Remont I Ekspluataciya Nissan H Terra
• Frankel, R.; Herman, A.; Stattel, P.; Warkentien, R. 1981-01-01 A low cost, highly reliable control system has been developed for use in the radiation environment of the ISABELLE ring. The Ultra-High Vacuum installation will consist of approximately 1500 stations - each having 8 readbacks, 4 on-off operations and 4 special functions - distributed over 2.5 mills. The paper will describe a multidrop party line system in which a μp based controller located in a protected environment communicates with up to 25 vacuum stations. All the μp controllers will be linked via the ISABELLE data highway. Mechanical, electronic and software aspects of the system are discussed and performance data from our First Cell model are presented • Buxton, W.; Frankel, R.; Humphrey, J.W.
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1977-01-01 The primary function of the ISABELLE half-cell control system is to monitor and control the magnet power supplies of the half-cell. In addition, the control system must be flexible enough that it can be expanded to become involved in additional areas such as vacuum and magnetic measurements. A control system based upon AGS control standards, but modified into a development tool for research and electrical engineering support was constructed. Special attention was given to the inherent differences between controlling an ISABELLE and a conventional fast cycling accelerator. The use of FORTRAN and BASIC networks, and microprocessors is reviewed insofar as they pertain to this system. Some general opinions on model control systems, based upon experience, are presented • Dahl, P.F.; Hahn, H. 1980-01-01 The coil configurations of the ISABELLE dipole and quadrupole magnets have been reviewed and a number of improvements were suggested for incorporation into the final design.
The coil designs are basically single layer multiple block approximations to cosine current distributions, wound from a high aspect ratio non-keystoned braided conductor. The blocks are separated by knife-edge wedges to maximize the quench propagation velocity.
The current density variation is obtained by an appropriate distribution of the spacer turns and, to a lesser degree, by the wedge locations. The use of inert turns is necessary to minimize the peak field enhancement both in the ends and in the two dimensional section. Schemes for deriving turns distributions yielding harmonic coefficients satisfying the stringent ISABELLE tolerances on field uniformity, while allowing for simplicity in winding and taking into account quench propagation considerations, will be discussed, as well as our approach to the coil end configuration • Thompson, P.; Bertsche, A.; Fuhrmann, J.; Greene, A.; Grove, E.; Repeta, L.; Short, F.; Tannenbaum, M.; Wanderer, P.
1981-01-01 As a part of the manufacturing processes, several mechanical measurements are made on ISABELLE dipoles. These are done both to control the process and to provide information for the evaluation of the behavior of the completed magnets.
This paper discusses the Young's Modulus (E = 1-3 x 10 6 psi), the thermal contraction of the coil assembly (ΔL/L = 290 +- 17 x 10 -5 at 77 0 K), and the loss of applied prestress with time • Kassner, D. 1977-01-01 It has been proposed to construct an intersecting storage ring accelerator, ISABELLE, at BNL, consisting of two concentric rings of magnets containing counter-rotating beams of charged particles. Each ring contains 216 dipole magnets and 138 quadrupoles. All magnets are superconducting and operate at a temperature of 4.3 K. A description of the design of the cryostats, including the internal supports, heat shield superinsulation system and the vacuum vessel is given.
Panzer corps serial number. Details of fabrication techniques are also included • Burnstein, R.; Carithers, W.C.; Duong-van, M. 1975-01-01 The theoretical background is given for a proposed experiment to detect W mesons using their leptonic decay mode. A lepton detector was designed for use at the planned ISABELLE proton--proton colliding beam storage rings. The general configuration of the detector is shown, and an electron identification module, an electron-hadron calorimeter, methods of muon identification, and an optional central detector (magnetic solenoid spectrometer) are discussed • Month, M. 1977-01-01 An elaboration of the ISABELLE concept as the model for a high energy, high luminosity proton-proton facility is given. Its place in the total high energy physics program is discussed. Certain features of the ISABELLE design which have not been consolidated, in particular injection and modes of beam operation, are considered.