Star-tpc-l mailing list

["Fisyak, Yuri V" <fisyak AT bnl.gov>]

Hi Frank and all,

1. I don’t see any issues which have blocked the creation of dedicated library for calibration. And Gene has already created it as SL24y.
2. The production of calibration samples can be started right now with SL24y:

1. I would prefer to produce the calibration samples for all fixed target runs in 2019-2021.
2. I am not sure that SL24y library will reproduce results obtained in TFG24c/TFG24d due to some differences which were not included in TFG24c.Export.Mini (Vc and some modifications of tracking), By this reason I would like to keep picoDst for these calibration runs to compare strange particle reconstruction with KFParticle.
3. The calibration sample production and the calibration itself will take at least 2 weeks. Thus, the full production can be started ~1 October.
4. New production chain should have added “Corrz” to activate Alignmnet2024 ,
5. DBV should be set as tomorrow, i.e. DBV20240915, to account fixes of starTriggerDelay. (see https://www.star.bnl.gov/~fisyak/star/Tpc/Alignment/T0/)

There is an issue, which Is under study right now:

1. observed difference in reconstruction of old data samples with old (SL24a, dev, without Alignment2024) and new (gitdev, with Alignmnet2024).
2. I don’t see difference in hits, which could be affected by Alignment2024, but
3. I see difference in tracks, which should not be affected by aligmnet.
4. To understand this issue,  I need full sample of test for /star/rcf/test/*dev/daq_sl302.stica/*/*/*_64bit with event.root files with hits.
5. For now, I have only samples for 2016, 2017, 2018, 2022. I need 2000-2015, 2019-2021.

 

                                                              Yuri Fisyak

STAR                                           Phone: +1 631 344 3913
Brookhaven National Laboratory  Fax:    +1 631 344 4206
510A/1-161
http://www.star.bnl.gov/~fisyak       E-mail: fisyak AT bnl.gov

 

 

 

From: Frank Geurts <geurts AT rice.edu>
Date: Saturday, September 14, 2024 at 4:23 PM
To: Fisyak, Yuri V <fisyak AT bnl.gov>
Cc: Witt, Richard CIV USNA Annapolis <witt AT usna.edu>, Star-tpc L <Star-tpc-l AT lists.bnl.gov>, This is for high-level STAR software and computing discussion among S&C leaders and experts. <star-scmgt-l AT lists.bnl.gov>
Subject: Approval Status // Re: [[Star-tpc-l] ] Status of PR for New Alignment Library Code

Hi Yuri, All - 

 

Thank you for clarifying. This was not particularly clear from your “ignored” comment.

 

With this email (cc: TPC and S&C management group), I want to formally ask the TPC experts and S&C experts for the green light, or whether there are any fundamental issues that need to be addressed before we move to the creation of a dedicated library so that we can start calibrations and production of FXT no later than next week.

 

 

Thanks,

 

 -Frank

 

 

 

On Sep 13, 2024, at 10:50 AM, Fisyak, Yuri V <fisyak AT bnl.gov> wrote:

 

Hi Frank, thank you for explanation. Yes, it is true. I have removed “OSectorAlign” because it does compete with corrections coming from (new) Alignment2024.

 

                                                              Yuri Fisyak

STAR                                           Phone: +1 631 344 3913
Brookhaven National Laboratory  Fax:    +1 631 344 4206
510A/1-161
http://www.star.bnl.gov/~fisyak       E-mail: fisyak AT bnl.gov

 

 

 

From: Frank Geurts <geurts AT rice.edu>
Date: Friday, September 13, 2024 at 11:40 AM
To: Fisyak, Yuri V <fisyak AT bnl.gov>
Cc: Witt, Richard CIV USNA Annapolis <witt AT usna.edu>, Star-tpc L <Star-tpc-l AT lists.bnl.gov>
Subject: Re: [[Star-tpc-l] ] Status of PR for New Alignment Library Code

Hi Yuri,

I am referring to these particular comment that was made in the PR and which appears to indicate that the CorrZ option removes the OSectorAlign chain option that implements a TPC distortion correction. That may be unintentional, but should  be corrected unless there is an explanation.

