sPHENIX tracking discussion

[Christof Roland <christof.roland AT cern.ch>]

Hi Tony,

thanks a lot for the numbers. Great to see that the numbers dont depend on the track multiplicity. 

I will take these and plug them in the fast simulation tool to see how close we are to the 

ideal pT and impact parameter resolutions we can expect given the material budget and resolutions

of the detector.

Cheers

   Christof 

On 26.05.2017, at 18:53, Frawley, Anthony <afrawley AT fsu.edu> wrote:

Hi All,

Following up on Christof's request at the tracking meeting this morning, I extracted the cluster resolutions for clusters matched to tracks embedded in Hijing events. Here are the RMS numbers for reconstructed cluster position minus truth cluster position:

Clusters matched to Hijing embedded pion tracks:

r-phi resolution:    MAPS = 4.5 microns   INTT = 28.3 microns    TPC = 128 microns

Z resolution:          MAPS = 4.7 microns    INTT = 4745 microns   TPC = 151 microns

Clusters matched to standalone 100 pion event tracks:

r-phi resolution:    MAPS = 4.5 microns   INTT = 27.4 microns    TPC = 126 microns

Z resolution:          MAPS = 4.8 microns    INTT = 4800 microns   TPC = 159 microns

Note that it is important that these are clusters matched to tracks. That means that the tracker has already rejected clusters it does not like.

Bottom line: Not much change for clusters associated with Hijing embedded tracks.

Cheers

Tony

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