Far-Forward Engineering Meeting

→ US/Eastern
Description

https://bnl.zoomgov.com/j/1658386942?pwd=jfdBW1OFxwIy2RZtW5c7jcQLg87afY.1

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Meeting topics:

*Roman pots design discussion
    --Impedance calculations (updates, if any)
    --vacuum system design
    --Discussion about integration of readout boards + staves
*Geometry updates
*AOB

 

 
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Main priorities

  • Cooling, mechanical design changes due to first round of impedance results

 

Wakefields

  • From Gang (BNL): Detector packages need to be surrounded by an insulator, not a conductor.
  • Consensus from group is to have Gang change the material from copper to stainless steel, keeping everything else the same, and see how it affects the wakefields.
  • There was a discussion on using aluminum for (and to help with wakefields) cooling --> IJCLab simulations were done with both Al and Cu both, Al performed way worse for cooling the detector.

 

Inclusion of RDO board in the vacuum

  • Issue with RDO is either to have it outside the vacuum or inside. Outside creates two primary problems: 1) many feedthroughs which penetrate the scattering chamber wall, 2) constant flexing and movement on the ribbon cables and connectors.
    • Goal is to see if it is easier to solve the RDO-in-vacuum issue(s) easier than the issues mentioned above.
    • Need a flavor of the RDO with max number of inputs to LPGBT, and inputs potentially positioned on an edge (would need a modified RDO board).
    • Vacuum compatibility.

 

Goals for next meeting (Oct. 27th)

  • Follow-up on cooling with IJCLab -- any results from test setup to validate Peltier performance against what was simulated.
  • Follow-up on results from Gang's studies of impedance. --> we need some "specs" from these studies to know what we need to design to.
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