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TY - CONF AU - Ruo, R. AU - Du, L. AU - Du, T. AU - Guan, W.Q. AU - Guan, X. AU - He, Y. AU - Li, J. AU - Tang, C.-X. AU - Tang, R. AU - Wang, X.W. AU - Xing, Q.Z. AU - Zhang, H.Y. AU - Zhang, Q.Z. ED - Petit-Jean-Genaz, Christine ED - Kim, Dong Eon ED - Kim, Kyung Sook ED - Ko, In Soo ED - Schaa, Volker RW TI - Design of the Low Energy Beam Transport Line for Xi‘an Proton Application Facility J2 - Proc. of IPAC2016, Busan, Korea, May 8-13, 2016 C1 - Busan, Korea T2 - International Particle Accelerator Conference T3 - 7 LA - english AB - Xi‘an Proton Application Facility (XiPAF) is a new proton project which is being constructed for single-event-effect experiments. It can provide proton beam with the maximum energy of 200 MeV. The accelerator facility of XiPAF mainly contains a 7 MeV H⁻ linac injector and a proton synchrotron accelerator. The 7 MeV H⁻ linac injector is composed of an ECR ion source, a Low Energy Beam Transport line (LEBT), a Radio Frequency Quadrupole accelerator (RFQ) and a Drift Tube Linac (DTL). The 50 keV 10 mA H⁻ beam (pulse width 1ms) extracted from the ion source is expected to be symmetric with the Twiss parameters alpha=0 and β=0.065 mm/mrad. The RMS normalized emittance is required to be less than 0.2 π mm·mrad. With an adjustable collimator and an electric chopper in the 1.7 m-long LEBT, the beam pulse width of 10~40μs and peak current of 6 mA can be obtained. The H⁻ beam is matched into the downstream RFQ accelerator with alpha=1.051 and β=0.0494 mm/mrad. This paper shows the detailed design process of the LEBT and simulation result with the TRACEWIN code. PB - JACoW CP - Geneva, Switzerland SP - 1343 EP - 1345 KW - rfq KW - ion KW - solenoid KW - ion-source KW - simulation DA - 2016/06 PY - 2016 SN - 978-3-95450-147-2 DO - 10.18429/JACoW-IPAC2016-TUPMR041 UR - http://jacow.org/ipac2016/papers/tupmr041.pdf ER -