DESIGN OF AN OPTICAL CAVITY IN THE NIJI-IV FOR HIGH-OUTPUT POWER

Authors
SEI N YAMAZAKI T YAMADA K MIKADO T OHGAKI H
Citation
N. Sei et al., DESIGN OF AN OPTICAL CAVITY IN THE NIJI-IV FOR HIGH-OUTPUT POWER, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 393(1-3), 1997, pp. 59-63
Citations number
8
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
393
Issue
1-3
Year of publication
1997
Pages
59 - 63
Database
ISI
SICI code
0168-9002(1997)393:1-3<59:DOAOCI>2.0.ZU;2-G
Abstract
A new optical cavity system which efficiently takes out intense intrac avity power of a storage ring free electron laser (SRFEL) in the visib le and ultraviolet (UV) regions are planed. If a cavity mirror is star ted to rotate at the peak of an SRFEL macro-pulse to rapidly lead an S RFEL micro-pulse to the high transmission area, we can dump a part of the intracavity power sufficiently. A high-speed piezotranslator and a special mirror holder will realize this system, what is called cavity dump. The piezotranslator would make the optical cavity mirror rotate with the angular velocity of 2.52 x 10(-6) rad per one round-trip. In the case of NIJI-IV FELs, the output power of the micro-pulse would b e estimated at about 7600 times around 488 nm and about 2700 times aro und 352 nm as strong as that in the normal operation.