Date

Attendees

Overview

Text in the excerpt box will show up in lists of meetings.KB mirrors, alternate beam path, scope conversations, target and flagship requirements into Jama

Discussion items

TimeItemWhoNotes
Walk - in / out
  • KB mirrors. Asked Diling why XPP goes with transfocator, not KB pair. 
    • Per Diling: Much easier to change spot size based on XPP user requests
      • Based on Diling's experience, our flexibility to change focus on demand is reduced. 
      • Long effort for changing focus in current implementation.
      • This goes away from what David Fritz says. Diling has never seen this in practice. Diling not sold on the ease of changing focus with mirror bending. 
      • Worrisome that this is something that is possible in principle but worry about practice
    • Achromaticity is a sure benefit
    • KB implies a different path through the chamber than lenses. 
    • Experiments go als 
  • Also discussing beam path below grade and what control room we would use. 
    • MEC-U's current standpoint is the CDR plan or else using the space of TAO (ROD 16). Using the current MEC control room was a last resort concept. Note I link to the records of decision page here
    • Possibility of beam path going below CXI line (slightly offset by CXI)?

Technical updates
  • ELI Beamline photos from Eric, Dimitri and Meriame
  • Discussion of stalled MEC-U UAP meeting
  • Scope conversations
    • Kai is asking engineers to refer to a facility not supporting the upgrades in CDR 11.2 not as "FES Base" but rather "FES minus explicitly designed upgrades" ("FES -EDU")
    • Cavern space looks very constrained when considering beam delivery, dumping and access. 
    • Mikael has a request to consider what the impact would be of living in FES -EDU world.
  • Requirements transcription into Jama - needing help
    • Engineers are working from one incomplete slide deck to figure out requirements - slide deck had a configuration (inadvertently?) deleted back in September.
    • As a consequence, Brice was surprised to learn that we might want a dual target for some experiments (e.g. ion heating target)
    • Flagship descriptions into Jama. One presentation is here
  • Considering a different mirror to put MEC below floor at final FEH location. Discussed this morning
    • Very preliminary discussion

Action items

  • Luke B. Fletcher to make first pass of requirements for multi-target capability in ion heating, plus requirements of flagships 4a and 4b in Jama