• B.Salvachua - Changes on the LHC BLM system during YETS
  • New BLM installations during EYETS 24-25
    • TWOCRYST, two new BLMs, one downstream splitting crystal (TCCS) and another one downstream precesion crystal (TCCP)
      
      • Not interlocked
      • Channel for TCCP crystal reused from BLM at TCSM empty slot
      • Installation and motivation for experiment in ECR...
    • BGC, installation of two BLMs to investigate possibility to use it for beam halo monitoring
      • Not interlocked
      • Installation and motivation in ECR...
    • RF cavities, relocation of three BLMs and installation of two additional ones around the cryo-module 1 - Beam 2
      • Were not interlocked and will not be now 
      • ECR under preparation
      • Cables now routed on the protection to shield from noise
    • TDIS 4L2, one BLM that had to be displaced by 66 cm
      • Modification of expert name to reflect the modification of dcum
      • No modification of thresholds
    • MKIA MKIB in IP8, removal and reinstallation of 4 BLMs in the same locations
      • No changes
    • LESS solenoid installation, removal and reinstallation of 2 BLMs in the same locations
      • No changes
    • Question from Cedric about timeline for LIC detectors
      • Belen says that Sevgi is performing LIC and IC simulations to verify conversion factors and signals 
      • Action: Check if some of the LIC detectors are already interlocked in injection areas, and what is the thresholds
    • Question from Daniele about dBLMs in IP3
      • Belen says that they have been installed, details about high and low gain channels will come
      • Logging already in place
      • The card was taken from SPS and cables from collimators
    • Question from Daniele about interlock on TWOCRYST BLMs
      • Concerned that if they are not interlocked, if there are problems with the reversal after MDs, it will not be noticed easily
      • Possibility to interlock BLMs and put thresholds to the maximum for situations like these
        • Decision -> This will be the case for the TWOCRYST BLMs

• S.Morales - LHC BLM system readiness for 2025 first beam
  • Redundant 100Hz logging -> logged now by BLM per crate, also from Collimation
    • Build crontask to verify logging
  • Beam expected in 14 April
  • Latency tests: Check the note LHC-BLM-NOT-0008 with Daniele.
    • Latency in the ARC not tested
  • Cedric: Checklist in MPP
  • Cedric: in Friday there will be an update on the checklist

Next meeting 8th April - in the control room.