sPHENIX is a new detector at RHIC.

["Soltz, Ron" <soltz1 AT llnl.gov>]

Gunther and Dave,

The document reads well, and presents the descoping exercise in a clear and 
thoughtful way.  As other’s have also emphasized, I worry that the treatment 
of the particle flow algorithms (lines 89-93 and 166-168) errs on the side of 
being too optimistic, leaving the impression that the current instrumented, 
stainless steel iHCAL may have been over-designed, which is surely not our 
intent.

For lines 89-93 I’d support Jamie’s suggested wording, or the following,

Further studies indicate that the impacts of the iHCAL modifications on the 
sPHENIX physics program may be mitigated through an optimal combination of 
calorimeter and track based information, following .e.g., the particle flow 
algorithm used in CMS and ILC jet reconstruction.

-Ron


> On Oct 20, 2017, at 9:02 PM, Gunther M Roland <rolandg AT mit.edu> wrote:
> 
> 
> Friends,
> 
> As discussed at the General Meeting today, we are forwarding draft 1 of our 
> document outlining the detector scope for a $32M cost cap. The pdf file can 
> be found at 
> https://www.dropbox.com/s/5wyutbndogozm5q/sPH-GEN-2017-002_v1.pdf?dl=0
> (we'll provide another link tomorrow for those that can't access dropbox)
> 
> Please send your comments in reply to this mail, keeping the 
> [sPH-GEN-2017-002] tag in the subject line***. Comments received by 
> close-of-business on Monday, 10/23, will be most useful. 
> 
> Cheers,
> 
> Gunther and Dave
> 
> ***we will move future reviews to an sphenix-notes-l AT bnl.gov list, but the 
> list couldn't be generated in time for this note.
> _______________________________________________
> sPHENIX-l mailing list
> sPHENIX-l AT lists.bnl.gov
> https://lists.bnl.gov/mailman/listinfo/sphenix-l