Speaker
Dr
Aihong Tang
(Brookhaven National Laboratory)
Description
In order to utilize the high luminosity provided by RHIC and the
enhanced data acquisition capability of STAR, a High Level online
tracking Trigger (HLT) is being developed to effectively study the
properties of the QGP created at RHIC. Based on the fast tracking and
event assembling, the STAR HLT can select events of great physics
interest online, which will reduce the rate to tape as well as the
time of offline processing. In year 2010, the HLT has successfully
selected events for J/psi elliptic flow study and anti-alpha search.
It has also been used to monitor the fraction of clean collisions over
background collisions during RHIC's Beam Energy Scan program. We
will present the architecture, methods and performance of the
STAR HLT. Future developments on accelerating the online
reconstruction of exotic decay topologies by Graphic Processing Unit
will also be presented.
Author
Dr
Aihong Tang
(Brookhaven National Laboratory)
