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Weekly Meeting

→ Europe/Rome
Davide Fiorina (GSSI & INFN)
Description

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

Rolling Report

    • 09:00 → 09:01
      Previous week recap 1m
      Speaker: Davide Fiorina (GSSI & INFN)

      Previous week recap (by person) — week of this meeting

      Davide F.

      • O₂ and H₂O sensor procurement remained blocked: vendors promised required documents, but no feedback received yet.
      • Requested a quote for the new HV cable from an Italian supplier.
      • PRA update with NIER stalled; planned to re-ping due to no feedback.
      • Planned a 3-day Frascati trip starting tomorrow to mount the first GEM stack (if remaining issues are solved).
      • Awaited LNGS crane-team feedback (via Cesidio) to clarify the copper-box movement procedure.
      • Continued reviewing Antonio’s copper-box work-in-progress.
      • Trigger-module test bench slipped and was postponed to next week.
      • Performed Hall F routing inspection with technicians and LNGS services; follow-up organization pending.

      Giorgio

      • No major analysis update; minor digitization updates from Igor.
      • Met with Edward Shields and Federico to explore improvements for diffusion deconvolution.
      • GEM premounting looked acceptable even with bent bandelle; final confirmation pending full mounting.
      • Identified field-cage foil issue (missing securing holes) and scheduled triage for tomorrow.
      • Confirmed GEMs repaired and ready; transport back still pending with Luigi.
      • Continued replying to reviewer comments on the field-cage paper (with Alex).

      Stefano

      • Received no reply from both contacts regarding the Rb-83 source.
      • DAQ meeting held: discussed N₂ gas-tightness tests and operating overpressure (~3 ± 2 mbar).
      • New DAQ validated in a long MANGO data-taking run; performance OK so far.
    • 09:01 → 09:02
      DavideP report 1m
      Speaker: Davide Pinci (Istituto Nazionale di Fisica Nucleare)
      • Fantini company:
        • is asking for news about final designs;
        • a possible time slot to machine the copper is soon after Easter;
      • Bussetti  was informed about the successful gas tightness test;
      • 3 FanINFanOut confirmed at LNF
    • 09:02 → 09:03
      Elisabetta report 1m
      Speaker: Elisabetta Baracchini (Istituto Nazionale di Fisica Nucleare)
    • 09:03 → 09:04
      DavideF report 1m
      Speaker: Davide Fiorina (GSSI & INFN)

      Weekly Summary

      GEM stacks and assembly

      • The first GEM stack was successfully assembled at LNF, but an alignment issue was found between the inner and the external frames.
      • The agreed fix is to slot all external-frame holes by 2 mm per side on both GEM stacks.
      • Tecnoalarm will machine the modified parts, and Daniele will provide updated drawings by 23/03.

      GEMs and cathodes from CERN

      • GEM3 showed critical issues: the v-bond created some short-circuited protection resistors.
      • CERN confirmed that new GEMs for the second stack will be shipped soon.
      • CERN is also remaking the cathodes; the team is ready to contribute 400 CHF, provided all edges/tips are rounded for safe 50 kV operation.

      Copper box movement in Hall F

      • A Hall F inspection confirmed that the copper box can be transported already assembled into the experimental area.
      • The current plan uses a remote-controlled crane + mobile air cushion, with an estimated cost of about 5 k€.
      • DavideF must verify with SPP and LNGS Technical Coordination whether temporary removal of corridor wall sheets is allowed and what documentation is required.

      Copper drawings

      • A way was found to unblock the copper drawing workflow after the stall.

      Field cage, setup, and infrastructure

      • For the field cage, missing closure holes may be added using a dedicated punching tool designed by Daniele.
      • Work progressed on the pre-commissioning infrastructure, though some 30x30 Bosch aluminum profiles are still missing.

      Other follow-up items

      • A broader Hall F inspection with the full team should be organized later, though it is not urgent.
      • DavideF still has to check HV cable compatibility in Hall F and discuss a possible thin PMT window solution with Giorgio.
      • The team should also check whether the second GEM shipment can use an already planned CERN transport on 01/04.
    • 09:04 → 09:05
      Giorgio report 1m
      Speaker: Giorgio Dho (Istituto Nazionale di Fisica Nucleare)

      Analysis

      • Main news is from Luan who will optimize digitization for quest high gain and low gain and fusion and has implemented Atul's variables to test ER/NR discrimination.
      • Analysis meeting on Thursday (presentation from Luan expected)

       

      LNF

      • Per i PMT, come vogliamo testarli e validarli?
      • Chiedere a Luigi di scrivere per la modifica dei catodi (Farò appena dopo il meeting)

       

      Altro

      • Mi hanno chiesto di fare il talk su dark matter direzionale a CSN2 ad aprile.  Buona pubbicità
    • 09:05 → 09:06
      Stefano report 1m
      Speaker: Stefano Piacentini (GSSI and INFN LNGS)
    • 09:06 → 09:07
      Giulia report 1m
      Speaker: Giulia D'Imperio (Istituto Nazionale di Fisica Nucleare)
      • dedicated simulations of the 8 keV xrays from GEM copper available on the cloud. Emanuele/DavideP will digi-reconstruct and analyze them.
      • Emanuele is investigating the possibility to use the cnaf queues from a dedicated cnaf account (instead of using the notebook)
    • 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)