sPHENIX is a new detector at RHIC.

["Perepelitsa, Dennis" <dvp AT bnl.gov>]

Hi Weihu,

Thanks for the draft - I had two small suggestions: 

* “two layers of hadronic calorimetry” -  “two layers” is pretty vague and may not mean much to the reader. You could say something like “and hadronic calorimetry providing multiple nuclear interaction lengths” (?) or “to measure the full jet energy” or similar… 

* “collecting 100 billion unbiased p+p collisions, along with an additional sample of minimum-bias Au+Au collisions” - how about “collecting 100 billion unbiased p+p collisions and 107/pb sampled with rare triggers for physics measurements, as well as a small commissioning Au+Au dataset in anticipation of high-luminosity Au+Au running in Run-25” 

Please also remember to circulate your draft slides seven working days before the start of the conference! [1]

Dennis

[1] https://wiki.sphenix.bnl.gov/index.php?title=Speakers_Bureau 

On Feb 5, 2025, at 12:03 AM, Weihu Ma <sphenix-l AT lists.bnl.gov> wrote:

Dear All,

There is a local conference coming (list below) in China: The 20th National Conference on Medium and High Energy Nuclear Physics (Apr. 24-28, 2025, Shanghai, China):https://indico.ihep.ac.cn/event/23976/

I'm planning to submit an abstract about sPHENIX status to the meeting. The abstract is the following, please review it. The submit deadline is March 1st.

Title: The status of the sPHENIX experiment at RHIC

Abstract: sPHENIX started running in Spring 2023 at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. It performs unprecedentedly high-precision measurements in 200 GeV p+p and Au+Au collisions. Built around the excellent BaBar superconducting solenoid, the central detector consists of a silicon pixel vertexer adapted from the ALICE ITS-2 inner barrel design, a silicon strip detector with single event timing resolution, a compact TPC, novel EM calorimetry, and two layers of hadronic calorimetry. The plan is to use the combination of electromagnetic calorimetry, hermetic hadronic calorimetry, precision tracking, and the ability to record data at high rates without trigger bias to make precision measurements of Heavy Flavor and jets to probe the Quark Gluon Plasma (QGP) formed in heavy ion collisions. These measurements will have a kinematic reach that not only overlaps those performed at the LHC, but extends them into a new, low-pT regime. In the 2024 run, sPHENIX has completed full commissioning, collecting 100 billion unbiased p+p collisions, along with an additional sample of minimum-bias Au+Au collisions. The sPHENIX physics program, its potential impact, and its recent run status will be discussed in this talk.

Best,

Weihu

Dennis V. Perepelitsa
Associate Professor, Physics Department
University of Colorado Boulder