Characteristics of plasma window with various channel diameters for accelerator applications
-
- N. Ikoma
- Nishina Center for Accelerator-Based Science, RIKEN 1 , Saitama 351-0198, Japan
-
- Y. Miyake
- Nishina Center for Accelerator-Based Science, RIKEN 1 , Saitama 351-0198, Japan
-
- M. Takahashi
- Nishina Center for Accelerator-Based Science, RIKEN 1 , Saitama 351-0198, Japan
-
- H. Okuno
- Nishina Center for Accelerator-Based Science, RIKEN 1 , Saitama 351-0198, Japan
-
- S. Namba
- Graduate School of Engineering, Hiroshima University 2 , Hiroshima 739-8527, Japan
-
- K. Takahashi
- Graduate School of Engineering, Nagaoka University of Technology 3 , Niigata 940-2188, Japan
-
- T. Sasaki
- Graduate School of Engineering, Nagaoka University of Technology 3 , Niigata 940-2188, Japan
-
- T. Kikuchi
- Graduate School of Engineering, Nagaoka University of Technology 3 , Niigata 940-2188, Japan
この論文をさがす
説明
<jats:p>Plasma window is a feasible device as an atmosphere–vacuum interface, which can withstand energetic particle beams. It is, however, essential to enlarge the diameter to several tens of millimeters for actual beam passing in the accelerator applications. The pressure separation performance and discharge voltage V current I characteristics should be investigated in detail to design the plasma window for each purpose. Therefore, a cascade arc discharge device with a diameter of up to 20 mm was developed, and its characteristics as a function of diameter were examined. As a result, with an increase in the channel diameter, the discharge pressure that was achieved decreased, whose values were smaller compared with the values by the prediction formula, assuming the viscous gas flow with a constant plasma temperature. It showed that the bulk plasma temperature for the larger discharge channel was low because of the low-current density over the channel. Furthermore, the transition of the V−I slope was observed with an increase in the diameter.</jats:p>
収録刊行物
-
- Review of Scientific Instruments
-
Review of Scientific Instruments 91 (5), 2020-05-01
AIP Publishing
