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Update for LEIR injection BPMs (electronics and software)

Europe/Zurich
CERN

CERN

Electronics (Michele):

  • Reminder of specifications following recent meeting with ABP
  • Good performance achieved with modified (not yet optimised) LN4 analogue front-end board and existing FESA server using SIS3301 module ADC clocked at 6.25MHz
  • Alternatives discussed:
    • 1) BI/RF ADC FMC on VXS carrier (not sure whether compatible with BI VFC) - SVEC an option?
    • 2) Commercial ADC/FMC ordered from creotech (Greg Kasprovich) ordered - pending delivery. Not clear what is provided in terms of firmware support (https://www.ohwr.org/projects/fmc-adc-250m-16b-4cha-sw)
    • 3) Stick with SIS3301 (possibly with higher sampling frequency)
  •  
    • All options require design and production of analogue front-end electronics
    • Options 1) and 2) both require firmware developments and changes to the FESA server. Jiri estimates that 2-3 weeks would be required
    • Option 3) (only) requires changes to the front-end FESA server

Software (Guillaume):

  • Succesful tests using 16k samples at 25 MHz read out within 200msec
  • Open questions about effort required to integrate new VFC driver (how many registers?)

Next steps:

  • Clarify support for creotech module and start (minimal) firmware development (Michele/Jiri)
  • Decide which of the 3 options is better in terms of performance and development effort + cost
  • Be able to demonstrate a working system based on the supported option(s) before LS2 starts
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