J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 637-639
Foil cooling for rep-rated electron beam pumped KrF lasersJ.L. Giuliani1, F. Hegeler2, J.D. Sethian1, M.F. Wolford3, M.C. Myers1, S. Abdel-Khalik4, D. Sadowski4, K. Schoonover4 and V. Novak4
1 Naval Research Laboratory, Plasma Physics Division, 4555 Overlook Ave., Washington, DC 20375, USA
2 Commonwealth Technology, Inc., 5875 Barclay Dr., Alexandria, VA 22315, USA
3 Science Application International, Corp, 1710 SAIC Drive, McLean, VA 22102, USA
4 Georgia Institute of Technology, School of Mechanical Engineering, Atlanta, GA 30332, USA
In rep-rated electron beam pumped lasers the foil separating the vacuum diode from the laser gas is subject to repeated heating due to partial beam stopping. Three cooling methods are examined for the Electra KrF laser at the Naval Research Laboratory (NRL). Foil temperature measurements for convective cooling by the recirculating laser gas and by spray mist cooling are reported, along with estimates for thermal conductive foil cooling to the hibachi ribs. Issues on the application of each of these approaches to laser drivers in a fusion power plant are noted.
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