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TY - UNPB AU - Jung, H.W. AU - Hong, H.B. AU - Park, C.W. ED - Kim, Changbum ED - Schaa, Volker R. W. ED - Kim, Dong-Eon ED - Lee, Jaeyu TI - Beam Performance Analysis According to Voltage Changes of Ion Source Extraction of Electrostatic Accelerator for BNCT 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 - The types of accelerators used in BNCT(Boron neutron capture therapy) systems worldwide are classified as cyclotrons, LINACs, and electrostatic accelerators. The cyclotron-based BNCT system is undergoing clinical trial approval. In order to develop BNCT, the efficiency of the electrostatic accelerator ion source is important. In particular, it should be possible to maintain the optimal beam current by controlling the extraction, plasma, filament, and arc of the ion source. A set value is required for the desired beam current. In this article, the performance of the beam current was confirmed by changing the extraction voltage using the ion source of the KIRAMS’s static accelerator. In this experiment, plasma voltage, bias voltage, and extraction voltage were set as fixed values. After the extraction voltage was set to 2 kV, the beam current was set to 1 mA, 1.5 mA, 2 mA, 3 mA for each experiment. After that, the data was extracted by adjusting the extraction voltage by 0 - 0.2 kV. The extracted data result shows how the output beam current changes when the extraction voltage changes. PB - JACoW Publishing CP - Geneva, Switzerland ER -