sPHENIX MAPS tracker discussion

[Ming Liu <ming AT bnl.gov>]

Hi Sookhyun,

 

Thanks for the nice work, I have a few detailed questions about your plots:

 

#1.  For the in-time events, I assume their collision  |Z_vtx| < 10cm, and the out-of-time events have sigma_z_vtx = 40cm, right?

 

#3, this is essentially the out-of-time vtx tagging efficiency, at a high  p+p collision rate ~10MHz, with ~10uS integration window of MVTX, we would expect about 100 collisions,  Does this mean you would like to have ~1 miss-identified crossing? Of course, if we can have much shorter integration time (say ~4uS), this miss-tagging rate would be smaller.

 

#5, at 12MHz, and ~4uS integration time, I would expect ~12 x 4 = 48 collisions on average, but your plot shows the average # of event vtx ~ 10, do you require hits in both MB/BBC detectors?

 

 

Cheers,

Ming

 

 

-- 

Ming Xiong Liu

P-25, MS H846                     TEL: 505-667-7125 

Physics Division                            631-344-7821(BNL)

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From: sPHENIX-MAPS-l <sphenix-maps-l-bounces AT lists.bnl.gov> on behalf of Sookhyun Lee <dr.sookhyun.lee AT gmail.com>
Date: Saturday, December 1, 2018 at 4:38 PM
To: sphenix-mvtx-l <sphenix-maps-l AT lists.bnl.gov>, <sphenix-intt-l AT lists.bnl.gov>
Subject: [Sphenix-maps-l] Final plots for in-time vertexing with INTT

 

Hi all, 

 

My sincere apologies for delayed posting for final plots for in-time vertexing with INTT. I had to modify codes to properly deal with hermetic INTT layers and the performance improved as a result.

 

Original plots are here if needed:

/gpfs/mnt/gpfs04/sphenix/user/shlee/ittf/plots/final

 

Best regards,

Sookhyun

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