[FFA_CEBAF_Collab] JULO draft for 6/28

Jay Benesch benesch at jlab.org
Thu Jun 8 17:21:51 EDT 2023


Alex,

For this audience, layout is sufficient.  The users don't care about the 
details you want to include.

Jay

On 6/8/23 16:58, Alex Bogacz wrote:
> Dear Colleagues,
> 
> I worry about the second bullet on slide 11…
> 
> ‘ The emittance values previously provided are not valid and will not be 
> until there is a layout. Beam size will then be recalculated.’
> 
> 
> In fact, we have a layout. What is missing to complete the emittance 
> dilution budget  are the splitters. We already heave a preliminary 
> emittance budget for the FFA arcs and the new  Spr/Rec.
> 
> I would refine the statement as:
> 
> 
> ‘The emittance dilution budget previously provided include contributions 
> from the FFA arcs and the new  Spr/Rec, one still needs to include 
> emittance dilution coming from the horizontal splitters as they are 
> being designed. Beam size will then be recalculated.’
> 
> 
> Please, let me know if you agree…
> 
> Thanks.
> 
> 
> Cheers,
> 
> 
> Alex
> 



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