Upgrade of the ISIR-FEL at Osaka University and oscillation experiments inthe sub-millimeter wavelength region

Authors
Kato, R Okuda, S Kondo, G Kondo, S Kobayashi, H Igo, T Suemine, S Isoyama, G
Citation
R. Kato et al., Upgrade of the ISIR-FEL at Osaka University and oscillation experiments inthe sub-millimeter wavelength region, NUCL INST A, 429(1-3), 1999, pp. 146-150
Citations number
5
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
429
Issue
1-3
Year of publication
1999
Pages
146 - 150
Database
ISI
SICI code
0168-9002(19990611)429:1-3<146:UOTIAO>2.0.ZU;2-V
Abstract
The far-infrared free electron laser (FEL) at the Institute of Scientific a nd Industrial Research (ISIR), Osaka University has been upgraded to extend the wavelength region further to the long wavelength side. The present mod ification includes replacement of the optical resonator and installation of an evacuated optical transport line from the FEL to the measurement room a s well as installation of a far-infrared monochromator for measuring the wa velength of FEL light. We recently started experiments using the new FEL sy stem. The loss of light in the optical resonator was measured and it is exp erimentally confirmed that the diffraction loss is reduced considerably aft er the upgrade of the optical resonator. (C) 1999 Elsevier Science B.V. All rights reserved.