NDLI: CARIBU: a new facility for the study of neutron-rich isotopes

Content Provider	Springer Nature Link
Author	Savard, G. Pardo, R. C. Baker, S. Davids, C. N. Levand, A. Peterson, D. Phillips, D. G. Sun, T. Vondrasek, R. Zabransky, B. J. Zinkann, G. P.
Copyright Year	2011
Abstract	The Californium Rare Ion Breeder Upgrade (CARIBU) to the ATLAS superconducting linac facility is currently being commissioned. It provides low-energy and re-accelerated beams of neutron-rich isotopes obtained from 252Cf fission. The fission products from a 252Cf source are stopped in a large high-intensity gas catcher, thermalized and extracted through an RFQ cooler, accelerated to 50 kV and mass separated in a high-resolution separator before being sent to either an ECR charge breeder for post-acceleration through the ATLAS linac or to a low-energy experimental area. This approach gives access to beams of very neutron-rich isotopes, many of which have not been available at low or Coulomb barrier energies previously. These beams provide unique opportunities for measurements along the r-process path. To take advantage of these unique possibility, the reaccelerated beams from CARIBU will be made available at the experimental stations of ATLAS to serve equipment such as Gammasphere, HELIOS and the reaction spectrometers. In addition, the Canadian Penning Trap (CPT) mass spectrometer has been moved to the CARIBU low-energy experimental area and a new injection line has been built. The new injection line consists of a RFQ buncher sitting on a 50 kV high-voltage platform that will accumulate the mass separated 50 kV radioactive beams, cool and extract them as a pulsed beam of 3 keV. This beam can be sent either to a tape station for diagnostics and tuning, or a cryogenic linear trap for preparation before transfer to the high-precision Penning trap where the mass measurements will take place. Initial CARIBU commissioning is proceeding with a 2 mCi source that will be replaced by a 100 mCi source as the commissioning proceeds. Final operation will use a 1 Ci source and attain yield in excess of 107 ions/sec for the most intense beams at low energy, an order of magnitude less for reaccelerated beams.
Starting Page	301
Ending Page	309
Page Count	9
File Format	PDF
ISSN	03043843
Journal	Hyperfine Interactions
Volume Number	199
Issue Number	1-3
e-ISSN	15729540
Language	English
Publisher	Springer Netherlands
Publisher Date	2011-05-03
Publisher Place	Dordrecht
Access Restriction	Subscribed
Subject Keyword	Gas catcher Neutron-rich isotopes Californium fission Atomic, Molecular, Optical and Plasma Physics Nuclear Physics, Heavy Ions, Hadrons Surfaces and Interfaces, Thin Films Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Atomic and Molecular Physics, and Optics Physical and Theoretical Chemistry Condensed Matter Physics

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