Bochum 2009 – scientific programme
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HK: Fachverband Hadronen und Kerne
HK 19: Accelerators and Instrumentation II
HK 19.1: Group Report
Monday, March 16, 2009, 16:30–17:00, H-ZO 90
The ISOLDE facility - Recent radioactive ion beam development — •Alexander Herlert — CERN, Geneva, Switzerland
The ISOLDE facility at CERN provides a large variety of radioactive ion beams for the investigation of, e.g., nuclear structure, nuclear ground state properties, solid state physics, and fundamental interactions. The radioactive ion beam development has played a key role in the successful physics program at ISOLDE. Recent target and ion source development comprises tests of new nanostructured target materials for the production of C and Kr beams. In addition, a new plasma FEBIAD ion source was constructed that delivers ion beams with up to ten times higher ionization efficiency for light noble gases, which enabled the first observation of 229Rn. The ISCOOL radiofrequency quadrupole cooler and buncher, which is part of the HIE-ISOLDE upgrade, has been applied throughout the 2008 running period and enhanced significantly the beam quality. For the resonance ionization laser ion source RILIS a new solid state laser system has started operation, which is dedicated to obtain better ion beam stability and higher ionization efficiencies, e.g., as is the case of Ga. Finally, the number of available post-accelerated beams at REX-ISOLDE has been increased, now also including for instance 10C on the low-mass side and 204Rn on the high-mass side. An overview of recent achievements will be presented. The support from the ISOLDE collaboration and the ISOLDE technical group is acknowledged.