Star-tpc-l mailing list

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

Hi Flemming and All, it looks like that I made a “FALSE ALARM”. I am sorry.

Without Data Base double peak structure has  disappeared.

See https://www.star.bnl.gov/~fisyak/star/Tpc/Alignment/T0/

At DEV2_newDB7, disable starTrigDelay correction from Data base

I will redo tuning starTrigDelay.

 

 

                                                              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: Fisyak, Yuri V <fisyak AT bnl.gov>
Date: Thursday, September 12, 2024 at 6:13 PM
To: Videbaek, Flemming <videbaek AT bnl.gov>, Star-tpc L <Star-tpc-l AT lists.bnl.gov>
Subject: Re: [[Star-tpc-l] ] timing shifts

Hi Flemming,

      For dAu200_2021 it was two interruptions with 26p5GeV_fixedTarget_2021.

There is a possibility that dAu200_2021 takes parameters from 26p5GeV_fixedTarget_2021.

I am checking this right now by removing any adjustments for trigger time delay from DB.

                                                                                   Date              Time

  {"dAu200_2021",                                             20210630,  22849, "y2019", "dAu200_2021"               },

  {"26p5GeV_fixedTarget_2021e",             20210703,  10650, "y2019", "26p5GeV_fixedTarget_2021"  },

  {"dAu200_2021b",                                          20210703,  53033, "y2019", "dAu200_2021"               },

  {"26p5GeV_fixedTarget_2021f",              20210703, 230657, "y2019", "26p5GeV_fixedTarget_2021"  },

  {"dAu200_2021c",                                          20210704,  34046, "y2019", "dAu200_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: star-tpc-l-request AT lists.bnl.gov <star-tpc-l-request AT lists.bnl.gov> on behalf of videbaek <videbaek AT bnl.gov>
Date: Thursday, September 12, 2024 at 6:05 PM
To: Star-tpc L <Star-tpc-l AT lists.bnl.gov>
Subject: re: [[Star-tpc-l] ] timing shifts

Hi Yuri,
I looked briefly at the conditions that the dAu was run between day 183
and 184.
As I can tell there is no recorded change in trigger setup. i.e. the
tier-1 file has same name
and thus according to convention has same parameters. So I think it is
unlikely that the external trigger timing has changed.
Is it possible that there is a calibration parameters that has been used
in reconstruction is changing because there was a FXT target run
in-between day 183 and 184? just asking

Depending on your answer we could contact JH and Akio.

best Flemming


--
Flemming Videbaek
senior scientist, emeritus
videbaek @ bnl.gov
Brookhaven National Lab
Physics Department
Bldg 510D
Upton, NY 11973

phone: 631-344-4106
cell     :  631-681-1596