TB: BST over WR implementation - WREN rear transition module specifications

Thursday 27 Jun 2024, 09:30 → 10:30 Europe/Zurich

866/2-D05 (CERN)

Tom presented to the TB the slides he was going to show the same day at a timing planning review in the afternoon.

The following points were highlited during the discussion:

• With the new distribution system the trigger delay will be the same in all the points/nodes, but not the same as today. The delay in itself is not known.
  • the time of flight could be compensated in each WREN, but the method is not clear yet
  • the difference between the current delay and the new one should be estimated as the turn clock 'phase-shift' during the ramp will depend on it <= action ??
    • if it is significant we will need to adjust this for the 70 BPM crates (or at least per point)
• The baseline for the TTC to WR migration is stll LS3 for both LHC and SPS
• For the systems requiring the use of a splitter like the SPS BPM, optical modules to be used to drive the splitter have been identified but need to be tested <= action Tom?
• The WREN TTC rear transition module (RTM) will not work in the BI catres
  • this might be an issue for the BLM system if the plan is to receive the BST directly in the VFC and use the P0 only for the daisy chain
• The first WREN prototype can not be used: the P0 connections have been swapped 
• It is to be clarified who will pay for the RTM <= action Thibaut??
• The current SW tools for the BST monitoring will need to be ported. 
  • BI SW should discuss with CEM/CSS to see which diagnostic tools they are going to provide <= action Steen
• The configuration of the BST need to be clarified
• Some concerns from the SW section as we will pass from 1 master to more than 100
  • maintenance and configuration should be considered
  • having a global view and diagnostic will increase in complexity
• It is not yet clear to BI if the new timing module will look to FESA like the old one
  • Tom said he hope so
• The current BST diagnostic tools will need to be re-written, but this was anyway the case as they are currently in JavaFX

09:30 → 09:50 TB: BST over WR implementation - WREN rear transition module specifications

Speaker: Tom Levens (CERN)

BSToWR_TB.pdf

BSToWR_TB.pptx

Timing Distribution over WR for experiments - 2nd workshop