• 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.

• C. Jamet, T.A. André, C. Doutresssoulles, W. Le Coz, E. Swartvagher
  GANIL, Caen

The SPIRAL2 project is composed of an accelerator and a radioactive beam section. Radioactive ions beams (RIBs) will be accelerated by the current cyclotron CIME and sent to GANIL experimental areas. The accelerator, with a RFQ and a superconducting Linac, will accelerate 5 mA deuterons up to 40MeV and 1 mA heavy ions up to 14.5 MeV/u. A new electronic device has been evaluated at GANIL to measure phase and amplitude of pick-up signals. The principle consists of directly digitizing pulses by under-sampling. Phase and amplitude of different harmonics are then calculated with a FPGA by an I/Q method. Tests and first results of a prototype are shown and presented as well as future evolutions.