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TY - CONF AU - Iwata, S. AU - Ishii, K. AU - Matsumoto, H. AU - Matsumoto, N. AU - Sato, Y. AU - Shibata, T. AU - Sugimoto, T. ED - Liu, Lin ED - Byrd, John M. ED - Neuenschwander, Regis T. ED - Picoreti, Renan ED - Schaa, Volker R. W. TI - Layout of the New Septum Magnets for Fast Extraction in J-PARC Main Ring J2 - Proc. of IPAC2021, Campinas, SP, Brazil, 24-28 May 2021 CY - Campinas, SP, Brazil T2 - International Particle Accelerator Conference T3 - 12 LA - english AB - At J-PARC Main Ring (MR), we are pursuing to improve the beam power from 500 kW to 1.3 MW by reducing the repetition cycle from 2.48 to 1.16 seconds (1 Hz operation). Additionally, we are considering the beam particles increasing by selecting a more optimal tune. The fast extraction (FX) equipment to the neutrino facility (NU) is needed to upgrade for the 1 Hz operation. We plan to replace most FX septum magnets with new ones in 2021. We report a layout of the FX line in confirmation of new beam optics and mention the beam loss during the fast extraction. PB - JACoW Publishing CP - Geneva, Switzerland SP - 3103 EP - 3105 KW - septum KW - extraction KW - operation KW - simulation KW - emittance DA - 2021/08 PY - 2021 SN - 2673-5490 SN - 978-3-95450-214-1 DO - doi:10.18429/JACoW-IPAC2021-WEPAB204 UR - https://jacow.org/ipac2021/papers/wepab204.pdf ER -