[en] In this rectangular shutter, which can contain a vacuum, the pre-shutter and the shutter plates are cooled. The circular case for holding the shutter part of the heavy ion accelerator has a circular intermediate flange ring in its centre as a hub, which is fixed by fins to the case. The fins and intermediate flange ring are made hollow, where the hollow spaces are connected together and have cooling water flowing through them. (DG)

No abstract available

[en] Several new or upgraded versions of heavy ion accelerators have recently come into service. A review is made of these machines and tentative conclusions are drawn on the merits of the various types

[en] S.A.R.A (systeme Accelerateur Rhone-Alpes) the two stages accelerator built at Institut des Sciences Nucleaires-Grenoble, is described. It is made of a K = 90 compact cyclotron running since 1968 and a new four separated sectors cyclotron with K = 160. On March 24th, 1982, a 80 nA beam of ¹²C⁺⁶ has been obtained inside the post-accelerator until the extraction radius

[en] This paper briefly reviews the technical history of superconducting ion-accelerating structures. Various superconducting cavities currently used and being developed for use in ion linacs are discussed. Principal parameters and operational characteristics of superconducting structures in active use at various heavy-ion facilities are described

[en] Lawrence Berkeley Laboratory (LBL) and Lawrence Livermore National Laboratory (LLNL) propose to build at LBL the Induction Linac Systems Experiments (ILSE), the next logical step towards the eventual goal of a heavy-ion induction accelerator powerful enough to implode or open-quotes driveclose quotes inertial-confinement fusion targets. ILSE is a 10 MeV heavy ion accelerator system that will establish the beam dynamics understanding required for a heavy ion IFE driver. Space charge dominated beams with driver scale dimensions will be employed. ILSE, although much smaller than a driver, will be the first experiment at full driver scale in several important parameters. Most notable among these are line charge density and beam cross section. Nearly all accelerator components and beam manipulations needed for an inertial fusion energy (IFE) driver will be tested. The ILSE accelerator and research program will permit experimental study of those beam manipulations required of an induction linac inertial fusion driver that have not been tested sufficiently in previous experiments. ILSE is also an important step in driver technology development for heavy ion drivers

[en] In this paper we discuss the properties of gas cell targets used for the production of radioactive beams via the in-flight technique as well as gas cell targets used for studies of nuclear reactions in inverse kinematics at the ATLAS heavy ion accelerator.

[en] The problem of phase and amplitude stabilization of the fields in superconducting resonators is described. The problem arises from the fast (approx. 50 Hz) resonator eigenfrequency modulation of magnitude (approx. 100 Hz) which is much larger than the resonator bandwidth (approx. 10 Hz). The problem is compounded by the fact that the coupling between the electrical and mechanical modes of the resonator can lead to instabilities (ponderomotive instabilities). The solution suggested involves operating the resonators in self-excited loops, and electronically modifying the loop parameters in order to lock the loop oscillations to an external phase and amplitude reference without attempt to modify the instantaneous resonator eigenfrequency. It is found that this method of phase stabilization is well suited to resonators with small energy contents and small eigenfrequency deviations since the power required is equal to their product; this occurs when the loaded bandwidth of the resonator is twice the maximum eigenfrequency deviation to be compensated for. It is also found that when the loop is free-running, the field amplitude is stable and no ponderomotive instabilities are present as long as the non-ideal effects are limited. When the loop is locked to an external phase and amplitude reference, ponderomotive instabilities can occur; however, the loop can be made stable by adjustment of the loop phase shift, and the stable range can be increased by using high amplitude and phase feedback gains. It is also found that under certain feedback conditions, the error on the particle energy gain can be made to vanish, although residual phase and amplitude errors are still present. A microprocessor-controlled feedback system based on this analysis is then described and results of experiments performed in conjunction with a 150 MHz lead (Pb) plated superconducting split-ring resonator are presented. The experiments show excellent agreement with the analysis

[en] The renewal SATURNE project started in 1974. SATURNE I desassembling began in may 1977 and in july 1978 with the new ring, we just get more that ten to the eleventh particules in the very first hour of starting. The main parameters of SATURNE II was presented at the IX⁰ International Conference on High Energy Accelerator at Stanford in may 1974 (Proceedings p. 615). SATURNE II is a strong focusing synchrotron and the injected particules fill the synchrotron space with very few betatron oscillation. So a small emittance external beam should be obtained, which is very important for experimental nuclear physics. The realization main difficulties will be mentionned. The results obtained with the first days beam will be presented. We will described the forecasted characteristics of the accelerator and the experimental areas to be reached in 1979

No abstract available