The development of a hibachi window for electron beam transmission in a KrF laser

Author

Gentile, C.A. ; Parsells, R. ; Butler, J.E. ; Sethian, J.D. ; Ciebiera, L. ; Hegeler, F. ; Jun, C. ; Langish, S. ; Myers, M.

Author_Institution

Princeton Plasma Phys. Lab., NJ, USA

fYear

2003

fDate

14-17 Oct. 2003

Firstpage

175

Lastpage

180

Abstract

In support of Inertial Fusion Energy (IFE) a 150 μm thick silicon (Si) wafer coated on one side with a 1.2 μm nanocrystalline diamond foil is being fabricated as an electron beam transmission (hibachi) window for use in KrF lasers. The hibachi window separates the lasing medium from the electron beam source while allowing the electron beam to pass through. The hibachi window must be capable of withstanding the challenging environment presented in the Iasing chamber, which include: fluorine gas, delta pressure > 2 atm @ 5 Hz, and a high heat flux due to the transmission of electrons passing through the foil. Tests at NRL/Electra and at PPPL have shown that a device employing these novel components in the stated configuration provide for a robust hibachi window with structural integrity.

Keywords

diamond; excimer lasers; foils; krypton compounds; laser fusion; nanostructured materials; optical windows; silicon; 1.2 mum; 150 mum; 5 Hz; Inertial Fusion Energy; KrF; KrF laser; Si-C; delta pressure; electron beam source; electron beam transmission; fluorine gas; hibachi window; high heat flux; lasing medium; nanocrystalline diamond foil; silicon wafer; structural integrity; Crystalline materials; Electron beams; Gas lasers; Laboratories; Laser fusion; Laser theory; Optical materials; Physics; Silicon; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 2003. 20th IEEE/NPSS Symposium on

Print_ISBN

0-7803-7908-X

Type

conf

DOI

10.1109/FUSION.2003.1426616

Filename

1426616