We present a fiber optic laser pulse transmission line for nonintrusive longitudinal profile measurement of the hydrogen ion () beam at the front-end of the Spallation Neutron Source accelerator. The 80.5 MHz, 2.5 ps, multikilowatt optical pulses are delivered to the accelerator beam line through a large-mode-area polarization-maintaining optical fiber to ensure high measurement stability. The transmission efficiency, output laser beam quality, pulse jitter, and pulse width broadening over a 30 m long fiber line are experimentally investigated. A successful measurement of the beam microbunch () profile is obtained. The experiment is the first demonstration to our knowledge of particle beam profile diagnostics using a fiber optic laser pulse transmission line.
© 2013 Optical Society of AmericaFull Article | PDF Article
Sachin Joshi, Azer P. Yalin, and Almantas Galvanauskas
Appl. Opt. 46(19) 4057-4064 (2007)
Yun Liu, Cary Long, Charles Peters, and Alexander Aleksandrov
Appl. Opt. 49(35) 6816-6823 (2010)
Xiang Peng, Michael Mielke, and Timothy Booth
Opt. Express 19(2) 923-932 (2011)