Shu's weekly group discussion

Wednesday 30 Sept 2026, 10:00 → 13:35 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N630 - Smart Classroom (Tsung-Dao Lee Institute)

Haidar Mas'ud Alfanda (TDLI, SJTU), Matthias Tartarin (TDLI, SJTU), Zhiyu Zhao

Online Zoom meeting room:

https://cern.zoom.us/j/4042031778

(PIN protected, see message from the group chat announcement)

10:00 → 10:05 Introduction & Announcements

Meeting's note: []

 

Announcements:

• Next best candidate for group meetings: Mondays, 3:30pm Shanghai time. If this is problematic for you, let us discuss it!

 

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Today's focus: 

[1st project/analysis: XXX ]:

• item 1
  • sub-item 1
  • sub-item 2
• item 2
• [...]

[2nd project/analysis: XXX ]:

• item 1
• item 2
• [...]

[...]

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Plans: 

• [optional: indicate which project/analysis it refers to] item 1
• [optional: indicate which project/analysis it refers to] item 2

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10:05 → 10:10 Status

Speaker: Zhijing Zhang (TDLI, SJTU)

Today's focus: 

[DarkSHINE]:

• Performed simulations for LYSO crystals of three different sizes to obtain the energy deposition spectra and charge spectra, mainly tuned the simulation parameters and configurations.

[STCF]:

• Followed Zhiyu to carry out tests of the luminescence decay time of pCsI crystal with different optical filters, so far only raw data have been collected.

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Plans: 

[DarkSHINE]:

• Complete the charge-energy calibration using the peak positions from the simulated spectra, then based on this calibration relation, the experimentally measured charge spectra will be converted into energy spectra.

[STCF]:

• Process the data and fit with a function to extract the luminescence decay time of the crystal.

10:10 → 10:20 Status

Speaker: Kang Yu (TDLI, SJTU)

Kang_Yu_AQP_Intro_20260930.pdf

1. Finished the slides for the AQP introduction (I had mixed it up with the kick-off meeting earlier)
2. Preparing the poster for CLHCP
3. To-do: Prepare for the PhD qualifying exams

10:20 → 10:30 Status

Speaker: Linjing Duan (TDLI, SJTU)

Finished

【ZZγ】

• Presented the Run-3 MC sample request and validation status at the EWK meeting.

• Prepared and shared the EasyJet-based ZZγ analysis framework for feedback

【Hγγ*】

• Started drafting the abstract on the merged-photon study in the H→γγ* analysis

Plans

【ZZγ】

• Revise the MC sample request ticket following the EWK discussion.
• Complete the 4ℓγ 13 TeV gridpack production and the remaining validation plots.
• Follow up on feedback about the EasyJet framework and make any needed updates.

【HGTD】

• Prepare a more detailed introduction and work plan for the discussion.

• Schedule a kick-off meeting with Alex as soon as possible

【Hγγ*】

• Finalize the abstract and prepare the corresponding poster.

10:30 → 10:40 Status

Speaker: Jun Wei Lok (TDLI, SJTU)

Quiescent Current Measurements

I switched to a picoammeter to measure the quiescent current of operational amplifier and the reading now aligns with the datasheet specs. Hence the power of op amp can be obtained correctly.

10:40 → 10:50 Status

Speaker: Zelin Yan (TDLI, SJTU)

[Today's focus:]

• Wlllv analysis: 
  • Check muon iso syst and qcd scale with Aonan.
  • Update INT note in BDT section.
• H2a4b analysis: 
  • Finish status report. 

[Next plans:]

• Wlllv analysis: 
  • Investigate low pt muon iso sys.
  • Update fit result with full systematics.(+parton shower sys)
• FELIX Monitoring: 
  • Test on FELIX card of WinCC-OA panels after Aonan send me a new ssh account.
• H2a4b analysis: 
  • Check data/mc discrepancy in 2024.(total data/mc ~ 0.94, and 2024 ~0.91)
  • Discuss with convenors about CMS results this Thursday.

