CERN Accelerating science

Article
Title	Impedance Analysis of Longitudinal Bunch Shape Measurements at PLS
Author(s)	Hwang, Ilmoon ; Han, Yeung-Jin ; Kim Eun San ; Yoon, Moohyun
Affiliation	(PAL, Pohang) ; (POSTECH, Pohang, Kyungbuk)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.e-proc. TPAT011
Subject category	Accelerators and Storage Rings
Abstract	We measured the longitudinal bunch shape by streak camera at 2.5 GeV Pohang Light Source. The impedances estimated by a series R+L model indicate a resistance R= 960 ohm, an inductance L= 80 nH and a longitudinal impedance Z/n= 0.53 ohm. The scaling law for the bunch lengthenig is expressed as I<sup><font size="-1">0