Title :
Fluid and thermal modeling for a liquid-cooled high-fluence electron-beam transmission window
Author_Institution :
SRI Int., Menlo Park, CA, USA
Abstract :
Summary form only given, as follows. Energy loss from high-energy electrons that pass through a transmission window causes an increase in window temperature. A technique to cool transmission windows that utilizes water under high pressure flowing in capillary ducts is presented. A model for fluid flow in ducts quantifies fluid pressure, water temperature, convective rate, and vapor pressure as a function of distance into a capillary duct subject to uniform heating. The results quantify a design to prevent vapor formation in a capillary duct and provide a limit a 5-cm-diameter window that would support 30 mA/cm/sup 2/ continuously at a beam energy or 500 keV.
Keywords :
beam handling equipment; beam handling techniques; electron beams; 500 keV; capillary duct; capillary ducts; convective rate; energy loss; fluid modeling; fluid pressure; high pressure flow; high-energy electrons; liquid-cooled high-fluence electron-beam transmission window; thermal modeling; uniform heating; vapor formation; vapor pressure; water temperature; window temperature; Conductors; Contracts; Ducts; Electron tubes; Optical reflection; Plasma measurements; Plasma simulation; Plasma temperature; Receiving antennas; Testing;
Conference_Titel :
Plasma Science, 1998. 25th Anniversary. IEEE Conference Record - Abstracts. 1998 IEEE International on
Conference_Location :
Raleigh, NC, USA
Print_ISBN :
0-7803-4792-7
DOI :
10.1109/PLASMA.1998.677859
