June 03, PrimEx Weekly Meeting

PrimEx Introductory Lecture Series (discussed at Compton work group meeting)

1. General organization of PrimEx software package (Mark)
2. Organization of PrimEx ROOT ntuple (Mike)
3. Organization of PrimEx Data Base (Dustin)
4. Reconstruction of compton event in PrimEx (Liping, Lena)
5. HYCAL calibration and monitoring (Dustin, Vasiliy)
6. Reconstruction of showers in HYCAL (Raphael, Vasiliy)
7. ...
   

• Possibility to use double compton for intermidiate calibration of the calorimeter center part
• first step (Lena): check the statistics (preliminary 40 kEv for interval - enough to calibrate 10x10(?) group) .
• If the statistic is adequate - calibration close to beam calibration and comparison of the result. 
• Investigate single compton (photon) for calibration using double compton
• Possibility to use single compton during production run.

• Need codes cross-check 
• There are some problems in already existing libraries 
• Changes in the analysis sometimes require some modifications in codes
  
• Need to create new DB - configuration of the triggers for each run and adjust the code to work with this triggers (Dustin and students).
• Trigger bits unfortunately were changed in time for the same type of data taking
• Introduction of new bank (Mark) - flags for "bad events" from each detector (library)
• we need estimate number of the event we are not analysing for flux estimation
• each group have to prepare cretiria for "bad reconstructed" event.
• New library (Mark) -- (physics or particle?)
• the equivalent of analysis program before creation NTuple Tree
• reconstruction of pi0 and corresponding functions (energy and other constraints)
• search the candidates for compton event
• ...
• We will meet weekly on thursday, 3pm, beginning June 16.
  

1. Define trigger type for each run and prepare corresponding data base
2. Analyse the stability of mean pedestal to analyse the influence of sparcification (using DB data)
3. Analyse the LMS behaviour (using DB data)
4. ...