sPHENIX HCal discussion

[John Lajoie <lajoie AT iastate.edu>]

Hi Anne, Abhisek:

    One quick addition -

    The plot listed below is for the HCAL *only*. For Anne's talk I think what the audience will be most interested in is the measured e/pi for the *full* calorimeter (EMCal + HCAL). Abhisek, can you make this plot for Anne, without a simulation curve and with "sPHENIX Preliminary".

John

On 10/29/2016 1:01 PM, Sickles, Anne M wrote:

Hi Abhisek,

I talked to John L, John H, and Jin and we’d like to show the e / pi ratio without the simulation on Tuesday.  Can you update the plot?

Best,

Anne

On Oct 28, 2016, at 3:07 PM, Abhisek Sen <sen.abhisek AT gmail.com> wrote:

Hello HCALers,

   Anne's IEEE talk is next week. So I have added "sPHENIX preliminary" label to HCAL plots for everyone to review. Please let me know if you have comments. 

HCAL Standalone plots:

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/HCAL_standalone_signal.pdf

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/HCAL_standalone_res.pdf

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/HCAL_standalone_linearity.pdf

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/HCAL_standalone_eoverpi.pdf

HCAL+EMCAL hadron measurement plots:

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/sPHENIX_hadron_signal.pdf

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/sPHENIX_hadron_res.pdf

http://www.phenix.bnl.gov/WWW/publish/abhisek/sphenix/preliminary/sPHENIX_hadron_linearity.pdf

Please refer to testbeam paper for analysis details. Few comments:

1/ The nonlinearity observed in HCAL is a preamp saturation effect. A suggestion during the HCAL workfest was to remove the saturation points and rerun the analysis to improve the linearity. We made a new production but results were same. I think the fitting changes were not included. Jin is looking more into it. We will likely have one more new production.

2/ I intentionally did not add e/pi plot for sPHENIX configuration. That needs more internal discussion. 

Please let me know if you have any comments.

Cheers,

Abhisek

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Anne Sickles

Assistant Professor, Department of Physics

University of Illinois at Urbana-Champaign

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John Lajoie

Professor of Physics

Iowa State University

 

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