Author: Furukawa, Y.
Paper Title Page
TUOB03 Demonstration of a Newly Developed Pulse-by-pulse X-Ray Beam Position Monitor in SPring-8 182
  • H. Aoyagi, Y. Furukawa, S. Takahashi, A. Watanabe
    JASRI/SPring-8, Hyogo, Japan
  Funding: This work was partly supported by Japan Society for the Promotion of Science through a Grant-in-Aid for Scientific Research (c), No. 20416374 and No. 18K11943.
A newly designed pulse-by-pulse X-ray beam position monitor (XBPM), which is photoemission type, has been demonstrated successfully in the SPring-8 synchrotron radiation beamline. Conventional XBPMs work in the direct-current (DC) mode, because it is difficult to measure a beam position in the pulse mode under the sever heat load condition. The key point of the design is aiming at improving heat-resistance property without degradation of high frequency property [1]. This monitor is equipped with microstripline structure for signal transmission line to achieve pulse-by-pulse beam position signal. A photocathode is titanium electrode that is sputtered on a diamond heat sink to achieve high heat resistance. We have manufactured the prototype, and demonstrated feasibility at the SPring-8 bending magnet beamline. As a result, we observed a unipolar single pulse with the pulse length of less than 1 ns FWHM and confirmed that it has pulse-by-pules position sensitivity [2]. Furthermore, this monitor can be also used in the direct-current mode with good stability and good resolution. The operational experience will be also presented.
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