[en] A brief report is presented on the initial steps taken by the University of Ife in Nigeria to set up a tandem Van de Graaff laboratory

[en] Design specificatons and performance of the VICKSI beam line are summarized

[en] A preliminary feasibility study was made for the purification of SF₆ vapor contaminated with air for application at the Holifield Heavy Ion Research Facility. Liquefaction appears to be a good way to recover about 90% of the SF₆ if it is badly contaminated (15% air), and even greater recovery will be possible for mixtures containing less air. Where liquefaction is insufficient alone, adsorption of SF₆ on activated carbon at -50⁰F looks promising. Two carbon beds each containing about 500 lb of carbon should be sufficient. The refrigeration system for liquefaction and adsorption would have a capacity of about 2 tons. As alternatives, the use of molecular sieves to trap out the air was investigated, but such a bed would require at least 15,000 lb of molecular sieves and very long cycle times. A large-scale desublimer was investigated and appears workable but would require some development work to permit design work to proceed with confidence

[en] The control system of the VICKSI-accelerator facility is based on the following features: standardized hardware which is commercially available; peripheral interfacing standards considering hardware and software aspects; comprehensive operator interface which is easy to use; man--machine communication routed through the computer; system information held in a central data base; accelerator parameters identified by names; and interpreter for interactive and flexible system use. The present state of the system allows full control and monitoring of the whole accelerator and incorporates about 2000 system variables. In the following a short description of the hardware and software of the control system and of the telemetry system for the Van de Graaff injector is given

[en] A transcript of a discussion centering on charging chains and resistors in electrostatic accelerators is presented

[en] The intention of the Argentine Atomic Energy Commission to install a large electrostatic accelerator is announced. Plans for a NEC 20UD are discussed and a comparison is made to other possible configurations

[en] A system for separation of air from SF₆ using a column loaded with 13X molecular sieve pellets is described. Performance of such a system at Chalk River is described

[en] The 10 MV vertical single-ended Van de Graaff in the Nuclear Physics Laboratory at Oxford University has been converted to a folded tandem and is now in operation. Preparations for the conversion began four years ago and the accelerator was shut down for the changeover in July 1977. The first beam of ⁴He²⁺ ions was transmitted through the machine on September 7, 1978. Since then the test program has been devoted to measuring the properties of the transmitted beam and extending the operating voltage and beam current

[en] A review of ion sources in which charge exchange with metal vapor is used is presented

[en] Rocket plots, a new type of display for charge state intensities for tandem accelerators, offer several advantages over previous formats. They are compact, comprehensive, efficient, and facilitate experiment planning and beam preparation