The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Bahlo, T. AU - Arnold, M. AU - Pforr, J. AU - Pietralla, N. AU - Schließmann, F. ED - Liu, Zhengzheng ED - Lidia, Steven ED - McCausey, Amy ED - Schaa, Volker RW TI - Time-of-Flight Measurements and Analysis of the Longitudinal Dispersion at the S-DALINAC J2 - Proc. of IBIC2017, Grand Rapids, MI, USA, 20-24 August 2017 C1 - Grand Rapids, MI, USA T2 - International Beam Instrumentation Conference T3 - 6 LA - english AB - The Superconducting Darmstadt Linear Accelerator S-DALINAC is capable of accelerating electrons to kinetic energies of up to 130 MeV. Due to its three recirculating beamlines the 30 MeV main linac can be used up to four times. The electron beam is recirculated non-isochronously with a distinct longitudinal dispersion to conserve the energy spread of the injector. Time-of-flight measurements at the beamline connecting injector and main linac will be presented, showing a non-linear dependency on the energy. This effect can be reproduced by simulations using elegant and are caused by traversing accelerating cavities with a small transversal displacement and a small angular deviation. Besides the first recirculation beamline does not provide enough degrees of freedom to set the desired longitudinal dispersion for the non-isochronous recirculation mode. This has to be compensated in succeeding recirculation beamlines or by installation of additional magnets at the first recirculation beamline. Possible beamline modifications and time-of-flight measurements representing the longitudinal dispersion will be presented. PB - JACoW CP - Geneva, Switzerland SP - 57 EP - 60 KW - ion KW - recirculation KW - linac KW - cavity KW - electron DA - 2018/03 PY - 2018 SN - 978-3-95450-192-2 DO - 10.18429/JACoW-IBIC2017-MOPCC08 UR - http://jacow.org/ibic2017/papers/mopcc08.pdf ER -