sPHENIX is a new detector at RHIC.

[Gunther M Roland <rolandg AT mit.edu>]

Hi Marzia,

Thanks! The sentence was referring to the future sPHENIX run periods - if we 
cut the acceptance by 25% that's like losing one of the runs we have planned, 
statistics-wise. We'll reconsider that sentence for the final draft.

Best,

Gunther


> On Oct 23, 2017, at 8:57 PM, Marzia Rosati <marziarosati AT gmail.com> wrote:
> 
> Gunther et al.,
> attached is a the upsilon efficiency vs pt for all 3 eta ranges to be used 
> as the right hand side plot in figure 1.4.
> 
> I am not sure what is meant by line 124-126. "While these losses are not 
> catastrophic, it is worth noting that within the sPHENIX run plan a 25% 
> loss is equal to the statistics collected in one of the RHIC run periods".
> 
> As far as I understand this statement is not correct. The acceptance in 
> PHENIX is about 18 times smaller than sPHENIX so we our stats are much 
> smaller. STAR has a similar acceptance to sPHENIX but readout much slower 
> and limited PiD so I don't think they ever collected upsilon samples in any 
> beam species (pp AuAu) which are 1/4 of the expected sPHENIX stats.
> 
> Best regards
> Marzia
> 
> On 10/23/17 5:54 PM, Gunther M Roland wrote:
>> A friendly reminder that comments on this important document are still 
>> being accepted! Thanks to everyone who shared their thoughts/corrections 
>> already. We will work on an updated draft tomorrow and then take it from 
>> there.
>> Best,
>> Gunther and Dave
>>> On Oct 21, 2017, at 12:02 AM, 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.
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>>> sPHENIX-l AT lists.bnl.gov
>>> https://lists.bnl.gov/mailman/listinfo/sphenix-l
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>> .
> <upsilon-sphenix-effpt.png>