sPHENIX EMCal discussion

[Martin Purschke <purschke AT bnl.gov>]

Jin,

not disputing the recalibrator, but wouldn't such a has-to-be-applied
correction not go on the DSTs already, rather than armies of people
individually applying the correction after the fact? Just wondering...
the recalibrators were once designed to take care of things we
discovered after the fact, when a big production was done and a
re-production just to incorporate that was too expensive. It's not a lot
of data, so we could just do that.

My 5cts,

    Martin


On 05/31/17 09:53, Huang, Jin wrote:
>
> Great Job! Joe!
>
>  
>
> It is also interesting that the energy resolution spread from
> different pseudo-rapidity bins become consistent after the recalibration.
>
>  
>
> Now it would be useful to introduce a module applying cluster energy
> recalibration for all analyzers of EM showers. It can be in the
> nightly build with the name of *coresoftware*
> <https://github.com/sPHENIX-Collaboration/coresoftware>/simulation
> <https://github.com/sPHENIX-Collaboration/coresoftware/tree/master/simulation>/g4simulation
> <https://github.com/sPHENIX-Collaboration/coresoftware/tree/master/simulation/g4simulation>/*g4cemc*/RawClusterRecalibrator.
> The calibration constant data file can be installed at  *calibrations*
> <https://github.com/sPHENIX-Collaboration/calibrations>/*CEMC**/**Calibration**via
> pull requests too. An example of doing recalibration via calibration
> data files is from the last two test beams, **CaloCalibration*
> <https://www.phenix.bnl.gov/WWW/sPHENIX/doxygen/html/da/d36/classCaloCalibration.html>*.
> Welcome to give a try.*
>
>  
>
> Cheers,
>
>  
>
> Jin
>
>  
>
>  
>
>  
>
> ______________________________
>
>  
>
> Jin HUANG
>
>  
>
> Associate Physicist
>
> Brookhaven National Laboratory
>
> Physics Department, Bldg 510 C
>
> Upton, NY 11973-5000
>
>  
>
> Office: 631-344-5898
>
> Cell:   757-604-9946
>
> ______________________________
>
>  
>
> *From:*sPHENIX-EMCal-l [mailto:sphenix-emcal-l-bounces AT lists.bnl.gov]
> *On Behalf Of *Joe Osborn
> *Sent:* Wednesday, May 31, 2017 9:12 AM
> *To:* Haggerty, John <haggerty AT bnl.gov>
> *Cc:* sphenix-emcal-l AT lists.bnl.gov
> *Subject:* Re: [Sphenix-emcal-l] Simulated Resolution of EMCal
>
>  
>
> Dear EMCalers,
>
>  
>
> Following Jin's suggestion, I implemented a leading order position
> dependent recalibration on the energy response for photons, electrons,
> and positrons. The results are attached in this email. 
>
>  
>
> Please note that the "before recalibration" plots are not the exact
> same as what I sent before as I was inadvertently only using 10% of
> the simulation that Chris produced (whoops). The results here are
> using the entire single particle production. The position dependent
> recalibration reduces the constant term by 1-2% for each eta bin.
>
>  
>
> Thanks,
>
>  
>
> Joe Osborn
>
>
>  
>
>  
>
> ---------------------------------------
>
>  
>
> Joe Osborn
>
> Ph.D Candidate
>
> University of Michigan
>
> jdosbo AT umich.edu <mailto:jdosbo AT umich.edu>
>
> (859) 433-8738
>
>  
>
> On Sun, May 28, 2017 at 10:13 AM, Joe Osborn <jdosbo AT umich.edu
> <mailto:jdosbo AT umich.edu>> wrote:
>
>     Hi John,
>
>      
>
>     Chris sent a couple of emails out to the software lists, but I
>     guess not the other lists. It might be too late as the BBQ might
>     already be fired up, but for anyone who wants to take a look the
>     G4 hits files are located in the following directory:
>
>      
>
>     /sphenix/data/data02/review_2017-08-02/
>
>      
>
>     Joe
>
>
>      
>
>      
>
>     ---------------------------------------
>
>      
>
>     Joe Osborn
>
>     Ph.D Candidate
>
>     University of Michigan
>
>     jdosbo AT umich.edu <mailto:jdosbo AT umich.edu>
>
>     (859) 433-8738 <tel:%28859%29%20433-8738>
>
>      
>
>     On Fri, May 26, 2017 at 4:04 PM, John Haggerty <haggerty AT bnl.gov
>     <mailto:haggerty AT bnl.gov>> wrote:
>
>         Joe,
>
>         Thanks to Joe, Jin, and Chris for these results.  There is
>         obviously some bouncy behavior that seems a little odd, but I
>         know that even in very simple cases, getting "the resolution"
>         at the few percent level is not as simple as it sounds.
>
>         Just to be clear--this is with the right detector material
>         budget in front of the EMCAL, all events from (0,0,0), and
>         Sean's light collection map in every tower?
>
>         Probably as you say nobody's going to have time between the
>         barbecue this weekend and the upcoming barbecues at the lab,
>         but you might ask Chris to post their location to the wiki and
>         the emcal and hcal lists.
>
>         On 5/26/17 3:37 PM, Joe Osborn wrote:
>
>             Dear EMCalers,
>
>             As Jin presented in the simulations/EMCal meeting this
>             week, he has updated the EMCal simulations with the tower
>             tilting in azimuth and polar directions, amongst other
>             changes. With the simulations code tagged, Chris produced
>             single particle simulations that people can play with
>             before we start producing large batches of simulations.
>
>             Attached are the resolution of the EMCal for photons,
>             electrons, and positrons in several different eta bins.
>             Just to be clear, the single particles were thrown for 9
>             different energies in the four different eta regions
>             surrounding the values quoted in my plots (i.e. eta=0
>             corresponds to truth particles being thrown in +/-0.05
>             units of pseudorapidity around 0, same for eta=0.3,0.6,
>             and 0.9).
>
>             Any comments would be great, or perhaps everyone will be
>             too busy enjoying the long weekend in which case we can
>             also discuss them at the EMCal meeting next week.
>
>             Thanks,
>
>             Joe
>
>             ---------------------------------------
>
>             Joe Osborn
>             Ph.D Candidate
>             University of Michigan
>             jdosbo AT umich.edu <mailto:jdosbo AT umich.edu>
>             <mailto:jdosbo AT umich.edu <mailto:jdosbo AT umich.edu>>
>             (859) 433-8738 <tel:%28859%29%20433-8738>
>
>
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>
>
>
>         -- 
>         John Haggerty
>         email: haggerty AT bnl.gov <mailto:haggerty AT bnl.gov>
>         cell: 631 741 3358 <tel:631%20741%203358>
>         _______________________________________________
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>  
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>
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