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@unpublished{sato:hb2023-moa2i1, author = {Y. Sato and H. Hotchi}, title = {{Beam Commissioning of the J-PARC Mr After Its High-Repetition Rate Upgrade}}, % booktitle = {Proc. HB'23}, booktitle = {Proc. ICFA Adv. Beam Dyn. Workshop High-Intensity High-Brightness Hadron Beams (HB'23)}, eventdate = {2023-10-09/2023-10-13}, language = {english}, intype = {presented at the}, series = {ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams}, number = {68}, venue = {Geneva, Switzerland}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {04}, year = {2024}, note = {presented at HB'23 in Geneva, Switzerland, unpublished}, abstract = {{At the J-PARC MR, a project to increase beam power with faster repetition rates is currently underway. With large-scale hardware upgrades in Jul. 2021 to Jun. 2022, the MR operation cycle for the fast extraction mode has been shortened from 2.48 s to 1.36 s, and beam commissioning at this operation cycle is in progress now. The MR first aims to achieve a beam power of >750 kW at this operation cycle, and then finally 1.3 MW by further shortening the operation cycle to 1.16 s and with a higher beam intensity of 3.3 x 10¹⁴ ppp. This paper describes the beam commissioning status including the future prospect.}}, }