GMT Performance study : FIrst decoding of run 14109021 to 14109027

Code : /star/u/mvandenb/GMT
event.root files: /star/data05/scratch/mvandenb/GMT/results/
Residuals histograms : /star/data05/scratch/mvandenb/GMT/results/results.root (contains the results of 35 on 46 files, in progress)

Status : Hits from the TPC and in 7 GMT detectors (module 6 dead ?) but no obvious correlation/residual peak. The GMT data are pedestal substracted (mean calculated on 5 events without signals). It seems to be a systematic noise pattern in GMT XY plots. All plots are shown for all the modules at the same time and no special pattern have been observed for individual modules. All plots, including modules by modules informations, are in the root file (/star/data05/scratch/mvandenb/GMT/results/results.root). All length are in cm.

Hits in GMT from TPC and GMT :

   
(TPC tracks are only reconstructed when there is a GMT hit)


2D hit Map :

   

                        (noise pattern in lower left corner? Present in several modules)                                                   (3D of the TPC with the GMT modules (blue boxes), GMT hits (blue points), TPC hits (red points). Only includes one decoded file. Please ignore                                                                                                                                                                                                   the oblique black lines.)


(TPC hit in GMT plane with a cut on residual < 50)

Residuals :

 

Correlation :

(no correlations have been seen for XY and YX)