STAR task force for evaluating tracking efficiency uncertainty

[Petr Chaloupka <petrchal AT rcf.rhic.bnl.gov>]

Hello Robert,

thank you very much.
There seems to be a difference between positive and negative eta. This could be
cause by the iTPC sector. Do you have a phi distribution of L tracks for these two selections?

Anyway the simulation  vs data difference is still large. So it is likely difference in kinematics.
I can try different way of making the distribution for the tracks inserted into the simulation.

With best regards,
Petr

On 03. 07. 23 10:28, Robert Líčeník wrote:

Hello Petr and Yuri,

Petr: the requested plots can be found on slide 26 in the updated version here:

https://drupal.star.bnl.gov/STAR/event/2023/06/27/Tracking-Efficiency-Uncertainty-meeting/Cosmics-update

Yuri: sorry for the confusion, I accidentally plotted one of the distributions inversely, but your conclusion is correct, we do not have sector 20, which is the motivation for looking at tracks which avoid this part of TPC.

Thanks,
Robert

On Sat, Jul 1, 2023 at 12:25 AM Fisyak, Yuri V <fisyak AT bnl.gov> wrote:

Hi Robert, I am confused by your slide 23: you plotted L versus K for data, but K versus L for simulation.

For data I see a bump at L ~ 32 which indicate that you don’t have  inner sector (sector 20).

 

                                                              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: Star-tf-trkeff-l <star-tf-trkeff-l-bounces AT lists.bnl.gov> on behalf of Robert Líčeník via Star-tf-trkeff-l <star-tf-trkeff-l AT lists.bnl.gov>
Date: Friday, June 30, 2023 at 4:42 AM
To: Petr Chaloupka <petrchal AT rcf.rhic.bnl.gov>, STAR task force for evaluating tracking efficiency uncertainty <star-tf-trkeff-l AT lists.bnl.gov>
Subject: Re: [Star-tf-trkeff-l] Tracking Efficiency Uncertainty meeting June27, 2023, 10:00 AM

Hello,

based on our conversation on Tuesday,

I have added the comparison of efficiency for data and simulation on slide 25 here:

https://drupal.star.bnl.gov/STAR/event/2023/06/27/Tracking-Efficiency-Uncertainty-meeting/Cosmics-update

These efficiencies are for tracks from only one half of the TPC (hopefully without sector 20), with Z > 0 and eta > 0. There is a significant difference still.

Thanks,
Robert

 

On Mon, Jun 26, 2023 at 3:44 PM Petr Chaloupka via Star-tf-trkeff-l <star-tf-trkeff-l AT lists.bnl.gov> wrote:

Dear All,

Please join our meeting tomorrow at 10:00 New York time.
Please upload any material for discussion to the drupal page:
https://drupal.star.bnl.gov/STAR/event/2023/06/27/Tracking-Efficiency-Uncertainty-meeting


With best regards,
Petr


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