Activities of optical laboratories 1 and 2 at the Photon Factory

Abstract

Recent activities at optical laboratories 1 and 2 at the Photon Factory are presented. The activities are (i) construction of optical laboratory 1, (ii) reconstruction of optical laboratory 2, (iii) construction of a visible synchrotron radiation beam extraction mirror made of beryllium, (iv) small-beam-pro®le measurement by means of the image restoration method, (v) application of the adaptive optical system for correction of distorted wavefronts caused by deformation of the extraction mirror, (vi) construction of a synchrotron radiation interferometer for investigation of the spatial coherency of the visible synchrotron radiation beam and its application to the measurement of vertical beam pro®le and size.

KEKB beam instrumentation systems

“…The surface temperature was estimated to be 60 • C for the maximum power input by a thermal simulation. To watch the thermal deformation of a beryllium extraction-mirror, we set a Shack-Hartmann wavefront sensor [22]. An outline of the extraction-mirror system is shown in Fig.…”

“…For a singlewavelength λ of the incident SR, the interferogram from the double slits having a separation of w has an intensity distribution y(x) of the form [22]:…”