An Improved Hibachi Support Structure for Electron-Beam Diode Foils
Abstract
Large KrF amplifiers use electron beams to excite the laser gas. By necessity, the diode and laser cavity must be isolated by a mechanical barrier; an electron beam diode operates in vacuum, while the laser cavity may be filled with amagats of gas. Isolation is typically accomplished by a metal foil of low mass density which is mechanically supported by a structure having multiple open slots separated by ribs to permit passage of the electron beam. The support structure is referred to as a hibachi by reason of similarity. Engineering design of a hibachi must take into consideration a number of issues. The foil material must have sufficient tensile strength to support the static and dynamic pressure load over each hibachi slot. The pressure load experienced by the entire foil is supported by the whole hibachi. Foil temperature rise (dependent on electron beam energy, current density, and foil properties) must not be excessive to the point where material strength is compromised.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1989
- Accession Number
- ADA638310
Entities
People
- Bernard Weinstein
- Evan Rose
- Michael Kang
Organizations
- Los Alamos National Laboratory