Non-destructive 2-D beam profile monitor using gas sheet in J-PARC LINAC

被引：5
|
作者：
Kamiya, J. [1 ]
Ogiwara, N. [1 ]
Miura, A. [1 ]
Kinsho, M. [1 ]
Hikichi, Y. [2 ]
机构：
[1] Japan Atom Energy Agcy, J PARC, Shirakata 2-4, Naka, Ibaraki, Japan
[2] Nippon Adv Technol Co Ltd, Muramatsu 3129-45, Naka, Ibaraki, Japan
来源：
9TH INTERNATIONAL PARTICLE ACCELERATOR CONFERENCE (IPAC18) | 2018年 / 1067卷
关键词：
D O I：
10.1088/1742-6596/1067/7/072006
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
A beam profile monitor using interaction between the beam and the gas molecules distributed in sheet shape has been developed. Ions or luminescence generated by passing the beam through the gas sheet has the information of cross-section shape of the beam. The gas sheet beam monitor will become a useful tool to measure the profile of high power beams because it has no breakable element such as wires. Furthermore, 2-D beam profile can be obtained at a certain position of beam line. We applied the gas-sheet based beam profile monitor to J-PARC LINAC, where the negative hydrogen atoms are accelerated to the energy of 400 MeV. The vacuum system was carefully designed not to make an unacceptable pressure rise in nearby cavities when the gas was injected. The clear image of the beam profile was successfully obtained by detecting the ionized N-2 gas.
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页数：6
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