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TY - CONF AU - Yotsuzuka, M. AU - Futatsukawa, K. AU - Hasegawa, K. AU - Iijima, T. AU - Iinuma, H. AU - Inami, K. AU - Kawamura, N. AU - Kitamura, R. AU - Kondo, Y. AU - Mibe, T. AU - Miyake, Y. AU - Morishita, T. AU - Nakazawa, Y. AU - Otani, M. AU - Saito, N. AU - Shimomura, K. AU - Sue, Y. AU - Yamazaki, T. AU - Yasuda, H.Y. ED - Boland, Mark ED - Tanaka, Hitoshi ED - Button, David ED - Dowd, Rohan ED - Schaa, Volker RW ED - Tan, Eugene TI - Development of the Longitudinal Beam Monitor with High Time Resolution for a Muon LINAC in the J-PARC E34 Experiment J2 - Proc. of IPAC2019, Melbourne, Australia, 19-24 May 2019 CY - Melbourne, Australia T2 - International Particle Accelerator Conference T3 - 10 LA - english AB - The J-PARC E34 experiment aims to measure the muon anomalous magnetic moment and the electric dipole moment with a high precision. In this experiment, ultra-slow muons generated from thermal muonium production and laser resonance ionization are accelerated in a multistage muon linac. In order to satisfy the experimental requirements, a suppression of the emittance growth between different accelerating cavities is necessary, and the transverse and longitudinal beam matching is important. Longitudinal beam monitor has to measure the bunch width with a precision of 1% corresponding to several tens of picoseconds. In addition, the beam monitor should be sensitive to a single muon, because the beam intensity during the commissioning is lower than the designed intensity. Therefore, we are developing a longitudinal beam monitor using a microchannel plate (MCP), and a measurement system using photoelectrons to estimate the performance of the beam monitor. On November 2018, the beam monitor has been successfully used in the muon RF acceleration test at the J-PARC. In this presentation, the results of the performance evaluation for this beam monitor are reported. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2571 EP - 2574 DA - 2019/06 PY - 2019 SN - 978-3-95450-208-0 DO - DOI: 10.18429/JACoW-IPAC2019-WEPGW042 UR - http://jacow.org/ipac2019/papers/wepgw042.pdf ER -