sPHENIX cold QCD topical group

["Riedl, Caroline" <criedl AT illinois.edu>]

Hi Devon,

Thanks for preparing a nice poster for SPIN! I have a few comments, most of them minor.

• General: It would be good if you could add some mentioning of the 2024 pp running (for example, in the center of the RHIC sketch?). In my view, you don't have to quote an "expected total lumi" number in the current situation; but if somebody asks, you could quote from the table in on page 8 of Dennis' talk at the PAC meeting: https://indico.bnl.gov/event/20331/contributions/79936/attachments/49639/84911/dvp-PAC-9-11-23.pdf
  Having said this, the projection plots you show are for the expected lumi that was assumed to be correct for several years, that is, 62pb-1. You can compare this to the rightmost column in the mentioned table. One can (roughly) say that the error bars (which are statistical only) in the projection plots you show have to be scaled up by a factor of 25% (because of the 50% of reduction in lumi ==> error goes with the sqrt)
  
  
• Top left box:

• The A_N formula is hidden a tiny bit at the bottom

Middle left box:

• SPHENIX --> sPHENIX 🙂

Bottom left box: 

• The DiIFF projection plot is not in the BUP 2023 (which you cite). Is it contained in any of the other references you cite? We have to make sure it is a public plot. I believe that SashaB made this plot and the last reference I found to it was the CM Jan 2022, https://indico.bnl.gov/event/14039/contributions/58406/attachments/39124/64698/sPHENIX_CollMeet_7jan2022.pdf . Let me know if I can help with pinning down the source.
• In addition to the general comment above about scaling the error bars, in the DiIFF plot you need to entirely ignore the blue points, since they are for eta up to 2... which we don't have (|eta_max|=1.1)

Top right: 

• The mentioning of "CW" and "CCW" - is it needed? These abbreviations do not appear anymore after.
• The sketch with the colliding bunch patterns is nice. Is there one for collisions at IP8 too? 🙂 Could you easily tweak the sketch to make one? 
• Also related to the RHIC sketch - you mention "RHIC" only one time, in the references. Add/ place it somewhere close to the sketch. 
• Some of the figures have really poor resolution, which may be too well visible when printed... (for example but not limited to the A_N plots)

Middle right: 

• Are the PHENIX monitoring plots public? 
  ==> I don't know. Could one of the PHENIX collaborators comment please? 

Best,

Caroline

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Caroline Riedl

Research Associate Professor

Department of Physics, UIUC

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From: sPHENIX-cold-QCD-l <sphenix-cold-qcd-l-bounces AT lists.bnl.gov> on behalf of Devon Loomis via sPHENIX-cold-QCD-l <sphenix-cold-qcd-l AT lists.bnl.gov>
Sent: Friday, September 15, 2023 15:45
To: sphenix-cold-qcd-l AT lists.bnl.gov <sphenix-cold-qcd-l AT lists.bnl.gov>
Subject: [Sphenix-cold-qcd-l] Poster Draft for Spin 2023

 

Hello all,

I am attaching a draft of my poster "Preparations for spin physics at sPHENIX" that will be presented at Spin 2023 . Any comments/suggestions would be greatly appreciated.

Thanks,

Devon Loomis