Rf Linac Pumped Lasers

摘要

Excitation of gas lasers by a small emittance beam of electrons from a rf linear accelerator has been proposed. An experiment to test this concept is in progress at the Los Alamos Scientific Laboratory (LASL). A 4-MeV side-coupled, standing-wave linear accelerator is being used to provide a pulsed electron current of 2 A with a 1- mu s duration. The electron beam, focused to a 5-mm-diam spot, is confined in the high-pressure gas (less than or equal to 10 atm) by a superconducting solenoid with a central magnetic field of 3 T (30 kG). Experimental studies include: fluorescence of various rare-gas halide mixtures as a function of pressure; transport of the electron beam through the gas; and the optimum configuration of the electron beam, magnetic field and the laser cavity. (ERA citation 05:001642)