STAR QA Board

[Xin Dong <xdong@lbl.gov>]

Hi Yingjie, and Frank,

Thank Yingjie and Kaifeng for the detail comparison plots. I see the two productions have a slightly different choice in the picoDst vertex option

SL20c:  PicoVtxMode:PicoVtxVpdOrDefault TpcVpdVzDiffCut:5

SL18c:  PicoVtxDefault

This can (most likely) explain the minor differences Yingjie observed.

For MB events, since it is based on the VPD-coincidence, the new SL20c option would be even preferred I think.

Yingjie, could you please do a comparison for ht_11 triggered events? It is a bare HT trigger, no MB (VPD) requirement. But since the new SL20c option only chooses the vertex correlated with VzVpd when available, I don't think this will hurt and would still be the preferred option (in my view). It would be better to take a look at the comparison to have a complete understanding.

Thanks and Regards

/xin

On Wed, Oct 21, 2020 at 6:11 PM Yingjie Zhou via STAR-QAboard-l <star-qaboard-l@lists.bnl.gov> wrote:

Hi All,

I make a comparison to the PicoDst between SL18c and SL20c.
Please find my slides at the below link.
https://drupal.star.bnl.gov/STAR/system/files/201022HF_54p7.pdf

Your feedback is greatly appreciated.
Thanks,
Yingjie


在 2020-10-16 12:00，Frank Geurts via STAR-QAboard-l 写道：
> Dear All,
>
> Let’s use our QA meeting, tomorrow at noon (EDT). Please use the
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> -Frank
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--

===========================
Xin Dong
Staff Scientist, Nuclear Science Division
Lawrence Berkeley National Laboratory
MS70R0319, One Cyclotron Road
Berkeley, CA 94720, USA
Tel: +1-510-486-4121
Email: XDong@lbl.gov
===========================