A cooler-buncher for the N=126 factory at Argonne National Laboratory

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:463

Article; Proceedings Paper

Valverde, A. A.^1,2  Brodeur, M.¹  Clark, J. A.^2,3  Lascar, D.^2,4  Savard, G.^2,5 

[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

[2] Argonne Natl Lab, Phys Div, 9700 S Cass Ave, Lemont, IL 60439 USA

[3] Univ Manitoba, Dept Phys & Astron, Winnipeg, MB R3T 2N2, Canada

[4] Northwestern Univ, Ctr Fundamental Phys, Evanston, IL 60208 USA

[5] Univ Chicago, Dept Phys, Chicago, IL 60637 USA

关键词: Radiofrequency quadrupole;    Beam transport;    Radioactive ion beams;    Beam cooling;   

DOI  :  10.1016/j.nimb.2019.04.070

来源: Elsevier

【 摘 要 】

The N = 126 factory currently under construction at Argonne National Laboratory's ATLAS facility will make use of multi-nucleon transfer reactions to produce nuclei around the N = 126 shell closure that are of interest for the study of the rapid neutron capture process and are not available in sufficient quantities using common particle-fragmentation, target-fragmentation, or fission production techniques. As part of this facility, a radio frequency quadrupole (RFQ) buncher will cool and accumulate the beam, converting a high-emittance, continuous beam into a low-emittance bunched beam suitable for trapping. Here, the construction of the RFQ cooler-buncher, based on the design used at the National Superconducting Cyclotron Laboratory's BECOLA and EBIT cooler-bunchers, will be discussed. This design features injection optics optimized to maximize acceptance, separated cooling and bunching regions, and a simplified RFQ electrode construction.

【 授权许可】

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