• J.L. Vignet, M. Blaizot, S.C. Cuzon, A. Delannoy, J.-C. Foy, P. Gangnant, E. Gueroult, C. Houarner
  GANIL, Caen

The SPIRAL2 project is based on a multi-beam driver in order to allow both ISOL and low-energy in-flight techniques to produce Radioactive Ion beams (RIB). A superconducting light/heavy-ion LINAC capable of accelerating 5 mA deuterons up to 40 MeV and 1 mA ions up to 14.5 MeV/u is used to bombard both thick and thin targets. These beams could be used for the production of intense RIB by several reaction mechanisms (fusion, fission, transfer, etc.). In order to visualize the SPIRAL2 beam dynamics, several beam profile monitors are under development. Multiwire beam profile monitors (SEM) will be used on the driver and RIB lines, a non interceptive beam profile monitor (RGM) should be mounted on the LINAC diagnostics box and before the experiment facility, and a low intensity beam profile monitor (EFM) on the RIB lines. Signal acquisition from these monitors will be accomplished through new associated electronics which digitize 94 channels in a parallel system. Each channel integrates the current of the associated wire or strip and performs a current-voltage conversion. The dedicated GANIL data display software has been adapted for these new monitors.

• P. Ausset
  IPN, Orsay
• T.A. André, C. Doutresssoulles, B. Ducoudret, C. Jamet, W. Le Coz, F. Lepoittevin, E. Swartvagher, J.L. Vignet
  GANIL, Caen
• C. Maazouzi, C.O. Olivetto, C. Ruescas
  IPHC, Strasbourg Cedex 2

The future SPIRAL2 facility will be composed of a multi-beam driver accelerator (5mA/40Mev deuterons, 5mA/33MeV protons, 1mA/14.5 MeV/u heavy ions) and a dedicated building for the production of radioactive ion beams (RIBs). RIBs will be accelerated by the existing cyclotron CIME for the post acceleration and sent to GANIL’s experimental areas. The injector, constituted by an ion source, a deuterons/protons source, a room temperature RFQ and the MEBT line, will produce and accelerate beams to an energy of 0,75MeV/u. An Intermediate Test Bench (B.T.I.) is being built to commission the SPIRAL2 Injector through the first re-buncher of the MEBT line in a first step and the last re-buncher in a second step. The B.T.I. is designed to perform a wide variety of measurements and functions and to go more deeply in the understanding of the behaviour of diagnostics under high average intensity beams operations. A superconducting LINAC with two types of cavity will allow reaching 20 MeV/u for deuterons beam. This paper describes injector diagnostic developments and gives information about the current progress.

• P. Anger, T.A. André, A. Delannoy, E. Gueroult, B. Jacquot, C. Jamet, G. Ledu, A. Savalle, F. Varenne, J.L. Vignet
  GANIL, Caen
• J.-M. Fontbonne, N. Orr
  LPC, Caen

The SPIRAL2 project is based on a multi-beam driver facility in order to allow both ISOL and low-energy in-flight techniques to produce intense radioactive ion beams (RIB) in a new Facility. A superconducting linac capable of accelerating 5-mA deuterons up to 40 MeV is used to bombard both thick and thin targets. These primary beams will be used for the RIB production by several reaction mechanisms (fusion, fission, etc.) The production of high intensity RIB will be based on fission of uranium target induced by neutrons. These exotic particles will be produced, ionized, selected in a dedicated production building and transported to the existing CIME cyclotron for post acceleration. After this, they will be used in the present experimental area of GANIL. The construction phase of SPIRAL2 was officially started in 2005. The beam diagnostics for the production facility allow a pre-tuning with a stable beam followed by an extrapolation to the radioactive beam. Some diagnostic devices may also provide for equipment protections and for the safety systems. An overview is presented of the diagnostics which will allow tuning and control of the RIB in this new production facility.