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TY - CONF AU - Edelen, J.P. AU - Biedron, S. AU - Harris, J.R. AU - Lewellen, J.W. AU - Milton, S.V. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - An Improved Analytic Model of Electron Back-Bombardment in Thermionic Cathode RF Guns J2 - Proc. of IPAC2015, Richmond, VA, USA, May 3-8, 2015 C1 - Richmond, VA, USA T2 - International Particle Accelerator Conference T3 - 6 LA - english AB - This paper describes work done at Colorado State University to improve upon the recent theory developed to predict the back-bombardment power in single-cell thermionic-cathode electron guns. The previous theory used a square-wave approximation of the time varying field to solve for the total kinetic energy deposited on the cathode due to the back-bombarded electrons. In addition the transit time factor was added as a correction to compensate for the non-sinusoidal field. By solving for the back-bombardment power using a sinusoidal field, the transit time factor can be removed and therefore a better overall model is produced. These alterations continue to accurately predict how back-bombardment varies as a function of the gun parameters and provides improvement when compared to the existing theory. PB - JACoW CP - Geneva, Switzerland SP - 1872 EP - 1874 KW - simulation KW - gun KW - electron KW - cathode KW - cavity DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-TUPMA018 UR - http://jacow.org/ipac2015/papers/tupma018.pdf ER -