sPHENIX cold QCD topical group

["Bazilevsky, Alexander" <shura AT bnl.gov>]

Dear Zhongling (I'm also forwarding it to sPHENIX cold-qcd-l list),

Thanks for the draft. The general structure is good. Some polishing is still needed. A few comments/suggestions:

Global:
You don't show any physics projection plots for sPHENIX, but we do have a few. Also you don't comment anything about the physics measurements with forward upgrade. Having mentioned that, I'd suggest you slightly change the presentation flow: after "Introduction" and "sPHENIX strength (barrel acceptance detector!), discuss what physics we plan to do (two slides with proj. plots in my presentation are #9 and 14), and briefly mention in words other channels; then go to "Forward upgrade" (this panel looks good), and then again comment on physics to be address with it (some material is in my slides 19, 21, 22). Just select the most important plots which would fit best in your presentation.

"Introduction":
One of the key designed characteristics of sPHENIX is high DAQ rate capability of 15 kHz; it should be mentioned somewhere. Also it would be useful to put eta range of sPHENIX coverage and mag. field strength (1.4T): it is a barrel acceptance detector, and it is natural to think of its expansion to forward region - a logical connection in your presentation between baseline detector and forward upgrade

"sPHENIX strength":
1. The key observable for which sPHENIX is designed is jet. Something should be included to illustrate it, e.g. resolution results from HCal test beam data (grab it from someone's recent presentation or sPHENIX CDR)
2. Each plot should carry the "sPHENIX strength". For pi0 merging plot, I'd say "Discriminate gamma/pi0 up to pT~20 GeV/c"

"Spin physics" and "Initial & final state modifications"
As I mentioned above, you don't show any sPHENIX proj. plot

Regards,
Sasha.

-------- Forwarded Message -------- Subject: Cold QCD poster for Initial Stages Date: Sun, 16 Jun 2019 14:41:43 -0400 From: Zhongling Ji <zhongling.ji AT stonybrook.edu> Reply-To: PHENIX Spin -- Physics Working Group <phenix-spin-l AT lists.bnl.gov> To: PHENIX Spin -- Physics Working Group <phenix-spin-l AT lists.bnl.gov>

Dear All,

    I will give a poster on Initial Stages. It mainly based on Sasha's slides https://www.bnl.gov/aum2019/content/workshops/Workshop_1c/sasha_bazilevsky.pdf
    Thank you very much for any suggestions and comments.

Best regards,
Zhongling

Attachment: is2019-poster.pdf
Description: Adobe PDF document

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