The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Mitsuhashi, T.M. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Recent Trends in Beam Size Measurements using the Spatial Coherence of Visible Synchrotron Radiation J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - The optical method of measuring the transverse beam profile and size using visible synchrotron radiation (SR) began with simple imaging systems. The resolution was limited by both the diffraction and the wavefront error making it difficult to resolve beam sizes less than 50 μm. Instead of imaging, a method for measuring the beam profile and size using the spatial coherence was introduced. The method is based on Van Cittert-Zernike’s theorem, and can resolve 4-5 μm beam sizes with an error of only 0.5 μm. In this presentation, the principle of the measurement, the SR interferometer design, and some resent measurement results are reviewed. The incoherent field depth effect for the horizontal beam size measurement is also described with some results. Design study calculations for the SR interferometer at the LHC will be presented. PB - JACoW CP - Geneva, Switzerland SP - 3662 EP - 3667 KW - synchrotron KW - optics KW - radiation KW - photon KW - operation DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-THYC2 UR - http://jacow.org/ipac2015/papers/thyc2.pdf ER -