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OpticsCommunications90 (1992) 82-84 OPTICS North-Holland COMMUNICATIONS
 

Summary: OpticsCommunications90 (1992) 82-84 OPTICS
North-Holland COMMUNICATIONS
Simulation of input electron noise in the free-electron laser
C. Penman
Faculteit der Technische Natuurkunde, Universiteit Twente, Postbus 217, 7500AE Enschede, Netherlands
and
B.W.J. McNeil
AEA Technology, Culham Laboratory, Culham 0)(14 3DB, UK
Received2January 1992
Wepresenta calculationof the shotnoiseto be usedas initial conditionfor the electron-beamphase-variablesin numerical
simulationsofthe free-electronlaser.
Numerical integration of the free-electron laser
equations usually starts with a small arbitrary value
of input field, to allow the FEL instability to show
itself. This procedure fails to reproduce the start-up
of the real laser and the time or distance to satura-
tion will depend on the arbitrary initial value. The
procedure is obviously valid only for initial field-val-
ues larger than the random fluctuations in the real
system; even if the level of these fluctuations is used

  

Source: Al Hanbali, Ahmad - Department of Applied Mathematics, Universiteit Twente

 

Collections: Engineering