An RFQ cooler and buncher for the TRIGA-SPEC experiment
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A linear Paul trap for cooling of ion beams, the former cooler for emittance elimination radiofrequency quadrupole (RFQ) at MISTRAL/ISOLDE, has been installed and commissioned at the TRIGA-SPEC experiment located at the research reactor TRIGA Mainz. It is connected to a hot-surface-ionization ion source and a subsequent mass separator for ionization and pre-separation of neutron-rich fission products as delivered from the reactor. The capability of accumulating and bunching ion beams has been implemented to provide low-emittance ion pulses of 250 ns width containing up to 106 ions. A technical description of the upgraded RFQ as well as its characterization with stable ions is presented. Its installation allows delivery of low-emittance ion bunches to the two branches of the TRIGA-SPEC experiment, namely TRIGA-TRAP and TRIGA-LASER.
KeywordsPaul Trap Collinear Laser Spectroscopy Linear Paul Trap Radiofrequency Quadrupole Bunch Width
We would like to thank Dr. D. Lunney for the transfer of COLETTE to Mainz and sharing his expertise in the field of Paul traps. M. E. acknowledges support by the BMBF under contract 05P09 UMFN5, N. F. is a recipient of the fellowship through GRK Symmetry Breaking (DFG/GRK 1581), and S. N. acknowledges support by the Alliance Program of the Helmholtz Association (HA216/EMMI). This work has been supported by the Max Planck Society, the BMBF under contract 05P12 UMFN8, and the PRISMA Cluster of Excellence.
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