ACC Area

 2019-05-2316:09 [GSI-2019-00653] Journal Article Vockert, M. ; Weber, G. ; Bräuning, H. ; et al Radiative electron capture as a tunable source of highly linearly polarized x rays The radiative electron capture (REC) into the K shell of bare Xe ions colliding with a hydrogen gas target has been investigated. In this study, the degree of linear polarization of the K-REC radiation was measured and compared with rigorous relativistic calculations as well as with the previous results recorded for U92+. [...] OpenAccess: PDF; 2019-05-2315:01 [GSI-2019-00645] Journal Article Hannen, V. ; Vollbrecht, J. ; Andelkovic, Z. ; et al Lifetimes and g -factors of the HFS states in H-like and Li-like bismuth The LIBELLE experiment performed at the experimental storage ring at the GSI Helmholtz Center for Heavy Ion Research in Darmstadt, Germany, has successfully determined the ground state hyperfine (HFS) splittings in hydrogen-like (${}^{209}{\mathrm{Bi}}^{82+}$) and lithium-like (${}^{209}{\mathrm{Bi}}^{80+}$) bismuth. The study of HFS transitions in highly charged ions enables precision tests of QED in extreme electric and magnetic fields otherwise not attainable in laboratory experiments. [...] OpenAccess: PDF; 2018-12-1816:03 2018-08-0213:53 [GSI-2018-00847] Journal Article Chen, R. J. ; Yan, X. L. ; Ge, W. W. ; et al A method to measure the transition energy γ t of the isochronously tuned storage ring 2018-06-0814:37 [GSI-2018-00730] Dissertation / PhD Thesis Scharrer, P. Charge state distributions of low-energy heavy ions passing through dilute gases 156 pp. (2017) = Dissertation, Johannes-Gutenberg-Universität Mainz, 2017 2018-05-2020:18 [GSI-2018-00649] Dissertation / PhD Thesis Bai, J. ; Kester, O. Development of the timing system for the Bunch-to-Bucket transfer between the FAIR accelerators Frankfurt am Main : Universitätsbibliothek Johann Christian Senckenberg 174 p. (2017) = Dissertation, JWGU Frankfurt, 2017 The FAIR project is aiming at providing high-energy beams of ions of all elements from hydrogen to uranium, antiprotons and rare isotopes with high intensities. The existing accelerator facility of GSI and the future FAIR facility employ a variety of circular accelerators like heavy ion synchrotrons (SIS18 and SIS100) and storage rings (ESR, CRYRING, CR and HESR) for the preparation of secondary beams and experiments. [...] 2018-05-2019:45 [GSI-2018-00644] Dissertation / PhD Thesis Katrik, P. Activation analysis of heavy ion accelerator constructing materials and validation of beam-loss criteria. Unpublished 153 p. (2017) [10.13140/RG.2.2.20430.97605] = Dissertation, TU Darmstadt, 2017 Activation of high-intensity heavy-ion accelerators due to beam losses is a serious issue for accelerator parts like collimators, magnets, beam-lines, fragment separator components, etc. The quantification of the induced activity and the prediction of the radiation levels in an accelerator and its environment may have a positive impact on the decreasing of radiation hazards during “hands on” maintenance as well as on the optimisation of the machine operation. [...] 2018-02-1612:48 [GSI-2018-00385] Contribution to a conference proceedings/Contribution to a book Yaramyshev, S. ; Aulenbacher, K. ; Barth, W. ; et al Beam Dynamics Study for the HIM&GSI Heavy Ion SC CW-LINAC Proceedings of the 8th International Particle Accelerator Conference8th International Particle Accelerator Conference, CopenhagenCopenhagen, Denmark, 14 May 2017 - 19 May 2017 JACoW, Geneva, Switzerland 2217 pp. (2017) [10.18429/JACoW-IPAC2017-TUPVA061] A sc cw-linac with variable output energy from 3.7 to 7.5 MeV/u for ions with mass to charge ratio of A/Z<6 is recently under development at HIM and GSI. Following the results of the latest RF-tests with the newly constructed sc CH-DTL cavity, even heavier ions up to Uranium 28+ could be potentially accelerated with the already reached higher RF-voltage. [...] OpenAccess: PDF PDF (PDFA); 2018-02-1612:44 [GSI-2018-00384] Contribution to a conference proceedings/Contribution to a book Barth, W. ; Aulenbacher, K. ; Basten, M. ; et al Further Investigations for a Superconducting cw-LINAC at GSI Proceedings of the 8th International Particle Accelerator Conference8th International Particle Accelerator Conference, CopenhagenCopenhagen, Denmark, 14 May 2017 - 19 May 2017 JACoW, Geneva, Switzerland 2197 pp. (2017) [10.18429/JACoW-IPAC2017-TUPVA055] For superconducting (sc) accelerator sections operating at low and medium beam energies very compact accelerating-focusing structures are strongly required, as well as short focusing periods, high accelerating gradients and very short drift spaces. The Facility for Antiproton and Ion Research (FAIR) is going to use heavy ion beams with extremely high peak current from UNiversal Linear ACcelerator (UNILAC) and the synchrotron SIS18 as an injector for the SIS100. [...] OpenAccess: PDF PDF (PDFA); 2018-02-1612:39 [GSI-2018-00383] Contribution to a conference proceedings/Contribution to a book Polozov, S. ; Barth, W. ; Kulevoy, T. ; et al Beam Dynamics Study and Electrodynamics Simulations for the CW RFQ Proceedings of the 8th International Particle Accelerator Conference 8th International Particle Accelerator Conference, IPAC2017, CopenhagenCopenhagen, Denmark, 14 May 2017 - 19 May 2017 JACoW, Geneva, Switzerland 1333 pp. (2017) [10.18429/JACoW-IPAC2017-TUPAB013] A compact university scale CW research proton accelerator, as well as driver linac with three branches of experimental beam lines, delivering beam energy of 3, 30 and 100 MeV for experiments, are recently under development in Russia. First results of the beam dynamics simulations for such a linac were already shown in *. [...] OpenAccess: PDF PDF (PDFA);