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[Aschenauer Elke-Caroline <elke AT bnl.gov>]

thanks, too many emails.

Cheers elke

On Jan 29, 2022, at 14:59, Xu Sun <sunxuhit AT gmail.com> wrote:

Hi Elke,

I replied to your email sent to the forward list.

Please find the slides attached.

Best,

Xu

On Sat, Jan 29, 2022 at 2:55 PM Aschenauer Elke-Caroline <elke AT bnl.gov> wrote:

Dear All,

maybe I missed an email, but Xu can you sent me the latest version in pptx.

Thanks a lot

elke

On Jan 28, 2022, at 20:29, Yi Yang <yiyang AT ncku.edu.tw> wrote:

Hi Zhenyu,

Thanks a lot for the plots. I also saw Xu's slides and they look great!

Happy Chinese New Year!

Cheers,

Yi

+++++++++++++++++++++++++++++++++++++++++++++++++++
Yi Yang, Associate Professor 
Department of Physics 
National Cheng Kung University 
Tainan, 701 Taiwan 
E-Mail: yiyang AT ncku.edu.tw 
Tel: +886-6-2757575 ext.65237 
Fax: +886-6-2747995
Group Web: http://phys.ncku.edu.tw/~yiyang 
+++++++++++++++++++++++++++++++++++++++++++++++++++

On Sat, Jan 29, 2022 at 12:13 AM Ye, Zhenyu <yezhenyu AT uic.edu> wrote:

There are some plots we can consider adding https://drupal.star.bnl.gov/STAR/system/files/yezhenyu_FST_20211228.pdf

Please note that the plots (page 3, right column) are obtained from the following procedure

1. Separate R into 2 regions (inner and outer), and phi into 128 regions (each with 12 strips)
2. Require a hit on disk 1 and a hit in the same R-phi region on disk 3 (the number goes to the denominator)
3. Look for a hit on disk 2 in the above R-phi region (numerator)
4. Divide 3 by 2

This study was to check the relative efficiency of FST during HV scan, not the absolute efficiency. The latter is expected to be above 95% based on prototype cosmic testing results using IST. The difference between the expected vs what we see can be explained by 
1. Finite phi bin width (I think the effect is ~1/12)
2. Ideal positions assumed 
To get the true absolute efficiency, we will need proper alignment and tracking including sTGC and PV.

Zhenyu

> On Jan 28, 2022, at 9:27 AM, Yi Yang <yiyang AT ncku.edu.tw> wrote:
> 
> Dear Xu,
> 
> Thanks a lot for the slides. They look good, but I would think that it will be good to have some performance plot, like efficiency? 
> 
> Cheers,
> Yi
> 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> Yi Yang, Associate Professor 
> Department of Physics 
> National Cheng Kung University 
> Tainan, 701 Taiwan 
> E-Mail: yiyang AT ncku.edu.tw 
> Tel: +886-6-2757575 ext.65237 
> Fax: +886-6-2747995
> Group Web: http://phys.ncku.edu.tw/~yiyang 
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> 
> 
> On Fri, Jan 28, 2022 at 10:56 PM Xu Sun <sunxuhit AT gmail.com> wrote:
> Hi All,
> 
> As requested by Elke, I have prepared two slides for FST.
> Please find it attached.
> 
> Comments and suggestions are welcome.
> 
> Best,
> 
> Xu
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<FstRun22Extension.pptx>

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 /    '. |        Elke-Caroline Aschenauer  (she/her/hers)      =

 |       `,                                                      -

  \,_  `-/        Brookhaven National Lab                         +

  ,&&&&&V         Physics Dept.,            25 Corona Road         =

 ,&&&&&&&&:       Bldg. 510 /2-195          Rocky Point, NY,        -

,&&&&&&&&&&;      20 Pennsylvania Avenue                 11778       +

|  |&&&&&&&;\     Upton, NY 11973                                     =

|  |       :_) _  Tel.:  001-631-344-4769   Tel.:   +1-631-569-4290    -

|  |       ;--' |                           Cell-USA:  +1-757-2565224   +

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