Köln 2004 – scientific programme

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HK: Physik der Hadronen und Kerne

HK 25: Instrumentation and Applications III

HK 25.3: Talk

Wednesday, March 10, 2004, 11:30–11:45, C

The REX-ISOLDE energy upgrade — •O. Kester, D. Habs, H. Bongers, T. Sieber, K. Rudolph, and M. Pasini — Sektion Physik der LMU München, Am Coulombwall 1, D-85748 Garching

In 2002 the REX-ISOLDE LINAC served radioactive ion beams for a bunch of experiment. The LINAC delivered beams with energies of 0.3, 2 and 2.2 MeV/u to the two target stations. Due to the charge state breeder very different mass regions of the nuclear chart could be addressed. In order to perform Coulomb excitation and particle transfer experiments in the mass region up to A = 150, an energy upgrade of the LINAC is required, which is foreseen in several steps. A new cavity for the first upgrade step to 3.1 MeV/u has been installed, which employs one of the MAFF 202.56 MHz IH-7gap-cavity. The second step to energies above to 4 MeV/u will be a mayor change of the LINAC structure. There two 7-gap spiral resonators of REX-ISOLDE will be exchanged by a 202 MHz IH-cavity. Design calculations, cavity design and first measurements with the IH-9gap-cavity will be presented.