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Dresden 2000 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 7: Instrumentation und Anwendungen II

HK 7.2: Group Report

Monday, March 20, 2000, 17:00–17:30, B 118

Status of REX-ISOLDE* and new developments for MAFF — •O. Kester, D. Habs, T. Sieber, M. Gross, P. Thirolf, P. Reiter, O. Engels, G. Bollen, H. Bongers, and S. Emhofer — Sektion Physik der LMU München, Am Coulombwall 1, D-85748 Garching

In order to perform experiments with exotic nuclei at the Coulomb barrier efficient post acceleration of radioactive ions in short LINACs up to 6 MeV/u is required. The REX-ISOLDE experiment is the first accelerator of radioactive isotopes, which takes advantage of charge breeding of the rare isotopes by an high charge state ion source like the electron beam ion source (EBIS). With higher charge states the accelerating fields of the following accelerator can be used more efficiently, which results in a rather short LINAC. For the first experiments a rather low energy of 0.8-2.2 MeV/u has been chosen in order to proof the concept and to carry out very interesting experiments with light nuclei. An upgrade for higher energies has been designed, where the key structure is the interdigital H-type structure (IH-structure). With only four additional cavities beams of ions with an A/q<6.3 in an energy range between 3.7 and 6 MeV/u could be reached.

These IH-cavities could be used as well for a LINAC of the Munich accelerator for fission fragments (MAFF). The status of REX-ISOLDE, which will become operational in mid of 2000 and of MAFF will be presented.

*supported by the BMBF under contract no. 06LM868I(4)

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