the trigger ignores. For this, the number of trigger is based on appended L1 input.