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TY - CONF AU - Tan, J. AU - Bellodi, G. AU - Feschenko, A. AU - Gavrilov, S.A. ED - Schaa, Volker RW TI - Results from the CERN LINAC4 Longitudinal Bunch Shape Monitor J2 - Proc. of IBIC2018, Shanghai, China, 09-13 September 2018 CY - Shanghai, China T2 - International Beam Instrumentation Conference T3 - 7 LA - english AB - The CERN Linac4 has been successfully commissioned to its nominal energy and will provide 160 MeV H⁻ ions for charge-exchange injection into the Proton Synchrotron Booster (PSB) from 2020. A complete set of beam diagnostic devices has been installed along the accelerating structures and the transfer line for safe and efficient operation. This includes two longitudinal Bunch Shape Monitors (BSM) developed by the Institute for Nuclear Research (INR, Moscow). Setting-up the RF cavities of Linac4 involves beam loading observations, time-of-flight measurements and reconstruction of the longitudinal emittance from phase profile measurements. In this paper the BSM is presented along with some results obtained during accelerator commissioning, including a comparison with phase measurements performed using the Beam Position Monitor system. PB - JACoW Publishing CP - Geneva, Switzerland SP - 415 EP - 419 KW - linac KW - cavity KW - MMI KW - electron KW - emittance DA - 2019/01 PY - 2019 SN - 978-3-95450-201-1 DO - DOI: 10.18429/JACoW-IBIC2018-WEPA19 UR - http://jacow.org/ibic2018/papers/wepa19.pdf ER -