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Requirement:
The SVT should not degrade the performance of other STAR detectors. The SVT should enhance the performance of the TPC in the region of overlap.
Justification:
The TPC is the baseline detector and the SVT should not affect its performance in the stand-alone mode of operation. However, when the SVT is operated together with the TPC, for the region where tracking and particle identification can be done in both detectors, the global TPC-SVT performance will be much improved (tracking, efficiency, momentum determination, and particle identification).
Status:
The present SVT design leads to a global TPC--SVT performance that is much better than that expected for the TPC alone.