The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Peng, S.X. AU - Chen, J.E. AU - Guo, Z.Y. AU - Ren, H.T. AU - Xu, Y. AU - Zhang, A.L. AU - Zhang, J.F. AU - Zhang, T. AU - Zhao, J. ED - Henderson, Stuart ED - Akers, Evelyn ED - Satogata, Todd ED - Schaa, Volker R.W. TI - Gas Flow Influence on Negative Hydrogen Ion Generation within the Microwave-Driven Negative Ion Source 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 - H⁻ ion was generated through two processes within a volume Cs- free source. The density of molecule hydrogen gas will impact the electron temperature within the primary discharge chamber that will influence the population of vibrationally excited H2*. Within the extraction region, the interaction between molecule hydrogen and H⁻ ion will is cause the dissociation of negative ion. To better understand the gas flow influence on H⁻ ion generation within a volume negative ion source, a new Cs-free volume microwave-driven H⁻ source body with two gas inlets was developed at Peking University (PKU). Experiment on gas flow and gas pressure distribution within the plasma chamber was carried out with this source body. In the meantime a two dimensional (2D) model for gas flow was developed. Details will be presented in this paper. PB - JACoW CP - Geneva, Switzerland SP - 2555 EP - 2558 KW - ion KW - ion-source KW - electron KW - operation KW - experiment DA - 2015/06 PY - 2015 SN - 978-3-95450-168-7 DO - 10.18429/JACoW-IPAC2015-WEPWA027 UR - http://jacow.org/ipac2015/papers/wepwa027.pdf ER -