Weekly Meeting

Monday 4 May 2026, 09:00 → 09:30 Europe/Rome

Davide Fiorina (GSSI & INFN)

Description

https://cern.zoom.us/j/9553247390

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● DavideP report

First GEM stack in N2 atmosphere since 29/04

HV On since 30/04 (2.5 kV/cm + VGEM = 500V) with local version of DAQ

Today 15.30 Meeting with referee: https://agenda.infn.it/event/52170/

● Elisabetta report

LIME Copper storage: I will take a photo of the target zone where to stock the LIME Copper and ask again to Jan Harms

● DavideF report

Cathodes: shipment of the new cathodes is ongoing. Assembly should be scheduled as soon as they arrive at LNF.
Second GEM stack: assembled successfully, but a short on the second foil was identified. A dedicated tool is needed to isolate the shorted GEM sector and resolve the issue; afterwards, tensioning and validation will proceed.
Field cage / Nylon66 structure: the field cage has been unmounted because the short Nylon66 bar positions interfere with the source calibration path. The new positions have been defined; Daniele now needs to update the original CAD, after which the pieces will be machined, cleaned, and remounted, hopefully within this week.
Field cage foil: the test assembly was successful. Once the Nylon66 bars are retrofitted, the final installation can proceed.
Copper box drawings: Cesidio is expected to provide feedback this week on the constructive drawings of the copper box.

● Giorgio report

Analysis

Meeting with Australians postponed to this week
Melba is working on finding NR on Run4 lowgain
New student from Brasil is trying to move on from Giuseppe's work on track finding from images
More quantitative measurement of saturation of V-bonded GEMs and improvement from previous GEMs

LNF

PMT testing is over
20 characterized PMTs and working 6 were old and broken by helium

● Stefano report

Trigger Module:

integration of the MIDAS frontend: done and tested
⁠⁠integration of the software update as a consequence of the trigger update: done and testes
Channel 0 is not properly being processed: Herman believes it's a firmware related issue and he's working on that
AND and OR logic: not working as expected, Herman is working on that
TRG EXT function: the output signal shows very annoying bounces that must be solved as TRG EXT is a feature we are probably going to use a lot

● Giulia report

Improved LIME simulation: New source window provided by DavideP. I'm trying to run a simulation to see the effect
I am asking for feedback about Emanuele's work on the data corrections
I talked with Fabrizio and explained to him how to sum the CYGNO04 simulation, he will try to run some of them and I will try to analyse them

There are minutes attached to this event. Show them.

- 09:01 → 09:02
  
  DavideP report 1m
  
  Speaker: Davide Pinci (Istituto Nazionale di Fisica Nucleare)
  
  First GEM stack in N2 atmosphere since 29/04
  
  HV On since 30/04 (2.5 kV/cm + VGEM = 500V) with local version of DAQ
  
  Today 15.30 Meeting with referee: https://agenda.infn.it/event/52170/
- 09:02 → 09:03
  Elisabetta report 1m
  
  Speaker: Elisabetta Baracchini (Istituto Nazionale di Fisica Nucleare)
  LIME Copper storage: I will take a photo of the target zone where to stock the LIME Copper and ask again to Jan Harms
- 09:03 → 09:04
  DavideF report 1m
  
  Speaker: Davide Fiorina (GSSI & INFN)
  Cathodes: shipment of the new cathodes is ongoing. Assembly should be scheduled as soon as they arrive at LNF.
  
  Second GEM stack: assembled successfully, but a short on the second foil was identified. A dedicated tool is needed to isolate the shorted GEM sector and resolve the issue; afterwards, tensioning and validation will proceed.
  
  Field cage / Nylon66 structure: the field cage has been unmounted because the short Nylon66 bar positions interfere with the source calibration path. The new positions have been defined; Daniele now needs to update the original CAD, after which the pieces will be machined, cleaned, and remounted, hopefully within this week.
  
  Field cage foil: the test assembly was successful. Once the Nylon66 bars are retrofitted, the final installation can proceed.
  
  Copper box drawings: Cesidio is expected to provide feedback this week on the constructive drawings of the copper box.
- 09:04 → 09:05
  Giorgio report 1m
  
  Speaker: Giorgio Dho (Istituto Nazionale di Fisica Nucleare)
  Analysis
  
  Meeting with Australians postponed to this week
  
  Melba is working on finding NR on Run4 lowgain
  
  New student from Brasil is trying to move on from Giuseppe's work on track finding from images
  
  More quantitative measurement of saturation of V-bonded GEMs and improvement from previous GEMs
  
  LNF
  
  PMT testing is over
  
  20 characterized PMTs and working 6 were old and broken by helium
- 09:05 → 09:06
  Stefano report 1m
  
  Speaker: Stefano Piacentini (GSSI and INFN LNGS)
  Trigger Module:
  
  integration of the MIDAS frontend: done and tested
  
  ⁠⁠integration of the software update as a consequence of the trigger update: done and testes
  
  Channel 0 is not properly being processed: Herman believes it's a firmware related issue and he's working on that
  
  AND and OR logic: not working as expected, Herman is working on that
  
  TRG EXT function: the output signal shows very annoying bounces that must be solved as TRG EXT is a feature we are probably going to use a lot
- 09:06 → 09:07
  Giulia report 1m
  
  Speaker: Giulia D'Imperio (Istituto Nazionale di Fisica Nucleare)
  Improved LIME simulation: New source window provided by DavideP. I'm trying to run a simulation to see the effect
  
  I am asking for feedback about Emanuele's work on the data corrections
  
  I talked with Fabrizio and explained to him how to sum the CYGNO04 simulation, he will try to run some of them and I will try to analyse them
- 09:07 → 09:08
  
  Fabrizio report 1m
  
  Speaker: Fabrizio Petrucci (Istituto Nazionale di Fisica Nucleare)
- 09:08 → 09:09
  
  Andrea report 1m
  
  Speaker: Andrea Messina (Istituto Nazionale di Fisica Nucleare)

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