EFFECTS OF AN OPTICAL KLYSTRON ON THE ELECTRON-BEAM OF THE STORAGE-RING NIJI-IV FOR FREE-ELECTRON LASERS

Authors
YOKOYAMA M SEI N KAWAI M YAMADA K HAMADA S SUGIYAMA S OHGAKI H MIKADO T NOGUCHI T SUZUKI R CHIWAKI M YAMAZAKI T
Citation
M. Yokoyama et al., EFFECTS OF AN OPTICAL KLYSTRON ON THE ELECTRON-BEAM OF THE STORAGE-RING NIJI-IV FOR FREE-ELECTRON LASERS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 358(1-3), 1995, pp. 378-381
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
358
Issue
1-3
Year of publication
1995
Pages
378 - 381
Database
ISI
SICI code
0168-9002(1995)358:1-3<378:EOAOKO>2.0.ZU;2-W
Abstract
We have simulated the effects of a 6.3-m optical klystron (OK) on the electron beam in the compact storage ring NIJI-IV dedicated to free-el ectron lasers (FELs) by using the exact treatment of the transfer matr ices of the OK. It was found that the focusing force of the OK produce d distortion of betatron functions and cuts along resonance lines in t he stability region in the betatron-tune diagram. Some of the results derived from the simulations were in reasonable agreement with experim ental results. The method of simulation has thus proved to be quite ef fective in finding a good operating condition of a ring for satisfacto ry FEL performance especially in the case of a compact storage ring li ke the NIJI-IV with a long insertion device.