Tandem proton accelerator as injector for TRAPP

To inject protons to the TRAPP (synchrotron for therapy of cancer) a tandem accelerator has been constructed. Its parameters are: protons energy is 1.4 MeV, current is 3 mA, pulse duration is 2 μs, frequency is up to 1 Hz. Negative hydrogen ions are extracted through the slit from a magnetron discharge on the heated surface of the LaB6 cathode. The beam of negative ions with an initial energy of 25 kV accelerates up to the half energy in the first accelerating tube, than recharges into protons in gas nitrogen target in a tube at a potential of 700 kV. After that, the proton beam doubles its energy in the second accelerating tube. Operating and control of the tandem are by means of computer

Tool for Assessing the Risks of R&D Projects Implementation in High-tech Enterprises

The article gives a tool for assessing the risks of R&D projects implementation in high-tech enterprises including aerospace industry. The tool is algorithms and calculation formulas that help to make risk assessments at each stage of project implementation. Special attention is attached to the analysis of the most common risks that arise in the course of R&D projects implementation. These risks are divided into three groups: risks that affect the project R&D projects deadlines; risks, affecting the R&D projects financing; risks, associated with the technological characteristics of the projected facility features. This can be fully applied for innovative projects in aerospace industry including development of new materials and composite technologies. The calculation algorithms of the techniques are adapted for computer calculations and the use of statistical data instead of expert estimates contributes to the increase of accuracy and objectivity of calculations. © 2019 Published under licence by IOP Publishing Ltd

Modernization of cooling system of roller-hearth furnaces

Translated from Russian (Stal' 1986 (4) p. 99-100)SIGLEAvailable from British Library Document Supply Centre- DSC:5828.4(M--36932)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo

Modernizing muffle furnaces for recrystallization annealing

Translated from Russian (Stal' 1986 (5) p. 97-100)SIGLEAvailable from British Library Document Supply Centre- DSC:5828.4(M--36964)T / BLDSC - British Library Document Supply CentreGBUnited Kingdo