The FRS Ion Catcher
| العنوان: | The FRS Ion Catcher |
|---|---|
| المؤلفون: | M. Pfuetzner, M. Diwisch, F. Amjad, H. Geissel, E. Haettner, Helmut Weick, J. Kurcewicz, Sami Rinta-Antila, Moritz P. Reiter, Johannes Lang, S. Pietri, A. Estrade, A. Prochazka, J. Ebert, M. Petrick, C. Nociforo, Timo Dickel, Florian Greiner, Maya Takechi, Ann-Kathrin Rink, M. Ranjan, Nasser Kalantar-Nayestanaki, Peter Dendooven, S. Purushothaman, S. Ayet, Mikhail I. Yavor, Yoshiki Tanaka, Iain Moore, Christoph Scheidenberger, J. S. Winfield, C. Jesch, D. Schaefer, W. R. Plass, I. Mukha, F. Farinon, R. Knoebel |
| المساهمون: | Research unit Medical Physics, Research unit Nuclear & Hadron Physics |
| المصدر: | Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms, 317, 457-462. ELSEVIER SCIENCE BV Nuclear instruments & methods in physics research / B 317, 457-462 (2013). doi:10.1016/j.nimb.2013.07.063 |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Nuclear and High Energy Physics, Physics::Instrumentation and Detectors, Fission, Mass spectrometry, 01 natural sciences, Ion, HEAVY-IONS, Nuclear physics, ENERGY, GSI, 0103 physical sciences, ddc:530, Nuclide, Nuclear Experiment, 010306 general physics, Instrumentation, SUPER-FRS, Direct mass measurement, ta114, 010308 nuclear & particles physics, Chemistry, Projectile, Multiple-reflection time-of-flight mass spectrometer, Extraction time, TIME, Cryogenic gas-filled stopping cell, Quadrupole, ISOBAR-SEPARATION, Facility for Antiproton and Ion Research, Atomic physics, Projectile fragmentation, Beam (structure), Exotic nuclei, SYSTEM |
| الوصف: | At the FRS Ion Catcher at GSI, projectile and fission fragments are produced at relativistic energies, separated in-flight, range-focused, slowed down and thermalized in a cryogenic stopping cell. A multiple-reflection time-of-flight mass spectrometer (MR-TOF-MS) is used to perform direct mass measurements and to provide an isobarically clean beam for further experiments, such as mass-selected decay spectroscopy. A versatile RF quadrupole transport and diagnostics unit guides the ions from the stopping cell to the MR-TOF-MS, provides differential pumping, ion identification and includes reference ion sources. The FRS Ion Catcher serves as a test facility for the Low-Energy Branch of the Super-FRS at the Facility for Antiproton and Ion Research (FAIR), where the cryogenic stopping cell and the MR-TOF-MS will be key devices for the research with stopped projectile and fission fragments that will be performed with the experiments MATS and LaSpec. Off-line tests of the stopping cell yield a combined ion survival and extraction efficiency for Rn-219 ions of about 30% and an extraction time of about 25 ms. The stopping cell and the MR-TOF-MS were commissioned on-line as part of the FRS Ion Catcher. For the first time, a stopping cell for exotic nuclei was operated on-line at cryogenic temperatures. Using a gas density almost two times higher than ever reached before for a stopping cell with RF ion repelling structures, various U-238 projectile fragments were thermalized and extracted with very high efficiency. Direct mass measurements of projectile fragments were performed with the MR-TOF-MS, among them the nuclide Rn-213 with a half-life of 19.5 ms only. (C) 2013 Elsevier B.V. All rights reserved. |
| اللغة: | English |
| تدمد: | 0168-583X |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ceb7eb83bf1ca8ecada7908fbbc18cf9Test https://hdl.handle.net/11370/ec401bcb-d85c-4560-9bb1-b396624714b3Test |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....ceb7eb83bf1ca8ecada7908fbbc18cf9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0168583X |
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