Author: Osswald, F.R.
Paper Title Page
MOPEA010 Transfer of RIB’s between ISOL Target and Experiment Hall at SPIRAL 2 85
  • F.R. Osswald, T. Adam, E. Bouquerel, D. Boutin, A. Dinkov, M. Rousseau, A. Sellam
    IPHC, Strasbourg Cedex 2, France
  • N.Yu. Kazarinov
    JINR, Dubna, Moscow Region, Russia
  • H. Weick, M. Winkler
    GSI, Darmstadt, Germany
  Funding: The authors would like to acknowledge the German-French and Russian-French agreements enabling the allocation of resources : IN2P3 - GSI (id. 12-69), and IN2P3 - JINR (id. 11-88) collaborations.
The production of intense radioactive beams requires a high power target, an efficient beam selection and transport, safe operations and a reliable-cost effective facility. The SPIRAL 2 project a so called second generation RIB facility is under construction at GANIL. The low energy RIB’s will be produced by neutron induced fissions obtained from a 40 MeV primary beam (deutons) and a graphit convertor. Several issues must be addressed in order to insure the safety rules and ultimately the performances requested by the scientific programme. Among them, the space charge dominated regime during the extraction of the beam after the target and the ion source, the compromise between beam transmission, rejection of the light-ion beam, and management of the main safety features. Most of the investigations currently in progress are devoted to the nuclear engineering, the maintenance and the multi-scale integration of the segmented beam line with the infrastructure.
* RIB dynamics of the SPIRAL 2 Transfer Line, HIAT 2012
** Simulation of Hollow Beam formation at SPIRAL 2, IPAC 2011
*** A Secondary Radioactive Beam Line Section for SPIRAL 2, HIAT 2009
TUPWO004 Preliminary Design of a 4 MW Proton Beam Switchyard for a Neutrino Super Beam Production Facility 1880
  • E. Bouquerel, M. Dracos, F.R. Osswald
    IPHC, Strasbourg Cedex 2, France
  Funding: European Commission Framework Programme 7 Design Study: EUROnu, Project Number 212372.
The feasibility of the distribution of 4 MW proton beam power onto a 4-targets horn system for neutrino super-beams production is discussed. A preliminary solution using a pair of bipolar kickers to route the beam onto the targets at a repetition rate of 50 Hz (12.5 Hz per beam line) is proposed. Compensating dipoles would apply symmetry in the system. Magnetic fields induced by these optical elements would not exceed 0.96 T. Studies of the beam envelopes with the code TRANSPORT suggest the use of three quadrupoles per beam line located after the dipoles to focus the 4 mm σ beam onto each target. The length of this switchyard system is estimated to be 29.9 m and 3 m radius.