sPHENIX EMCal discussion

["Huang, Jin" <jhuang AT bnl.gov>]

Dear All,

 

As you may heard from the last HCal meeting, that a new data production for the Apr-2016 test beam was produced after recent software update to improve signal fitting.

 

The new output location is completed at /gpfs/mnt/gpfs02/sphenix/data/data01/t1044-2016a/production/Production_1101_EMCalSet2_HCalPR12/ . We suggest all analysis be updated again with this production. All past production documented here: https://wiki.bnl.gov/sPHENIX/index.php/T-1044#Production_output

 

The specific changes are ADC-VS-Time signal fit tuning in Pull request 204, which reject saturated ADC point from the fitting, and pull request 206, which extract the exact peak height instead of the amplitude constant. Abhisek updated the HCal analysis and observed improved linearity and minor change in resolution. Production QA also show minor changes in EMCal resolution too as on this page (PR 206).

 

Cheers

 

Jin

 

 

______________________________

 

Jin HUANG, Ph. D.

 

Associate Physicist

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________

 

From: Abhisek Sen [mailto:sen.abhisek AT gmail.com]
Sent: Tuesday, October 25, 2016 10:49 AM
To: Huang, Jin <jhuang AT bnl.gov>
Subject: Request for a new production

 

Hi Jin,

   After the HCAL workfest we have decided to redo the production with a small change to take care of the saturation effect. Since you have all the machinery setup, it will be a push button for you.

 

  We would need to exclude the saturation points in the fit. My suggested change is: 

 add below in PROTOTYPE2_FEM::SignalShape_PowerLawExp(double *x, double *par)

at offline/packages/Prototype2/PROTOTYPE2_FEM.C

 

   if(x[0]==0)

  {

   TF1::RejectPoint();

   return 0;

  }

And push the production button. If you are busy let me know. I will need some time to get things setup and run a production.

 

Cheers,

Abhisek