First results from the GlueX experiment

© 2016 Author(s). The GlueX experiment at Jefferson Lab ran with its first commissioning beam in late 2014 and the spring of 2015. Data were collected on both plastic and liquid hydrogen targets, and much of the detector has been commissioned. All of the detector systems are now performing at or near design specifications and events are being fully reconstructed, including exclusive production of π0, η and ω mesons. Linearly-polarized photons were successfully produced through coherent bremsstrahlung and polarization transfer to the ρ has been observed.U.S. Department of Energy (Grants DE-FG02-87ER40315, DE-FG02-92ER40735, DE-FG02-94ER40818, DE-SC0010497, DE-FG02-87ER40344 and DE-FG02- 05ER41374)National Science Foundation (Grants PHY-1207857, PHY-1508238, PHY-1306418, PHY-1206043, PHY-1506303, PHY-1507208, and PHY-1306737)U.S. Department of Energy Office of Nuclear Physics (Contract DE-AC05-06OR23177