INFN/LNL, Legnaro
Padova University/Dept. Mech. Eng., Padova
Padova University/Dept. Chem., Padova
Pavia University/Dept. Chem., Pavia
Trento University/Dept. Mech. Eng., Trento
INFN/BO, Bologna
SPES is a facility to be built at National Institute of Nuclear Physics (INFN laboratory, Legnaro, Italy) intended to provide intense neutron-rich Radioactive Ion Beams (RIBs) directly hitting a UCx target with a proton beam of 40 MeV and 0.2 mA; RIBs will be produced according to the ISOL technique and the new idea that characterize the SPES project is the design of the production target: we propose a target configuration capable to keep high the number of fissions, low the power deposition and fast the release of the produced isotopes. In this work we will present the recent results on the R&D activities regarding the multi-foil direct UCx target.
GSI, Darmstadt
TU Darmstadt, Darmstadt
Funding: Work supported by EURATOM (IFE KiT Program).
The recent development in laser acceleration of protons and ions has stimulated ideas for using this concept as innovative and compact therapy accelerator. While currently achieved parameters do not allow a realistic conceptual study yet we find that our simulation studies on ion collimation and transport, based on output data from the PHELIX experiment, already give a useful guidance. Of particular importance are the chromatic and geometric aberrations of the first collimator as interface between the production target and a conventional accelerator structure. We show that the resulting 6D phase space matches well with the requirements for synchrotron injection.
Kyoto University/ICR, Kyoto
JINR, Dubna
NIRS, Chiba-shi
Kyoto University/IAE, Kyoto
MPI-K, Heidelberg
Funding: The present work was supported by Advanced Compact Accelerator Development program by MEXT of Japanese Government. Support from Global COE, The Next Generation of Physics, is also greatly appreciated.
Laser cooling for bunched Mg ion beam with the kinetic energy of 40 keV has been applied with S-LSR at ICR, Kyoto University. Up to now, clear peaking of equilibrium momentum spread after laser cooling has been observed at such a synchrotron tune as resonates with the horizontal betatron tune, which is considered to be due to heat transfer from the horizontal degree of freedom to the longitudinal one. In order to demonstrate transverse cooling by observation of reduction of the horizontal beam size, spontaneous emission from laser induced excited state of the Mg ion, has been observed with the use of CCD camera. Some reduction of horizontal beam size has been observed with a certain synchrotron tune, a little bit smaller compared with the fractional part of the horizontal tune.