sPHENIX MAPS tracker discussion

["Huang, Jin" <jhuang AT bnl.gov>]

Hi Everyone,

 

Thanks for the updates and discussions in the topical group meeting tonight. Please find the minutes below and on the agenda page. Please also feel free to discuss more on the email thread and on the MatterMost chats

 

 

Participants: Cameron Dean, Deepa Thomas, Guannan Xie, Hideki Okawa, Jin Huang, Long Ma, Ming Liu, Sanghoon Lim, Sourav Tarafdar, Weihu Ma, Xin Dong, Yuanjing Ji, Zhaozhong Shi, Yasser Corrales Morales

 

 

Welcome - Hideki & Jin

 

Check out and join the list of MatterMost chat channels: 

https://wiki.bnl.gov/sPHENIX/index.php/Heavy_Flavor_Topical_Group#MatterMost_Chats 

 

Jin: Updating projection plot with new luminosity projection for BUP this week. 

 

Ming: Streaming readout in year-1, if we decide to take p+p jet-calibration data?

Jin: We have the hardware, but it could be challenging to make it fully working in few weeks of p+p data taking. Nonetheless, it helps to commission the streaming DAQ for the year-2 physics data taking. 

 

 

B_s update - Zhaozhong Shi

Summary: the first exercise with the background machinery for B_s by adopting the D0/Lc fast simulation tool from Yuanjing.

 

Slide 2: 

Xin: please also consider and validate the oscillation loss of B_s <-> B_s_bar, or simulate both

 

Slide 5: 

Yuanjing, Yasser: We should use identified particle spectra in generation and smearing. The correlated number of particle species. 

 

Slide 10:

Jin: RHIC spectra and sPHENIX pT resolution and DCA 2D lineshape, so best estimation of the sPHENIX performance at 200 GeV AuAu collisions

 

Slide 11: 

Zhaozhong: the cos(theta) distribution is unexpected (bipolar)

Xin: Please check signal truth B_s cos(theta) distribution first

 

Slide 12:

Xin: Please zoom-in for the Phi mass difference histogram, as the resolution should be much better than the bin size

 

Jin: How background normalization is handled in the fast simulation setup? 

Xin: The fast simulation generates the entire AuAu event that is aimed to match charged particle production. Normalization is to scale up the background to the number of collision events. 

 

 

DD correlation - Long Ma

Summary: starting the exploration of D-D correlation and discussed the initial outlook and plan. 

 

Slide 5:

Jin: Geant4 simulation of the p+p background could be challenging. Suggest starting with the fast simulation for p+p to get an estimation for the background for p+p too. 

 

Slide 9: 

Xin, Ming, Long: AuAu D-D pair are correlated pairs, there are also higher non-correlated background.

 

General: 

Deepa: Would you like to look at D0 D+ correlation? D+ could bring more statistics by capturing more BR. 

Long: Yes. Great suggestion.

 

 

 

MVTX for EIC? - Ming Liu

Summary: restacking MVTX fits EIC well.

 

Ming: Eta coverage is 1.5-2.0 with MVTX moved to the outer radius to accommodate the EIC beam pipe. But higher eta would go through the service barrel that is substantial as included in the sPHENIX simulation. 

 

Jin: how much work to redesign the MVTX connections? 

Ming: would reuse the same active components but different mechanical structures in cable routing. 

 

 

 

______________________________

 

Jin HUANG

 

Physicist, Ph.D.

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________

 

From: sPHENIX-HF-jets-l <sphenix-hf-jets-l-bounces AT lists.bnl.gov> On Behalf Of Huang, Jin
Sent: Sunday, August 16, 2020 11:19 AM
To: sphenix-hf-jets-l <sphenix-hf-jets-l AT lists.bnl.gov>
Cc: sphenix-maps-l AT lists.bnl.gov
Subject: [Sphenix-hf-jets-l] [Monday 7PM ET] bi-weekly heavy flavor topical group meeting

 

Hi Everyone

 

This is a reminder for next HF topical group meeting Aug 17 Monday 7PM ET.

 

Agenda for this meeting will include:

• Quick B_s update by Zhaozhong Shi (MIT) and Cameron Dean (LANL)
• Exploring D-D correlation by Long Ma (Fudan)
• MVTX for EIC by Ming Liu (LANL)

Please find the agenda at https://indico.bnl.gov/event/9131/ and bluejeans coordinate: https://bluejeans.com/428810790

 

Welcome to volunteer for or suggest topics to the study list:

https://wiki.bnl.gov/sPHENIX/index.php/Heavy_Flavor_Topical_Group#Study_plans

 

Looking forward to talking to you. 

 

Cheers

 

Jin

 

 

 

______________________________

 

Jin HUANG

 

Physicist, Ph.D.

Brookhaven National Laboratory

Physics Department, Bldg 510 C

Upton, NY 11973-5000

 

Office: 631-344-5898

Cell:   757-604-9946

______________________________