The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - UNPB AU - Popov, K. AU - Aryshev, A. AU - Terunuma, N. AU - Urakawa, J. ED - Kim, Changbum ED - Schaa, Volker R. W. ED - Kim, Dong-Eon ED - Lee, Jaeyu TI - KEK LUCX Facility Laser Transport Line Alignment Automatization J2 - Proc. of IBIC2021, Pohang, Rep. of Korea, 24-28 May 2021 CY - Pohang, Rep. of Korea T2 - International Beam Instrumentation Conference T3 - 10 LA - english AB - KEK LUCX facility* is a linear accelerator devoted to the beam instrumentation R&Ds for present and future accelerator systems and colliders. Parameters of electron beam generated by laser-driven photocathode-equipped gun are sensitive to laser wavelength, laser pulse intensity, duration (RMS), spot size (RMS) and spot position on the photocathode. Typically, tuning of such generation schema requires stable laser pulse generation and shaping, alignment of the laser transport line (LTL) and final focus optical system. Conventional diagnostics along LTL may include CCD cameras for position and profile tuning and monitoring including that at the virtual cathode position. An approach to achieve laser spot size and position with the high level of stability and reproducibility on the photocathode is associated with the implementation of geometric optics based software protocol which allows for automatic- or semi-automatic alignment of entire LTL. This approach was developed and applied for KEK LUCX RF gun LTL alignment. It employs two CCD cameras**, motorized mirrors and optical telescope designed for laser pulse delivery to the photocathode. The report shows the system stability and repeatability results, as well as commissioning technical notes. PB - JACoW Publishing CP - Geneva, Switzerland ER -