10:50 → 11:00 Status

Speaker: Bai-Hong Zhou (TDLI, SJTU)

11:00 → 11:10 Status

Speaker: Xuliang Zhu (TDLI, SJTU)

11:10 → 11:20 Status

Speaker: Zhiyu Zhao (TDLI, SJTU)

[STCF EMC CsI test]:

• Finish the first measurement on scintillation decay time of CsI crystals with Zhijing
  • Attenuate the CsI crystal signal to the level of a few photons, and then measure the timing of each single-photon pulse
  • ~37ns scintillation decay time
  • 

 

[DarkSHINE ECAL prototype electronics]:

• Discussed my FPC test results with the USTC team and sent them the specifications of the connector I tested. They will integrate these into the existing design.
• I will then update the mechanical design accordingly

 

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Plans: 

• [STCF EMC CsI test] :
  • Continue to measure the decay time with different optical filters, which will be integrated into the subsequent unit tests
• [DarkSHINE ECAL prototype electronics]：
  • Update the mechanical design accordingly

11:20 → 11:30 Status

Speaker: Haidar Mas'ud Alfanda (TDLI, SJTU)

DarkSHINE

• Obtained the exclusion limit at the truth level for Fermion DM: MCP, EDM, MDM, CR and AM. This figure below shows the 90% C.L. for MCP

• Produced the LUT for the detector simulation. An example for MCP at m_chi = 100 MeV is shown below.

• Plans:
• Compare the limits with other experiments
• Discuss with the theorists
• Full detector simulation

 

ATLAS HGTD

• Participated in a wafer test shift
• Preparing an abstract for the CLHCP

11:30 → 11:40 Status

Speaker: Matthias Tartarin (TDLI, SJTU)

 

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Today's focus: 

 

[Hyy*]:

• Focus on the poster for ATLAS Week as a priority. It is now almost done, I could aim for print today. By the end of the Week-end maximum.

 

[ZZy]:

• Strategy for the week(s) to come has been defined with both Linjing and Rui.
• Addressed comments from last week EWK group meeting. We suggested a timeline to the group yesterday: Aiming for EB in Spring, and paper publication in fall (2027). TDLI internal long term strategy to be put in place to make sure we can meet these expectations, as we are the main driving force of the analysis.
• During GM yesterday: Presented why our TDLI team choose Easyjet and FastFrames. The discussion went well with the other teams. Few items to check but it should not be very difficult. 
• CP task is now validated locally; From TDLI we would have Kang working on it, and Rui joining the effort a bit later.
  We will contact MuonCP conveners to ask for more detail, confirm it with Tairan and Antonio, and start working on this.

 

[VBS_KappaLambda]:

• Validated the new UFO model and the unitarity bounds "restoration" with extremely satisfactory results by using the previous nominal UFO model and forcing similar changes by hand.
• Worked on having the full decay of the W bosons added to the results. Still need a couple of days of work, results to be shared shortly after.
• Depending on the feedbacks, we could be on time to submit these results for 希格斯势 2026 (abstract submission deadline October 15).

 

 

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Plans: 

• [Hyy*]: Plan to focus on the poster for ATLAS Week as a priority. 
• [VBS_KappaLambda]: Detector level studies are still in consideration ; For now I finish having the full channel from the p-p collision to the decay of the W bosons.
• [ZZy] Haven't started Event selection, might start now if time allows.
• [ssWW] and [Full Run-3 Hyy*]: Plans on both of them, but priority ranking lower than the others for now.

11:40 → 12:35 REU: Undergraduate Research Discussions

11:40 Status (w/ Linjing&Danning)

Speakers: Bingxian Li (SPA, SJTU), Jiacheng Shi (SPA, SJTU), Yuning Chen (Zhiyuan College, SJTU), Zhengyang Qian (SPA, SJTU)

11:50 Status (w/ Haydar)

Speakers: Hansheng Ye, Mingyu Huang (Univ. of Manchester (GB))

12:00 Status (w/ Xuliang)

Speaker: Hongyi Chen (University of Nottingham, Ningbo, China)

Finished

• Learned how to use Conifer for model conversion and HLS deployment.

• Prepared a reusable training and conversion pipeline for the U-Net–BDT model.

• Prepared the training configuration for the labelled 500 MeV dataset.

Plan

• Obtain the labelled U-Net output data from Xuliang.

• Train the final XGBoost BDT model using the received data.

• Complete the model validation tests.

• Prepare golden inputs and reference outputs for subsequent HLS verification.