Radiation of SPring-8 very long undulators

Authors
Marechal, XM Bizen, T Hara, T Seike, T Tanaka, T Kitamura, H
Citation
Xm. Marechal et al., Radiation of SPring-8 very long undulators, NUCL INST A, 467, 2001, pp. 134-137
Citations number
16
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
467
Year of publication
2001
Part
1
Pages
134 - 137
Database
ISI
SICI code
0168-9002(20010721)467:<134:ROSVLU>2.0.ZU;2-U
Abstract
A key feature of the SPring-8 storage ring is the presence of four 30 m lon g straight sections for the installation of very long insertion devices. Tw o characteristics of very long undulators are presented here: first, the pr oblems brought by the necessity to phase the individual segments, which in turn, imposed the use of the in-vacuum technology; next, the near-field eff ects which appear on-axis as these undulators length is comparable to the d istance between the observation point and the source. (C) 2001 Elsevier Sci ence B.V. All rights reserved.