A Non-destructive Profile Monitor Using a Gas Sheet

A Non-destructive Profile Monitor Using a Gas Sheet
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使用气体表的无损剖面监测仪

DOI：
10.18429/jacow-ipac2016-weobb03
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
T. Shima
T. Shima
中科院分区：
--
文献类型：
--
作者：
N. Ogiwara;M. Fukuda;K. Hatanaka;Y. Hikichi;J. Kamiya;M. Kinsho;Y. Namekawa;T. Shima

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为了实现J-PARC 3GeV快速循环同步加速器(RCS)的非破坏性和快速响应的束流剖面监测，我们正在研制一种致密的气膜靶。这一次，为了验证气体薄片在测量加速光束二维轮廓中的作用，进行了以下实验：1)由深缝和薄缝组合而成的厚度为1.5 mm、密度为2×10Pa的气体薄片。这里，气体薄片是通过深缝产生的，而薄缝则改善了薄板的形状。2)对于直径大于0.35 mm的30keV电子束，用气体片测量了电子束的位置和二维分布。3)对束流为1A的392 MeV质子束的束流位置进行了较好的测量。
We are developing a dense gas-sheet target to realize a non-destructive and fast-response beam profile monitor for 3 GeV rapid cycling synchrotron (RCS) in the J-PARC. This time, to demonstrate the function of the gas sheet for measuring the 2 dimensional profiles of the accelerated beams, the following experiments were carried out: 1) The gas sheet with a thickness of 1.5 mm and the density of 2×10 Pa was generated by the combination of the deep slit and the thin slit. Here, the gas sheet was produced by the deep slit, and the shape of the sheet was improved by the thin slit. 2) 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 using the gas sheet. 3) Then the beam position of the 392 MeV proton beam with a current of 1 A was well measured, too.