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Phys. Rev. ST Accel. Beams 6, 092802 (2003) [8 pages]

Measurements of electron beam emittance in the Accelerator Test Facility damping ring operated in multibunch modes

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Yosuke Honda and Noboru Sasao*
Department of Physics, Kyoto University, Kyoto 606-8502, Japan

Sakae Araki, Hitoshi Hayano, Yasuo Higashi, Kiyoshi Kubo, Toshiyuki Okugi, Takashi Taniguchi, Nobuhiro Terunuma, Junji Urakawa, and Yoshio Yamazaki
High Energy Accelerator Research Organization (KEK), Ibaraki 305-0801, Japan

Koichiro Hirano, Masahiro Nomura, and Mikio Takano
National Institute of Radiological Sciences (NIRS), Chiba 263-8555, Japan

Hiroshi Sakai
Institute for Solid State Physics, University of Tokyo, Tokyo 277-8581, Japan

Received 1 June 2003; published 24 September 2003

We present the measurement results of electron beam emittance in the Accelerator Test Facility damping ring operated in multibunch modes. The measurements were carried out with an upgraded laser wire beam profile monitor. The monitor has now a vertical wire as well as a horizontal one and is able to make much faster measurements thanks to an increased effective laser power inside the cavity. The measured emittance shows no large bunch-to-bunch dependence in either the horizontal or vertical directions. The values of the vertical emittance are similar to those obtained in the single-bunch operation. The present results are an important step toward the realization of a high-energy linear collider.

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© 2003 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevSTAB.6.092802
DOI:
10.1103/PhysRevSTAB.6.092802
PACS:
41.75.Ht

*Corresponding author.

Email address: sasao@scphys.kyoto-u.ac.jp