[en] The Isolde facility has been one of the main clients for beam time at the CERN synchrocyclotron since 1967. It was decided in 1983 to expand the capability of Isolde by the addition of a second primary proton target station and a second on-line isotope separator. At the same time it was decided to run the SC almost exclusively for Isolde in the future. The new separator has two stages of separation and has been designed so as to fit into existing buildings in order to keep the cost to a minimum. At present the separator is being installed, and we expect first beam towards the end of 1986. (author)

[en] The CERN synchrocylotron (K = 800) is currently enjoying a phase of intense exploitation following the rather slow build-up after the reconstruction programme of 1974-1975. After a great deal of rebuilding and improvements the rotating condensers are both now able to operate at full repetition rate with a dee voltage of 20 kV, producing an internal beam of more than 7 μA of 600 MeV protons, of which up to 5 μA has been extracted. Recently, an interest in particles other than protons has developed, and it was found that certain ions could be accelerated by making relatively minor modifications to the machine. ₃He₂⁺ ions of 303 MeV/N have been used since 1978 and there have been several runs with ₃He⁺, ₁₂C₄⁺ and ₁₅N₅⁺ ions since then. These ions have an energy of 86 MeV/N and are produced at very high intensities. Construction work is under way on a modification to the RF system to enable the acceleration of other ions, for example ₂₀Ne₆⁺ and ₂₀Ne₅⁺, for which ion source tests have already given encouraging results

[en] Isolde is known throughout the world as the on-line isotope separator at the 600 MeV synchrocyclotron at CERN, Geneva. Work has been going on there since 1967 on many topics including nuclear physics, solid state, atomic physics, etc. There have been great improvements made over the years but it became clear that the physics output could only be increased if there were to be an expansion of the facility. It was decided to build a second on-line separator to be used alternately with the existing Isolde, thus doubling the potential. The new separator is under construction, called Isolde 3, and is scheduled for first operation near year

[en] It was decided in 1983 to expand the CERN ISOLDE facility by the addition of a second primary proton target station, together with a second on-line isotope separator and experimental zone, thereby reserving the CERN synchro-cyclotron almost exclusively for ISOLDE for the future. The main requirements of the new separator were that it should feed a new experimental hall without the constraints of the existing underground zone; that the switchover between the ''old'' and ''new'' ISOLDE be rapid; that the possibility of high resolution be incorporated; that the use of existing sources, as well as high current ion sources be possible; and that the overall cost be kept low. Of these constraints, the last one wa mainly responsible for the way the new separator ISOLDE 3 now looks. Progress has been good, and the separator is being installed

[en] Although it had been designed as a 600 MeV proton accelerator, the CERN synchrocyclotron was modified at the end of the 1970's to be able to accelerate ions up to mass 20. A programme of physics at ∼ 100 MeV/N developed rapidly, at a time when most of today's custom-built heavy ion accelerators for more than 20 MeV/N were under construction or still on the drawing board. The intention was to enable physicists to perform some immediate experiments and then later to phase out this mode of operation as other machines came on-line. Thus the SC's ion programme was brought to a close at the beginning of 1986. (author)

[en] It was decided in 1983 to expand the CERN ISOLDE facility by the addition of a second primary proton target station, together with a second on-line isotope separator and experimental zone, thereby reserving the CERN synchro-cyclotron almost exclusively for ISOLDE for the future. The main requirements of the new separator were that it should feed a new experimental hall without the constraints of the existing underground zone; that the switchover between the 'old' and 'new' ISOLDE be rapid; that the possibility of high resolution be incorporated; that the use of existing sources, as well as high current ion sources be possible; and that the overall cost be kept low. Of these constraints, the last one was mainly responsible for the way the new separator ISOLDE 3 now looks. Progress has been good, and the separator is being installed at the time of this Conference. (orig.)

[en] The CERN 600 MeV synchrocyclotron was reconstructed during 1973/74 by introducing a hooded arc ion-source, a rotary condenser designed to raise the Dee-voltage and pulse repetition rate and an extraction channel using a current-bearing septum. The rebuilt accelerator has been in operation since January 1975. Beam characteristics and recent performance data are presented and results of the acceleration of ³He⁺⁺ are briefly described

[en] Following a period of intense exploitation by many users after the completion of the improvement programme in 1974 the CERN SC machine is now principally reserved for the Isolde programme. The heavy ion programme has been completed with acceleration of particles with charge/mass ratio from 1/3 to 1/4

No abstract available

No abstract available