sPHENIX discussion of software

[pinkenburg <pinkenburg AT bnl.gov>]

Hi folks,

here is the QM poster abstract for the fixed latency reconstruction. Let 
me know if you have objections/improvements/praise...

Thanks
Chris


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Christopher H. Pinkenburg       ;    pinkenburg AT bnl.gov
                                ;    http://www.phenix.bnl.gov/~pinkenbu

Brookhaven National Laboratory  ;    phone: (631) 344-5692
Physics Department Bldg 510 C   ;    fax:   (631) 344-3253
Upton, NY 11973-5000

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The sPHENIX Fixed Latency Reconstruction

The sPHENIX detector is the next generation experiment at the Relativistic 
Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. Starting 
commissioning in May it will collect high statistics data sets from ultra 
relativistic Au+Au, p+p and p+Au collisions in the next 3 years. The readout 
is a combination of triggered readout for calorimeters and streaming readout 
for the silicon pixel/strip detectors and the time projection chamber (TPC). 
sPHENIX does not employ high level triggers which would require building 
events in real-time so only a small subset is build online for monitoring 
purposes which makes it unique among NP/HEP experiments. Events are assembled 
from multiple input streams only during the multi pass offline reconstruction 
which includes calibration and space charge distortion corrections for the 
TPC data. This reconstruction will run near real-time within a fixed latency 
of when the data was taken. To meet its physics requirements sPHENIX has 
developed state of the art reconstruction software based on the "A Common 
Tracking Software" (ACTS) package which was adapted to reconstruct the TPC 
data. The raw data will be processed at the Tier 0 for the RHIC experiments - 
the Scientific Data Computing Center (SDCC) at BNL. The Production and 
Distributed Analysis (PanDA) system was chosen as workload management system 
to handle the complexities of our workflow.

This poster will show the details of the data processing for the sPHENIX 
experiment.