High-intensity beam profile measurement using a gas sheet monitor by beam induced fluorescence detection

被引：6
|
作者：
Yamada, Ippei [1 ,3 ]
Wada, Motoi [1 ]
Moriya, Katsuhiro [2 ]
Kamiya, Junichiro [2 ]
Saha, Pranab Kumar [2 ]
Kinsho, Michikazu [2 ]
机构：
[1] Doshisha Univ, Grad Sch Sci & Engn, 1-3 Tatara Miyakodani, Kyotanabe, Kyoto 6100321, Japan
[2] Japan Atom Energy Agcy, J PARC Ctr, 2-4 Shirakata, Tokai, Ibaraki 3191195, Japan
[3] J PARC Ctr JAEA, Tokai, Ibaraki, Japan
来源：
PHYSICAL REVIEW ACCELERATORS AND BEAMS | 2021年 / 24卷 / 04期
关键词：
D O I：
10.1103/PhysRevAccelBeams.24.042801
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
A transverse beam profile monitor that visualizes a two-dimensional beam-induced fluorescent image was developed. The monitor employs a sheet-shaped gas flow formed by a technique of rarefied gas dynamics. A simplified analysis method was developed to reconstruct the beam intensity profile from the obtained image. The developed profile monitor and the analysis method were applied to measure the J-PARC 3 MeV H? beam profile. The root mean square values of the profiles were consistent with the ones obtained by a wire-scanning-type beam profile monitor. The beam loss due to the gas sheet injection was measured as a beam-current reduction. The amount of the beam current decreased in proportion to the gas sheet flux and the reduction ranged from 0.004 to 2.5%. The assembled system was capable of reconstructing a beam profile from a single shot beam pulse (1.7 ? 1013 protons in 50 ?s).
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页数：13
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