sPHENIX is a new detector at RHIC.

[Ross Corliss <ross.corliss AT stonybrook.edu>]

Dear Hugo,

Thanks for the comments.  I have updated the indico ( https://indico.bnl.gov/event/13919/contributions/57667/attachments/40426/67531/QM22_sPHENIX_Distortions.2022.04.08.pdf ) with the exception of the pictures of the x-ray test box.  Replies are inline below.

-Ross

==========
Dr. Ross Corliss
Research Assistant Professor
Center for Frontiers in Nuclear Science

Stony Brook University

virtual office:  https://stonybrook.zoom.us/my/rossoffice?pwd=ZmZ2SlRIMVFvUUJwbUkyOVNVTmE5QT09

On Apr 4, 2022, at 1:34 PM, Hugo Pereira Da Costa via sPHENIX-l <sphenix-l AT lists.bnl.gov> wrote:

Hi Ross,

Thanks for the poster.

A couple of comments below

- I am not sure about adding "spacecharge" in the poster title, since you also address static distortions in your slide 3. maybe just "distortions" ?

Happily removed.  It was technically in the title as submitted, but I would rather have it gone, and I don't think they'll object.

- except indirectly in slide 4 you do not provide a magnitude of the expected distortions (static, average and fluctuations). Might be worth adding somewhere (ALICE folks could be curious)

I have added histograms of the estimated distortions.

- could you replace the bottom right figure of slide 2 with the one attached ? This was a remark from Tom that the azimutal distortions in the TPC cannot have the same sign for all radii. The same plot is featured in Yeonju's talk and Audrey's poster.

Actually already did this, borrowing from Audrey's, but I have gladly upgraded to your higher-resolution source.

(same remark in slide 4)

Slide 4: the lower plot has poor resolution. Can you get it from the second figure attached (you might need to screen capture the pdf to a more image friendly format)

Updated.  Thank you kindly.

Slide 5: "scaled by measured IBF gain"

I mean this as present tense 'scale', just like 'integrate' and 'combine' in the adjacent lines.

Do I get it right that said measurement is a "prior" measurement as opposed to in situ ? or are there plans to measure those during data taking. If the former, then it might be worth adding it, because it might casue additional uncertainties in the model.

Yes, we will measure these with the x-ray setup here at Stony Brook.  I will add a description and picture in the available space on the slide when I have a chance to get down to the lab.

Thats' all I have,

Hugo

On 4/4/22 05:00, Ross Corliss via sPHENIX-calibration-l wrote:

Dear All,

I have added my draft poster/slides to the indico page that seems to be collecting them:  https://indico.bnl.gov/event/13919/ , https://indico.bnl.gov/event/13919/contributions/57667/attachments/40426/67503/QM22_sPHENIX_Distortions.2022.04.08.pdf

I would welcome comments and suggestions.

-Ross

==========
Dr. Ross Corliss
Research Assistant Professor
Center for Frontiers in Nuclear Science

Stony Brook University

virtual office:  https://stonybrook.zoom.us/my/rossoffice?pwd=ZmZ2SlRIMVFvUUJwbUkyOVNVTmE5QT09

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