IMPROVEMENT OF THE PERFORMANCE OF TOHOKU MICROBEAM SYSTEM
IMPROVEMENT OF THE PERFORMANCE OF TOHOKU MICROBEAM SYSTEM
复制标题
东北微束系统性能的改进
DOI：
10.1142/s0129083510001914
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
H. Yamazaki
中科院分区：
文献类型：
--
作者：
S. Matsuyama;K. Ishii;S. Tsuboi;Y. Hashimoto;Y. Kawamura;K. Yamanaka;M. Watanabe;S. Ohkura;M. Fujikawa;G. Catella;K. Fujiki;Y. Hatori;N. Hamada;M. Fujiwara;Y. Kikuchi;H. Yamazaki
微束系统安装在日本东北大学Dynamitron实验室，适用于同时进行空气/真空中的pxie、RBS、SE和STIM分析以及3D微ct。光源的光束亮度不足和微光束线的场污染限制了空间分辨率。为了提高东北微束系统的性能，对离子源和微束系统进行了优化改造。通过对系统的改进，在0.2 mrad的半散度下，系统的光束亮度提高到1.0 pA·µm-2·mrad-2·MeV-1。考虑到亮度和放大倍率，当光束光斑尺寸分别为1.0 × 1.0和2.0 × 2.0µm2时，可获得的目标电流分别为200和900 pA。修改后的源可以同时满足寿命和性能要求。通过更换波束扫描腔和部分波束导管，使系统的寄生场污染降低到0.5%以下。分辨率和波束电流都足以满足我们在空气/真空中进行pxie、RBS、SE和STIM分析以及3D pxie -µ- ct的应用。
A microbeam system was installed at Dynamitron laboratory at Tohoku University and is applicable to simultaneous in-air/in-vacuum PIXE, RBS, SE, and STIM analyses, and 3D µ-CT. Insufficient beam brightness of the source and field contamination of the microbeam line restricted spatial resolution. In order to improve the performance of Tohoku microbeam system, optimization and modification of the ion source and microbeam system were performed. By the modification of the system, the beam brightness of the system was increased to 1.0 pA·µm-2·mrad-2·MeV-1 at the half divergence of 0.2 mrad. Considering the brightness and the magnification, obtainable target current will be 200 and 900 pA for beam spot sizes of 1.0 × 1.0 and 2.0 × 2.0 µm2, respectively. The modification of the source meets both the lifetime and the performance. The parasitic field contamination of the system was reduced down to less than 0.5 % by replacing the beam scanner chamber and a part of beam duct. Both resolution and beam currents are sufficient for our applications of in-air/in-vacuum PIXE, RBS, SE, and STIM analyses and 3D PIXE-µ-CT.
DOI：
10.1016/j.nimb.2006.03.127
发表时间：
2006-08
影响因子：
1.3
作者：
K. Ishii;S. Matsuyama;H. Yamazaki;Yutaka Watanabe;Y. Kawamura;T. Yamaguchi;G. Momose;Y. Kikuchi;A. Terakawa;W. Galster
通讯作者：
K. Ishii;S. Matsuyama;H. Yamazaki;Yutaka Watanabe;Y. Kawamura;T. Yamaguchi;G. Momose;Y. Kikuchi;A. Terakawa;W. Galster
使用质子微束开发高分辨率 X 射线成像系统
DOI：
--
发表时间：
2008
期刊：
Proc. the 20th Workshop on Tandem Accelerators and Related Technologies JAEA-Conf 2008-005
影响因子：
--
作者：
Jun;Hasegawa;Shigeki;Shiba;Hitoshi;Fukuda;Yoshiyuki;Oguri
通讯作者：
Oguri
粒子诱导 X 射线发射 (PIXE) 的医学应用
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Harada;S.;Ehara;S.;Ishii;K.;Sera;K. et.al.
通讯作者：
K. et.al.