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TY - UNPB AU - Nanbu, K. AU - Hama, H. AU - Hinode, F. AU - Kashiwagi, S. AU - Muto, T. ED - Schaa, Volker RW ED - Jansson, Andreas ED - Shea, Thomas ED - Olander, Johan TI - Development of Beam Position Monitor Using Cherenkov Diffraction Radiation J2 - Proc. of IBIC2019, Malmö, Sweden, 08-12 September 2019 CY - Malmö, Sweden T2 - International Beam Instrumentation Conferenc T3 - 8 LA - english AB - Recently laser-plasma accelerators (LPAs) have attracted a lot of attention and have been developed actively toward practical applications worldwide. LPAs can accelerate electrons to high energy within a very short distance. However, its beam stability is still insufficient as compared with conventional RF accelerators. In addition, beam repetition rate is very low, consequently a beam pulse has to be diagnosed simultaneously with application. Cherenkov Diffraction Radiation (ChDR), which is the radiation generated when electrons pass near the dielectric material, will offer non-destructive beam diagnostics for LPAs. A basic experimental study on ChDR for developing a novel beam position monitor has been conducted at test accelerator facility, t-ACTS, in Tohoku University. We have investigated characteristics of ChDR from a hollow radiator and an intensity distribution of ChDR with respect to the electron beam position. PB - JACoW Publishing CP - Geneva, Switzerland ER -