Conference paper

Publication year: 2008

Pages: 4493-4497

Journal: Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms

Volume number: 266

Issue number: 19-20

ISSN: 0168-583X

eISSN: 1872-9584

Open access status: Green

DOI Link: https://doi.org/10.1016/j.nimb.2008.07.007

Conference: 15th International Conference on Electromagnetic Isotope Separators and Techniques Related to their Applications

Publisher: Elsevier

Abstract: 
At the FRS Ion Catcher at GSI, relativistic exotic ions produced by projectile fragmentation/fission are range-focused, slowed down and thermalised in a gas-filled stopping cell, extracted and made available to high-precision experiments with ions almost at rest. It is a prototype for a gas cell system at the Low-Energy Branch of the Super-FRS at FAIR. In an online experiment, the FRS Ion Catcher was commissioned successfully with relativistic nickel fragments. The overall efficiency of the system was measured as (1.8 +/- 0.3)% and can be divided into a stopping efficiency of (5.0 +/- 1.1)% and an extraction and transport efficiency of (35.8 +/- 9.4)%. The overall efficiency is hence limited mostly by the stopping efficiency, Which could be increased in the future by operating at higher gas cell pressures. From extraction time measurements of polyatomic ions formed in the gas cell extraction times of atomic ions of 20-50 ms can be derived. The potential of the system was illustrated by the half-life measurement of (CO)-C-54 with a short half-life of 193 ms only. (c) 2008 Elsevier B.V. All rights reserved.

Harvard Citation style: Petrick, M., Plalss, W., Behr, K., Bruenle, A., Caceres, L., Clark, J., et al. (2008) Online test of the FRS Ion Catcher at GSI, Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 266(19-20), pp. 4493-4497. https://doi.org/10.1016/j.nimb.2008.07.007

APA Citation style: Petrick, M., Plalss, W., Behr, K., Bruenle, A., Caceres, L., Clark, J., Di, Z., Elisseev, S., Facina, M., Fettouhi, A., Geissel, H., Hueller, W., Huyse, M., Karagiannis, C., Kindler, B., Knoebel, R., Kudryavtsev, Y., Kurcewicz, J., Levant, T., ...Zabransky, B. (2008). Online test of the FRS Ion Catcher at GSI. Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 266(19-20), 4493-4497. https://doi.org/10.1016/j.nimb.2008.07.007