Development of shintake beam size monitor for ATF2

Y. Kamiya, S. Komamiya, M. Oroku, T. Suehara, Y. Yamaguchi, T. Yamanaka, S. Araki, T. Okugi, T. Tauchi, N. Terunuma, J. Urakawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


In this paper, we describe a system design and current status of Shintake beam size monitor. Shintake monitor is a laser-based beam diagnostics tool, which provides a non-invasive measurement of transverse beam sizes. The interaction target probing the electron beam is interference fringes build up by the two coherent lasers that have narrow bandwidth and long coherent length. A scale of the target structure corresponds to approximately one fourth of the laser wave length, and the smallest measurable size reaches down to several tens of nanometers. The monitor we described here is installed at the virtual interaction point of the ATF2 beam line, which is built to confirm the proposed final focus system for Future Linear Colliders. We adopt second harmonics of Nd:YAG laser of 532 nm wavelength, and phase stabilization feedback system to allow to measure the designed beam size of about 37 nm. To widen a measurable range up to about 5 microns (wire scanner's range), we also prepare three crossing modes that change an effective wavelength for the fringes. The monitor is used to measure a focus size during the tuning process. The system is based on the Shintake monitor for FFTB.

Original languageEnglish
Title of host publicationIPAC 2010 - 1st International Particle Accelerator Conference
Number of pages3
Publication statusPublished - Dec 1 2010
Externally publishedYes
Event1st International Particle Accelerator Conference, IPAC 2010 - Kyoto, Japan
Duration: May 23 2010May 28 2010

Publication series

NameIPAC 2010 - 1st International Particle Accelerator Conference


Other1st International Particle Accelerator Conference, IPAC 2010

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


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