ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The REXEBIS is an electron-beam ion source for charge breeding of radioactive isotopes. Together with a Penning trap it constitutes a unique system for beam preparation for consecutive post-acceleration to a few MeV/u in the REX-ISOLDE linac. The Penning trap accumulates, cools, and bunches the 60 keV semicontinuous 1+radioactive beam from the on-line mass separator ISOLDE at CERN. Thereafter, the beam is injected into the EBIS for charge breeding to a charge-to-mass ratio of ∼1/4 within less than 20 ms (in a first phase for ion masses A〈50). After extraction and mass analysis in a Nier-type spectrometer, the ions are injected into a radio-frequency quadrupole, the first stage of the 2.2 MeV/u linac. The Penning trap/EBIS unit will provide an efficient and rapid beam preparation, capable of handling low ion intensities with half-lives down to some 10 ms. The REXEBIS has now been completed and the commissioning is in progress. We will report on the results from the electron-beam tests, the emittance measurements, and the injection and extraction tests of stable ions. Furthermore, the vacuum experience of the room-temperature inner structure is presented. © 2002 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1427035
