Searcharxiv⌕ Search

arXiv subjects

H-S. Han

Publications and source records attributed to H-S. Han.

2 recordsLinked to original sources
arXiv2016

Suppression of Vertical Oscillation and Observation of Flux Improvement during Top-up Injection at PLS-II

This paper reports a start-to-end study of suppression of stored beam oscillation at PLS-II. We report that the fast counter-kicker implemented in PLS-II suppressed vertical oscillation of the stored beam. During top-up injection in the magnetic spectroscopy beamline of PLS-II, the stored beam oscillation was suppressed by a factor of nine, and flux was improved by a factor of three.

physics.acc-ph↗
arXiv2016

A New PLS-II In-Vacuum Undulator and Characterization of Undulator Radiation

This paper describes the result of overall studies from development to characterization of undulator radiation. After three years of upgrading, PLS-II [1, 2] has been operating successfully since 21st March 2012. During the upgrade, we developed and installed an in-vacuum undulator (IVU) that generates brilliant X-ray beam. The IVU with 3 GeV electron beam generates undulator radiation up to ~ 21 keV using 11th higher harmonic. The characterizations of the undulator radiation at an X-ray beam line in PLS-II agreed well with the simulation. Based on this performance demonstration, the in-vacuum undulator is successfully operating at PLS-II.

physics.acc-ph↗