A new multifunctional ion beam materials laboratory (IBML) has been established at the University of Tennessee, in partnership with Oak Ridge National Laboratory. The IBML is currently equipped with ...two ion sources, a 3 MV tandem accelerator, three beamlines and three endstations. The IBML is primarily dedicated to fundamental research on ion–solid interaction, ion beam analysis, ion beam modification, and other basic and applied research on irradiation effects in a wide range of materials. An overview of the IBML facility is provided, and experimental results are reported to demonstrate the specific capabilities.
This paper describes a gas handling system for model MP Van de Graaff accelerators, using components with high pumping capacities together with gas temperature controls and heat exchangers to limit ...the temperature changes that accompany rapid gas pumping.
Vertical beam jitter is detrimental for some experiments. The cause is traced to non-uniform charge distribution on the belt. A device is described which suppresses the jitter.
We describe a system which makes use of the conventional means of controlling the terminal voltage of an electrostatic accelerator (FN Tandem) by shunt current from corona points. The voltage is ...sensed with a beam-deflection system or a generating-voltmeter (GVM) signal, or a combination of the two methods. The electronic design differs considerably from previous designs, the emphasis being placed upon functional simplicity, reliability, and ease of operation. The performanance results are indicative of the use of SF6 as a filling gas.
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