Fiber optic picosecond laser pulse transmission line for hydrogen ion beam longitudinal profile measurement

Chunning Huang; Yun Liu; Alexander Aleksandrov

doi:10.1364/AO.52.004462

Fiber optic picosecond laser pulse transmission line for hydrogen ion beam longitudinal profile measurement

Chunning Huang, Yun Liu, Alexander Aleksandrov

Accelerator Science & Technology

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

We present a fiber optic laser pulse transmission line for nonintrusive longitudinal profile measurement of the hydrogen ion (H^-) 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 H^- beam microbunch (-130 ps) 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.

Original language	English
Pages (from-to)	4462-4467
Number of pages	6
Journal	Applied Optics
Volume	52
Issue number	19
DOIs	https://doi.org/10.1364/AO.52.004462
State	Published - Jul 1 2013

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abstract = "We present a fiber optic laser pulse transmission line for nonintrusive longitudinal profile measurement of the hydrogen ion (H-) 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 H- beam microbunch (-130 ps) 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.",

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AB - We present a fiber optic laser pulse transmission line for nonintrusive longitudinal profile measurement of the hydrogen ion (H-) 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 H- beam microbunch (-130 ps) 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.

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Fiber optic picosecond laser pulse transmission line for hydrogen ion beam longitudinal profile measurement

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