A NON-DESTRUCTIVE 2 D PROFILE MONITOR USING A GAS SHEET
A NON-DESTRUCTIVE 2 D PROFILE MONITOR USING A GAS SHEET
复制标题
使用气体层的非破坏性二维轮廓监测器
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
M. Fukuda
中科院分区：
文献类型：
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作者：
N. Ogiwara;J. Kamiya;Y. Hikichi;Y. Namekawa;M. Kinsho;Y. Hori;K. Hatanaka;T. Shima;K. Takahisa;M. Fukuda
我们正在开发一种使用致密气体片目标的无损且快速响应的光束轮廓监测器。为了制作气体片，我们应用了真空科学技术中的束流效应。通过长矩形通道发射的分子被迫集中在一个平面上。深缝和补缝的结合很容易产生厚度~1 mm、密度为2×10-4 Pa的气体片。这里，气体薄片是由深狭缝产生的，并且薄片的形状通过补充狭缝来改善。通过以下实验证明了该监测仪的实用性： 1）对于直径大于0.35 mm的30 keV电子束，可以很好地测量位置和二维轮廓。 2）然后也很好地测量了电流为几微安的10和400 MeV质子束的轮廓。 3) 最近，测量了 J-PARC 直线加速器中 400 MeV H− 离子束的轮廓。
We are developing a non-destructive and fast-response beam profile monitor using a dense gas sheet target. To make a gas sheet, we apply the beaming effect in vacuum science and technology. The emitted molecules through a long rectangular channel are forced to concentrate on a plane. The gas sheet with a thickness of ~ 1 mm and the density of 2×10-4 Pa is easily generated by the combination of the deep slit and the supplementary slit. Here, the gas sheet is produced by the deep slit, and the shape of the sheet is improved by the supplementary slit. The usefulness of this monitor was shown by the following experiments: 1) For the electron beam of 30 keV with a diameter greater than 0.35 mm, the position and the two-dimensional profiles were well measured. 2) Then the profiles of the 10 and 400 MeV proton beam with a current of several microamperes were well measured, too. 3) Recently, the profiles of the 400 MeV H− ion beams in J-PARC linac were measured.