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AdV-DAQ (Data Acquisition and Global Control)
masserot - 10:17 Monday 15 September 2025 (67706) Print this report
SQZ: DAQ_DEMOD_SQZ_PLL demodulation board issue

Since the 2025-09-12-10h50m34-UTC, there are some issues related to the data provided by the DAQ_DEMOD_SQZ_PLL demodulation board:

  • SQZ_Fb server reports :
    • 2025-09-12-10h50m34-UTC>INFO...-[TfbSourceManager::Clean] source DAQ_DEMOD_SQZ_PLL_1 (1635:v05) has stopped -> waiting for data...
      2025-09-12-10h50m34-UTC>INFO...-[TfbSourceManager::Clean] source DAQ_DEMOD_SQZ_PLLSample3 (1636:v03) has stopped -> waiting for data...
      2025-09-12-10h50m34-UTC>INFO...-[TfbSourceManager::Clean] source DAQ_DEMOD_SQZ_PLLSample2 (1687:v02) has stopped -> waiting for data...
      2025-09-12-10h50m34-UTC>INFO...-[TfbSourceManager::Clean] source DAQ_DEMOD_SQZ_PLLSample0 (1688:v05) has stopped -> waiting for data...
      2025-09-12-10h50m34-UTC>INFO...-[TfbSourceManager::Clean] source DAQ_DEMOD_SQZ_PLLSample1 (1689:v06) has stopped -> waiting for data...
      2025-09-12-10h50m34-UTC>INFO...-[TfbSourceManager::Reporting] Sources reporting: / nSrc: 37, missing(5): DAQ_DEMOD_SQZ_PLL_1, DAQ_DEMOD_SQZ_PLLSample3, DAQ_DEMOD_SQZ_PLLSample2, DAQ_DEMOD_SQZ_PLLSample0, DAQ_DEMOD_SQZ_PLLSample1
      2025-09-12-10h50m34-UTC>INFO...-CfgReachState> Active(Active) Ok
  • SQZ_Tpro server reports:
    • 2025-09-12-10h50m35-UTC>WARNING-Missing packets [DAQ_DEMOD_SQZ_PLL_1]
      2025-09-12-10h50m35-UTC>INFO...-CfgReachState> Active(Active) Ok
      2025-09-12-11h46m16-UTC>INFO...-CfgReachState> Golden(Golden) Ok
      2025-09-12-11h46m17-UTC>WARNING-Missing packets [DAQ_DEMOD_SQZ_PLL_1]
      2025-09-12-11h46m17-UTC>INFO...-CfgReachState> Active(Active) OK

This morning several trials were made to reconfigure the faulty demodulation board without success.

As a result, the phases referenced in the DAQ and related to the SQZ clocks are not correctly extracted, consequently signals demodulated from the SQZ clocks are not correctly constructed

More investigations will be done during the next maintenance

 

Comments to this report:
letendre, masserot - 11:26 Tuesday 16 September 2025 (67715) Print this report

We made several trials from remote to recover the faulty SN28 demodulation board but without success .

The SN28 demodulation board located in the DBOX_SN58-slot3 need to be replaced by a spare one .  

The last plot shows the trend of

  • some temperature sensors related to the DBOX_SN28 and others located closely 
  • the DAQ 100MHz clock and SQZ PLL 8MHz magnetude and phase or frequency channels
  • the red line referred to starting time of the issue .
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