Vacuum news
New literature
Vacuum technical information
Vacuum Generators Limited are now introducing a series of technical bulletins to assist vacuum users in the choice of the best vacuum equipment for their applications. Subjects of this series will include: lJHV flanges; UHV valves; UHV vessel design ; clean rough pumping systems; clean and ultrahigh vacuum pumping systems; pressure measuring equipment (Ion and Pirani gauges); sputter-ion pumped vacuum system operating procedure ; and residual gas analysis and vacuum systems. Each of these bulletins bas been compiled bv Application Engineers with extensive experience in the lJHV field and is claimed to contain a wealth of practical information not to be found in existing vacuum publications. Vacuum Generators now offer two basic ranges of all metal flanges with a third series which is an improved matched range to one of the basic series. These are respectively FC copper gasket flanges compatible with most flanges currently- being supplied by vacuum companies such as AEI. GEC. Ferranti, Varian, etc, FF gold wire seal flai flanges and FS gold seal spigot flanges. Since these basic components are the first consideration in the design of clean UHV systems, Vacuum Generators have made available bulletins for UHV flanges, UHV all-metal valves and UHV vessel design, the latter being of particular interest where stainless steel fabrications are required. These bulletins are freely available and may be obtained by writing to: Technical Information Vacuum, Vacuum Generators Limited, Charlwoods, East Grinstead, Sussex. Vacuum News Letter
The AEI Vacuum News letter for May 1968 reports the appointment of Mr D J C’rawley as Engineer-in-Charge, Vacuum Products. Mr Ciawley comes io’AE1 from Edwards Hiah Vacuum where for the nast 16 years he has specialised in d&&& pumps and specific pumps, electronic UHV problems. Brief notes appear on triode ion pumping, custom engineering facilities, the trigger gauge, the UHV 4 bench top system and Minimass. Complete data sheets are supplied for AEI’s hot cathode ion gauges, the VC9 and VClO ion gauge controls and the VC14 trigger gauge. Literature from Mason-Renshaw
Mason-Renshaw Industries are distributing a 13-page information package describing their expanded line of flexible metal tubing, high vacuum couplings, glass-to-metal tubing seals, high vacuum systems and thin wall stainless steel tubing. Six new items are announced for the first time: a line of 14 inch diameter flexible metal tubing: flexible metal tubing in lengths up to 36 inches: special configurations of flexible tubing’wfiere two flexible sections on the same piece of tubing may be separated by
up to 10 feet of straight (non-flexible) tubing: “Super-Stretch”. oarticularlv adaotablenew flexible metal’t;bing line; a new coupling suitable for direct use on glass tubing; and a novel joining method for thin wall tubing which does not involve welding or brazing.
Commercial
news
Custom engineering facility
Varian Associates have established extensive facilities for custom engineering of vacuum components. In a recent newssheet a general list of components included chambers, pumps, bell jars, valves, feedthroughs, manifolds, flanges, ceramic-tometal seals, baseplates, adapters, glass fittings and viewing ports. The service is claimed to guarantee clean leak-free components compatible with standard fittings. This service is available in the UK through Varian’s manufacturing plant at Donibristle Industrial Estate in Fife, Scotland. This plant was opened in February 1967 and in conjunction with the production of Varian vacuum equipment, the major activity has been the construction of the beam transport section of a linear accelerator as part of the DESY Project. Piping, vacuum pumps, and control instrumentation are all being produced at the Donibristle plant. Part of the work associated with the ion pump contract recentlv awarded bv CERN is also being perfbrmed there. -The Varian engineers will design and fabricate components from customer specifications consisting of simple hand-drawn sketches with the critical dimensions indicated. Increase in engineering
production
for
mechanical
The Economic Development Committee for Mechanical Engineering have forecast in the May edition of their quarterly report that the index of production will rise by 5 to 6 per cent in 1968 over last year’s figure. Exports at current prices for the period December 1967 to March 1968 were 19 per cent higher than for the first eleven months of 1967. In Dart this is due to the aftermath of the dock strike but it may also reflect some improvement resulting from devaluation. New orders in the light/ medium sector of the industry rose significantly from the third to the fourth auarter of 1967. There was an encouraging improvement in orders and mecha&i handling equipment and for ball and roller bearings. In the heavy engineering sectors a long period cyclical fluctuation was in evidence indicating that the order position continued to deteriorate. There has been a fall in the delivery of chemical plant and in orders for shell boilers and boiler house plant. Investment Industries
by
the
Process
and
Allied
The Process Plant Working Party have produced a third report forecasting expenditure during 1968, 1969 and 1970 in
the UK by the Process and Allied industries export and reporting on contractors’ targets. The report also looks briefly at the international context of the UK market. Forecasts by the chemical, oil refining and industries show a gas manufacturing slightly declining trend (of the order of 10 per cent over 3 years) from peak levels in 1966 and 1967. This is mainly due to the virtual cessation of investment in gas manufacturing plants. However, forecasts for expenditure associated with the distribution of North Sea Gas were sharply up. Chemical engineering contractors have set themselves notably high targets for overseas business. Growth in sales by British process plant hardware manufacturers over the next two to three years will therefore have to come not from increased UK investment by the process industries but from a combination of import saving and expansion of exports, in both of which they are helped by devaluation.
Conferences and group activities The IEA Exhibition 1968
This years’ Instruments, Electronics and Automation Exhibition was hailed by Dr D 0 Walker, chairman of the Exhibition Committee, as “something more than the greatest technical show of its kind”. Subsequent reports have confirmed that a record-breaking total for cash transactions was established over the Exhibition period. Some 800 exhibitors occupied the 250,000 square feet of the Olympia, London from the 13th-16th May 1968. From the point of view of vacuum technology, the major interest of the Exhibition lay in the variety of automatic and control instrumentation presented, mainly for applications utilizing the rough vacuum range. Some ten firms offered vacuum gauges for the range down to about 10-a torr. High vacuum equipment appeared only on the stands of Varian, Veeco and Norton International Inc, the parent company of National Research Corporation, although Sloan Instruments Corp and G V Planer Ltd showed their established thin film and electron beam equipment. Bell and Howell Ltd, Ferranti Ltd and GEC-AEI (Electronics) Ltd, understandably, concentrated on the automatic control;computer, and communications systems. Mullard Ltd had very little equipment on view, but offered a comfortable lounge room where visitors could consult several of the company’s engineers. Varian Associates showed their rf induced plasma sputtering system and their VI221 UHV system incorporating a new quadrupole analyzer and the new isolation valve with polyimide seals. Veeco Instruments Inc, exhibited the MSB/VBC Leak Detector, the monopole Residual Gas Analyzer and High Vacuum Gauges and controls. Lambda Electronics, acquired last year by Veeco, offered power supplies carrying a five-year guarantee. Norton International presented their VHS diffusion pumping 419