Laser wire beam profile monitor in the spallation neutron source (SNS) superconducting linac

Liu, Yun; Aleksandrov, A.; Assadi, S.; Blokland, W.; Deibele, C.; Grice, Warren P.; Long, Cary D.; Pelaia, T.; Webster, A.

doi:10.1016/j.nima.2009.10.061

Cited by 23 publications

(16 citation statements)

References 7 publications

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“…Detailed descriptions of the SNS laser wire system have been given in our previous papers [8,9]. Here we focus on the major modifications and improvements which allow the simultaneous profile scans using a single light source.…”

Section: Methodsmentioning

confidence: 99%

“…The scanning translation stages have a travel range of 46 mm with a m order resolution. Normally a scan step of 0.25 mm results in a sufficient resolution of profiles [8].…”

Section: At Eachmentioning

confidence: 99%

“…The photodetached electrons are deflected in the vertical direction by a C-shape dipole magnet [8] (collecting magnet) installed right after the interaction point. The electrons are then detected by a Faraday cup installed next to the collection magnet.…”

Section: A Signal Detection and Processingmentioning

confidence: 99%

“…Nonintrusive beam profile and emittance measurements have attracted increasing attention since they have little risk of causing equipment damage and can be conducted under operational particle beam conditions (i.e., particle beams with high beam current, long pulse duration, and/or high repetition rates) [1][2][3][4][5][6][7][8][9]. In recent years, laser based nonintrusive hydrogen ion (H À ) beam profile/emittance measurement systems have been commissioned at the Spallation Neutron Source (SNS) which is the accelerator based, world's most intense short-pulse neutron scattering facility [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…In recent years, laser based nonintrusive hydrogen ion (H À ) beam profile/emittance measurement systems have been commissioned at the Spallation Neutron Source (SNS) which is the accelerator based, world's most intense short-pulse neutron scattering facility [8,9]. Measurements of the neutron production H À beam profile and emittance using laser wires have been presented in previous papers.…”

Section: Introductionmentioning

confidence: 99%

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Simultaneous ion beam profile scan using a single laser source

Liu

Long

Huang

et al. 2013

Phys. Rev. ST Accel. Beams

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We report on the world's first experiment of a simultaneous profile scan of the hydrogen ion (H À ) beam using a laser wire system. The system was developed and brought to operational level of application at the superconducting linac of the Spallation Neutron Source accelerator complex. The laser wire profile scanner is based on a photodetachment process and therefore can be conducted on a 1-MW neutron production H À beam in a nonintrusive manner. The new simultaneous profile scanning system allows one to simultaneously measure profiles of the H À beam at nine different locations of the linac with high speed and accuracy, and therefore provides a unique tool for accelerator tuning and physics study. This paper describes the design, optical system and software platform developments, and measurement results of the simultaneous profile scanning system.

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Section: Methodsmentioning

confidence: 99%

“…The scanning translation stages have a travel range of 46 mm with a m order resolution. Normally a scan step of 0.25 mm results in a sufficient resolution of profiles [8].…”

Section: At Eachmentioning

confidence: 99%

Section: A Signal Detection and Processingmentioning

confidence: 99%