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[videbaek <videbaek AT bnl.gov>]

Hi Yuri,

Thanks for finding the issue quickly, so you can proceed.

best F


On 2024-09-13 11:54, Fisyak, Yuri V wrote:
> 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/ [1]
>
> 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
>
> Links:
> ------
> [1] https://www.star.bnl.gov/~fisyak/star/Tpc/Alignment/T0/

--
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