Accession Number : ADP005087

Title :   Optimization of the Parameters of a Storage Ring for a High Power XUV Free Electron Laser,

Corporate Author : CALIFORNIA UNIV BERKELEY LAWRENCE BERKELEY LAB

Personal Author(s) : Jackson,A. ; Bisognano,J. ; Chattopadhyay,S. ; Cornacchia,M. ; Garren,A.

Report Date : OCT 1985

Pagination or Media Count : 12

Abstract : This paper we describes the operation of an XUV high gain FEL operating with a bypass of an electron storage ring, and discuss the implications on storage ring optimization imposed by FEL requirements. It transpires that, in the parameter regime of interest, collective effects within the beam play an important role. For example, intrabeam scattering dilutes the transverse emittance of the beam and the microwave instability increases the momentum spread. Both phenomena reduce the effectiveness of the FEL. A computer code, ZAP, has been written which, for a given lattice design, takes all such effects into consideration and produces a figure of merit for FEL operation for that machine. We show the results of ZAP for several storage ring designs, all optimized for FEL operation, and present a design example of a facility capable of producing coherent radiation at 400 a with lens of megawatts of peak power.

Descriptors :   *PARTICLE ACCELERATOR COMPONENTS, *FREE ELECTRON LASERS, ULTRAVIOLET RADIATION, HIGH POWER, PEAK POWER, ELECTRON BEAMS, ENERGY TRANSFER, HIGH GAIN, POWER GAIN, PULSE RATE, REPETITION RATE, COMPUTER PROGRAMMING, OPTIMIZATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE