Speaker
Description
The E1039/SpinQuest experiment at Fermilab will measure the transverse single spin asymmetry (TSSA) in several processes such as $J/\psi$ production and Drell-Yan di-muon pair production, exploiting the 120 GeV unpolarized proton beam from the Fermilab Main Injector on transversely polarized ammonia and deuterated ammonia targets.
Such measurements are anticipated to provide knowledge on the Sivers function from the proton sea quarks and gluons.
The importance of the Sivers function studies is based on their ability to probe the orbital angular momenta of quarks and gluons, which may contribute significantly to the nucleon spin and thus help resolve the so-called ``proton spin puzzle''.
In pursuit of these asymmetry measurements, we have been developing and optimizing an online reconstruction algorithm exploiting the high throughput and mass parallelization capabilities of graphics processing units (GPU), which combined with adequate visualization tools will provide real-time data monitoring for the SpinQuest experiment.
This talk will highlight the SpinQuest experiment and the spectrometer efficiency induced projected systematic uncertainties for the $J/\psi$ TSSA from its first production data.
The performance metrics of the GPU-based online reconstruction algorithm will also be discussed, along with the features and methods employed to reach successful real-time data visualization.
This work is supported in part by the U.S. DOE award # DE-FG02-07ER41528
