CERN Accelerating science

Article
Title	Vertical Beam Size Measurement by Streak Camera under Colliding and Single Beam Conditions in KEKB
Author(s)	Ikeda, Hitomi ; Flanagan, John W ; Fukuma, Hitoshi ; Funakoshi, Yoshihiro ; Hiramatsu, Shigenori ; Mitsuhashi, Toshiyuki ; Ohmi, Kazuhito ; Uehara, Sadaharu
Affiliation	(KEK, Ibaraki)
Publication	2005
In:	21st IEEE Particle Accelerator Conference, Knoxville, TN, USA, 16 - 20 May 2005, pp.3194
Subject category	Accelerators and Storage Rings
Abstract	Beam behavior of KEKB was studied by measurement of the beam size using a streak camera. Effect of the electron-cloud and the parasitic collision on the vertical beam size was examined in beam collision. We intentionally injected a test bunch of positrons after 2 rf buckets of a bunch to enhance the electron cloud effect and changed electron beam conditions to see the beam-beam effect. The beam size was also measured with a single positron beam and compared with that during collision. The result of the measurement is reported in this paper.