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MuRaVes Technical Meeting

→ Europe/Rome
Description

The videoconference link for the ZOOM connection is:

https://cern.zoom.us/j/93838879891?pwd=MlpLNHY1QS9WK2hWL09LZ3Fud2QwQT09

ID: 938 3887 9891
passcode: 639525

General Matters:

  • Next Muraves General: May 19th in Naples
  • Technical meeting report by Adithyan
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General news:

  • Adithyan will discuss with Michael if he can take over the talk from Yanwen. Action: Send an email as soon as there is an answer.
  • Next week in Naples discuss priorities and tasks assignments

 

Round table:

Adithyan:

  • Selecting 4th plane tracks and good quality tracks resolve the issue of the cluster size 1 being too big.
  • Andrea: better not to use the the chi2 cut on the 4th track, because it's an implicit cut on momentum. Adithyan: I tried with chi2 3p but then I was still having the issue with slustersize 1. Andrea: you can tune the chi2 cut (make it tighter) and probably that will solve the issue. Suggestion: Compare chi2 of 3 points tracks without hit on 4th plane vs 4th point tracks. This should give a value of the chi2 3p threshold that removes most of the junk.
  • Alice: what is the chi2 variable name? Best chi2 4p
  • Problem on plane Y4 observed in the number of 4p tracks with clustersize 2 and path lenght factor do not actually correct, but distort the deposited energy.
  • The path lenght correction is validate in simulation were it works very well.
  • Old photoelectron values were used. Gabor: new photoelectron values are available.
  • Action: Alice: Redo it with new 1phe values, put the codes on GitLab

Dora:

  • Standardize angle definition in Naples
  • Alice: ~7% of the triggering events are 4p particles, but in data it's just 3%, why? Andrea: A certain portion on events in Data is due to backgrounds that are not yet taken into account in the simulation and that in Data are filtered out requiring a 4plane track, so it's normal that the fraction of 4p particles is higher in MC.

 

Gabor:

  • 1phe values available for 100 runs. List released on Matermost and Teams
  • 1 benchmark is made by 24runs, different benchmark for each telescope.
  • Waiting for the MURAVES HDD to run the checks over the rest of the data samples

 

Alice:

  • Run PCA over 24 runs - vulcano oriented - 4p tracks only 
  • 10 PCs has ~60% of the full variance of the data
  • No significant clusters are observed
  • Old 1phe values were used. Action: rerun with new 1phe values and compare results
  • Action: include PCs in reconstructed root file

 

There are minutes attached to this event. Show them.
    • 14:00 → 14:20
      Round table 20m
      Speakers: Adithyan Rajan (Vrije Universiteit Brussels), Alice Biolchini (CP3), Dora Geeraerts, Gábor Nyitrai (UNINA), Samip Basnet, Yanwen Hong (Ghent University)
      MURAVES_TECHNICAL_INTRO_2026_05_13.pdf
    • 14:20 → 14:30
      Updates from Alice 10m
      Speaker: Alice Biolchini (CP3)
      MURAVES_2026_05_13_PCA.pdf
    • 14:30 → 14:40
      Updates from Gabor 10m
      Speaker: Gábor Nyitrai (UNINA)
    • 14:40 → 14:50
      Updates from Yanwen 10m
      Speaker: Yanwen Hong (Ghent University)
    • 14:50 → 15:00
      Updates from Dora 10m
      Speaker: Dora Geeraerts (Vrije Universiteit Brussel)
      20260513_MuravesMeeting.pdf
    • 15:00 → 15:10
      Updates from Adithyan 10m
      Speaker: Adithyan Rajan (Vrije Universiteit Brussels)
      digitilizaton13052026.pdf
    • 15:10 → 15:20
      Updates from Samip 10m
      Speaker: Samip Basnet