BEUV light generation via multi-bunch short electron pulse pre-irradiation

2015 Fiscal Year Final Research Report

• Project/Area Number: 25600143
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Quantum beam science
• Research Institution: Waseda University
• Principal Investigator: Washio Masakazu 早稲田大学, 理工学術院, 教授 (70158608)
• Co-Investigator(Renkei-kenkyūsha): SAKAUE Kazuyuki 早稲田大学, 高等研究所, 助教 (80546333) ; HIGASHIGUCHI Takeshi 宇都宮大学, 工学部, 准教授 (80336289)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 高性能加速器 / レーザー・電子複合照射 / EUV光 / BEUV光 / レーザープラズマ

Outline of Final Research Achievements

We have achieved the major subjects for obtaining the basic data aiming the highly efficient system of laser produced plasma (LPP). In this study, we have performed the high quality electron beam production system by using a photo-cathode rf-gun installed in Waseda University, and then we have developed the laser system with laser enhanced cavity in CO2 laser scheme. Through the development, we have obtained the data for LPP light under the pre-irradiation of multi-bunch electron beam in combination with the CO2 laser illumination. In the study, we have realized the stabilization of electron beam generation even in the multi-bunch scheme. Further, we have succeeded the construction of CO2 laser with the high finesses laser enhanced cavity. Finally, we have demonstrated the enhancement of LPP light up to 150% by using ten bunch electron beams in combination with 700mJ CO2 laser pulse with the duration of 400ns.

Free Research Field

量子ビーム科学