What may be confusing is that it doesn't explicitly pop up in the PR as a change, but for CorrX, CorrY this chain option is included, while for the new CorrZ it is explicitly removed (see line 1142 of  StRoot/StBFChain/BigFullChain.h)



-Frank






________________________________________________________________________
Frank Geurts   (he/him)
Professor of Physics & Astronomy • Rice University, Houston TX
 T.W. Bonner Nucl. Lab.          • Dept. of Physics & Astronomy
 office 713-348-5314             • web https://urldefense.com/v3/__http://heavyions.rice.edu__;!!P4SdNyxKAPE!BKee6RyFZCJ1Vw7GZV33HXvl3T2FtdUReSYry6FZZIDJqnNP9dBj2zEbAqK0tWqW02WMWDwNsFrMBWo$
________________________________________________________________________

> On Sep 12, 2024, at 7:34 PM, Fisyak, Yuri V <fisyak AT bnl.gov> wrote:
> 
> Hi Frank, can you more specific on your question ? I did not remove anything.
> In https://drupal.star.bnl.gov/STAR/system/files/TPC24c.Export.Mini_.pdf  I have not found a statement matching to your question.
> I have discuss alignment schema on the management meeting https://drupal.star.bnl.gov/STAR/system/files/Tpc%20Alignment%202024.pdf and there are some references in this talk.
> Mathias in his presentation on the last analysis meeting (https://drupal.star.bnl.gov/STAR/system/files/AnalysisMeetingMathiasLabonte.pdf) on Slide 18
> made a statement that the electric field direction is sector depended.  This is the new alignment schema.
>                                                               Yuri Fisyak
> 
> STAR                                           Phone: +1 631 344 3913
> Brookhaven National Laboratory  Fax:    +1 631 344 4206
> 510A/1-161
> http://www.star.bnl.gov/~fisyak       E-mail: fisyak AT bnl.gov
>    From: Frank Geurts <geurts AT rice.edu>
> Date: Thursday, September 12, 2024 at 7:44 PM
> To: Witt, Richard CIV USNA Annapolis <witt AT usna.edu>, Fisyak, Yuri V <fisyak AT bnl.gov>
> Cc: Star-tpc L <Star-tpc-l AT lists.bnl.gov>
> Subject: Re: [[Star-tpc-l] ] Status of PR for New Alignment Library Code
> Thank you Richard. 
>  I have one specific question to Yuri about the removal of the TPC distortion scheme (addressing E-field distortions  caused by misaligned TPC sectors). From the PDF file that accompanied your PR, it is not clear why this has been removed. Can you explain?
>   -Frank
>   
> 
> On Sep 12, 2024, at 12:00 PM, Richard Witt (via star-tpc-l Mailing List) <star-tpc-l AT lists.bnl.gov> wrote:
>  Dear All,
>    In response to a request from Frank at today’s TPC meeting, here is a short summary of the status of the ongoing work to incorporate the new TPC alignment for the FXT production.
>  == The next step toward production for the FXT is the processing of a sample for dE/dx calibration.
>  == A new library, incorporating the new alignment has been produced.
>  == The S&C group must approve that library before production of the calibration sample can proceed.
>  == The S&C group needs approval of the changes made in response to the current pull request associated with the new alignment code before they can approve the the library for use in the calibration production.
>  ==  Due to the number of comments submitted on the PR, it is unclear to the TPC group what further work is needed to receive such approval or even what form that approval takes since the code will not be merged when the PR is resolved (to avoid undesired effects in producing older data sets).
>  ==  The TPC group, therefore, requests a path to approval of the changes made for the PR be defined so we can proceed with requesting S&C approval and subsequently produce a dE/dx calibration sample using the new library.
>  Best Regards,
>   Richard 
>  Sent from my iPad
> -- 
> "Education is the most powerful weapon which you can use to change
> the world."
> 
> --Nelson Mandela
> 
> ~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~~~***~
>  Richard Witt, Professor of Physics     Phone (USNA): 410-293-6675
>     United States Naval Academy         Email: witt AT usna.edu
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