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TY - CONF AU - Yee-Rendón, B. AU - Kuboki, H. AU - Muto, R. AU - Satou, K. AU - Tomizawa, M. AU - Toyama, T. AU - Uota, M. ED - Schaa, Volker RW ED - Petit-Jean-Genaz, Christine ED - Ko, In Soo ED - Kim, Dong Eon ED - Kim, Kyung Sook TI - Electron Cloud Measurements at J-PARC Main Ring J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - Electron cloud instability is presented in most of the high intensity proton rings. During the Slow beam extraction (SX) mode at Main Ring of J-PARC, signals related with its formation were observed. An electron cloud detector is installed downstream of the ElectroStatic Septum (ESS), to measure the electron signal. Additionally, scintillation detector with photomultiplier, a proportional counter and photo-diode were set closely to the electron cloud detector to observe the beam lost. This paper presents the measurements of the electron cloud and some of the conditions which support its creation, for instance the signal of lost particle from the beam loss monitors, the residual gas in the vacuum duct by using vacuum pressure gauges, etc. PB - JACoW CP - Geneva, Switzerland SP - 137 EP - 139 KW - electron KW - detector KW - vacuum KW - proton KW - extraction DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-MOPMB024 UR - http://jacow.org/ipac2016/papers/mopmb024.pdf ER -