Shu's weekly group discussion

Monday 12 Oct 2026, 15:30 → 19:05 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 (TDLI, SJTU)

Online Zoom meeting room:

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

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

15:30 → 15:35 Introduction & Announcements

Meeting's note: []

 

Announcements:

 

---

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
• [...]

[...]

---

Plans: 

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

---

15:35 → 15:45 Status

Speaker: Zhijing Zhang (TDLI, SJTU)

Today's focus:

[DarkSHINE]:

• Fitted the simulated ¹⁷⁶Lu charge spectra for three LYSO crystal sizes and compared them with the experimental charge spectra.
• Used the simulated charge-energy relationship to convert the experimental charge spectra from Q(mV·ns) to reconstructed energy spectra(KeV).
• But the current calibration is simulation-based and will be further validated using known-energy calibration sources.

[STCF]:

• Worked alongside Zhiyu on the Csl scintillation decay time measurements.
• Learned the experimental procedures and data analysis methods.

---

Plans: 

[DarkSHINE]:

• Follow Zhiyu to perform temperature tests and compare the charge-to-energy calibration coefficients at different temperatures.
• Compare the calibration coefficients obtained from intrinsic LYSO radioactivity with those obtained using external radioactive sources.

15:40 → 15:50 Status

Speaker: Kang Yu (TDLI, SJTU)

1. Preparing for my PhD qualifying exams
   1. I have finished reviewing statistical physics
   2. I am preparing for particle physics (experimental)
2. CP task: I will have a discussion about the TagandProbe Framework tomorrow

15:50 → 16:00 Status

Speaker: Linjing Duan (TDLI, SJTU)

ZZγ

• Updated the MC request JIRA ticket following the EWK discussion.

• Rui is working on the 4ℓγ sample; the Sherpa 2.2.16 gridpack has been completed

• Plan to update the JobOptions and gridpack of 4ly sample. Proceed with official production if no further issues arise.

AQP / HGTD

• Reviewed the project background and calibration/fitting workflow; started setting up the software environment on lxplus.

• Plan to prepare slides for a first meeting with Alex next week, covering my current understanding, project objectives, ongoing tasks, and a proposed timeline with estimated start/end dates.

H→γ*γ

• Preparing the CLHCP poster on merged-dielectron identification and performance at ATLAS

• Aim to finish the poster before 20 October.

Others

• Completed OTP and wafer-test shifts last weekend.

• Preparing for the particle physics PhD qualifying exam this Friday.

16:00 → 16:10 Status

Speaker: Jun Wei Lok (TDLI, SJTU)

• Conducted a comprehensive review of previous experimental and simulation steps to resolve ongoing temperature discrepancies.

• Re-tested the op-amp case temperatures across different voltage levels in the laboratory.

• Verified the specific temperature readings (such as junction, case, and board) at various locations within the simulation results.

16:10 → 16:20 Status

Speaker: Zelin Yan (TDLI, SJTU)

16:20 → 16:30 Status

Speaker: Bai-Hong Zhou (TDLI, SJTU)

16:30 → 16:40 Status

Speaker: Xuliang Zhu (TDLI, SJTU)

16:40 → 16:50 Status

Speaker: Zhiyu Zhao (TDLI, SJTU)

[STCF EMC CsI test]:

• Test and analysis with Zhijing Zhang
• Measured the scintillation decay time of CsI unit using different filters. The sample tested with a short-pass filter exhibited faster light emission, which explains our previous approach of using a short-pass filter to improve the time resolution.

 

[CEPC ECAL]:

• Previously, we proposed using the existing ECAL geometry to implement a dual-readout scheme. Our simulations have shown promising results, but we have been unable to obtain reliable test results because the laboratory does not have a high-energy particle source. We are designing a SiPM array readout board to improve light-collection efficiency and detect the Cherenkov light signal. The circuit design is still in progress

 

[DarkSHINE ECAL prototype]:

• I’m still updating the prototype mechanical structure. Discuss electronics status tomorrow.

 

16:50 → 17:00 Status

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

DarkSHINE

- Finished the truth-level analysis for the Fermionic dark matter models.

- Obtained preliminary results, including the exclusion-limit plots.

Next steps:

- Implement the signal process in the DarkSHINE simulation framework.

- Perform a cutflow to select the signal region, assuming the same background as in the dark photon model.

- Obtain the exclusion limit at the detector level.

 

ATLAS HGTD

- Took a wafer test shift last weekend.

- Will take another shift next weekend.

- Preparing a poster for the CLHCP conference.

17:00 → 17:10 Status

Speaker: Matthias Tartarin (TDLI, SJTU)

17:10 → 18:05 REU: Undergraduate Research Discussions

17:10 Status (w/ Linjing&Danning)

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

17:20 Status (w/ Haydar)

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

17:30 Status (w/ Xuliang)

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

Finished

• Completed U-Net training with Xuliang and obtained the trained model weights.

Plan

• Prepare the BDT training dataset using outputs from the trained U-Net.

• Complete BDT training and evaluate its performance.

• Prepare the project report.