Hi Flemming, this is upper cut. Typical cluster size for dEdx > 10 keV/c and
η < -2 is about 20 time buckets.
The main point here is
η < -2.
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:
videbaek <videbaek AT bnl.gov>
Date: Saturday, March 2, 2024 at 4:11 PM
To: Fisyak, Yuri V <fisyak AT bnl.gov>
Cc: yulou <yulou AT mail.ustc.edu.cn>, ephy AT ustc.edu.cn <ephy AT ustc.edu.cn>, Star-tpc L <Star-tpc-l AT lists.bnl.gov>, Yuanjing Ji <yuanjingji AT lbl.gov>, Vassiliev, Iouri Dr. <I.Vassiliev AT gsi.de>, xuyue AT impcas.ac.cn <xuyue AT impcas.ac.cn>
Subject: Re: [Star-tpc-l] Check_DifferenceOfAcceptance_FXTDataProducedByDifferentStarLibrary(P21id and P23ie)
Hi Yuri,
Question: is it the low cut or the high cut that caused this difference.
It would be good to see the typical distribution of the cluster sizes.
At least looking at the online plots
the typical cluster witdh i.e integrated over all events peaks at
width=4 with only little and clearly a high tail.below. Of course this
can be different for highly ionizing particles.
On 2024-03-02 15:28, Fisyak, Yuri V via Star-tpc-l wrote:
> Hello Yulou and all,
>
> * I have tracked down the difference between SL21d and SL23e (new
> dE/dx calibration) for high dE/dx at η < -2.
> * The difference is coming from cluster size cut in time buckets (
> min = 3.5, max = 16.5) from TpcnTbk table
>
> ================================================================================
>
>
> MySQL [Calibrations_tpc]> select * from TpcnTbk where elementID = 1
> order by beginTime;
>
> +--------+---------------------+--------+-----------+---------------------+---------------------+--------+----------+----------+------+------+-------+------+--------------+--------------+---------------+---------------------+
>
>
> | dataID | entryTime | nodeID | elementID | beginTime
> | endTime | flavor | schemaID | deactive | type | idx
> | nrows | npar | OffSet | min | max | a
> |
>
> +--------+---------------------+--------+-----------+---------------------+---------------------+--------+----------+----------+------+------+-------+------+--------------+--------------+---------------+---------------------+
>
>
> | 1 | 2022-05-31 21:34:22 | 112 | 1 | 2018-12-20
> 00:00:00 | 2037-01-01 00:00:00 | ofl | 2 | 0 | 200 |
> 1 | 1 | 0 | 0.0000000000 | 3.5000000000 | 16.5000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> | 101 | 2024-03-02 19:42:00 | 112 | 1 | 2018-12-20
> 00:00:01 | 2037-01-01 00:00:00 | ofl | 2 | 0 | 0 |
> 0 | 0 | 0 | 0.0000000000 | 0.0000000000 | 0.0000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> | 51 | 2022-05-31 21:34:25 | 112 | 1 | 2019-11-15
> 00:00:00 | 2037-01-01 00:00:00 | sim | 2 | 0 | 0 |
> 0 | 0 | 0 | 0.0000000000 | 0.0000000000 | 0.0000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> +--------+---------------------+--------+-----------+---------------------+---------------------+--------+----------+----------+------+------+-------+------+--------------+--------------+---------------+---------------------+
>
>
> 3 rows in set (0.00 sec)
>
> * This cut is coming from analysis of collider data, and it should
> not be applied for fixed target data.
> * With deactivated cut high dEdx at η < -2 has appeared
> (/gpfs01/star/subsys-tpc/fisyak/TbyT/TbyT_SL21d_SL23e/SL23m/st_physics_21036008_raw_3500010*.root).
> * I have deactivated this cut as today,
>
> MySQL [Calibrations_tpc]> select from_unixtime(1709409405);
>
> +---------------------------+
>
> | from_unixtime(1709409405) |
>
> +---------------------------+
>
> | 2024-03-02 19:56:45 |
>
> +---------------------------+
>
> 1 row in set (0.00 sec)
>
> * MySQL [Calibrations_tpc]> select * from TpcnTbk where elementID =
> 1 order by beginTime;
>
> +--------+---------------------+--------+-----------+---------------------+---------------------+--------+----------+------------+------+------+-------+------+--------------+--------------+---------------+---------------------+
>
>
> | dataID | entryTime | nodeID | elementID | beginTime
> | endTime | flavor | schemaID | deactive | type | idx
> | nrows | npar | OffSet | min | max | a
> |
>
> +--------+---------------------+--------+-----------+---------------------+---------------------+--------+----------+------------+------+------+-------+------+--------------+--------------+---------------+---------------------+
>
>
> | 151 | 2024-03-02 20:03:00 | 112 | 1 | 1995-01-01
> 00:00:00 | 2037-01-01 00:00:00 | ofl | 2 | 0 | 0
> | 0 | 0 | 0 | 0.0000000000 | 0.0000000000 | 0.0000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> | 1 | 2022-05-31 21:34:22 | 112 | 1 | 2018-12-20
> 00:00:00 | 2037-01-01 00:00:00 | ofl | 2 | 1709409405 | 200
> | 1 | 1 | 0 | 0.0000000000 | 3.5000000000 | 16.5000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> | 101 | 2024-03-02 19:42:00 | 112 | 1 | 2018-12-20
> 00:00:01 | 2037-01-01 00:00:00 | ofl | 2 | 1709409405 | 0
> | 0 | 0 | 0 | 0.0000000000 | 0.0000000000 | 0.0000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> | 51 | 2022-05-31 21:34:25 | 112 | 1 | 2019-11-15
> 00:00:00 | 2037-01-01 00:00:00 | sim | 2 | 1709409405 | 0
> | 0 | 0 | 0 | 0.0000000000 | 0.0000000000 | 0.0000000000 |
> 0,0,0,0,0,0,0,0,0,0 |
>
> +--------+---------------------+--------+-----------+---------------------+---------------------+--------+----------+------------+------+------+-------+------+--------------+--------------+---------------+---------------------+
>
>
> 4 rows in set (0.00 sec)
>
> * I am planning to make modification as git PR in
> StarDb/Calibrations/tpc to eliminated TpcnTbk and TpcnPad
>
> 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: yulou <yulou AT mail.ustc.edu.cn>
> Date: Friday, March 1, 2024 at 2:10 AM
> To: Fisyak, Yuri V <fisyak AT bnl.gov>
> Cc: Yuanjing Ji <yuanjingji AT lbl.gov>, Vassiliev, Iouri Dr.
> <I.Vassiliev AT gsi.de>, ephy AT ustc.edu.cn <ephy AT ustc.edu.cn>,
> leung AT physi.uni-heidelberg.de <leung AT physi.uni-heidelberg.de>,
> xdong AT lbl.gov <xdong AT lbl.gov>, xuyue AT impcas.ac.cn
> <xuyue AT impcas.ac.cn>, hexh AT impcas.ac.cn <hexh AT impcas.ac.cn>
> Subject: Re:
> Check_DifferenceOfAcceptance_FXTDataProducedByDifferentStarLibrary(P21id
> and P23ie)
>
> Hi Yuri，
> Thank you very much for your work.
> Please let us know if we can help.
>
> Best wishes
> Yulou
> _______________________________________________
> Star-tpc-l mailing list
> Star-tpc-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/star-tpc-l
--
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
|
