Longitudinal phase space reconstruction for a heavy ion accelerator
| Autor: | Manuel Heilmann, T. Sieber, Simon Lauber, Florian Dziuba, Stepan Yaramyshev, Malte Schwarz, Viktor Gettmann, Anna Rubin, K. Aulenbacher, Maksym Miski-Oglu, Julian List, Christoph Burandt, Thorsten Kürzeder, Peter Forck, Holger Podlech, Winfried Barth |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Physics
Nuclear and High Energy Physics Tomographic reconstruction Physics and Astronomy (miscellaneous) 010308 nuclear & particles physics business.industry Surfaces and Interfaces Tracking (particle physics) 01 natural sciences Linear particle accelerator Optics Phase space Cryomodule 0103 physical sciences Quadrupole Continuous wave Physics::Accelerator Physics lcsh:QC770-798 lcsh:Nuclear and particle physics. Atomic energy. Radioactivity 010306 general physics business Beam (structure) |
| Zdroj: | Physical Review Accelerators and Beams, Vol 23, Iss 11, p 114201 (2020) |
| ISSN: | 2469-9888 |
| Popis: | At the GSI Helmholtzzentrum f\"ur Schwerionenforschung (GSI) in Darmstadt, Germany, a prototype cryomodule (advanced demonstrator) for the superconducting (SC) continuous wave (CW) Helmholtz Linear Accelerator (HELIAC) is under construction. A transport line, comprising quadrupole lenses, rebuncher cavities, beam correctors, and adequate beam instrumentation has been built to deliver the beam from the GSI 1.4 MeV/u High Charge Injector (HLI) to the advanced demonstrator, which offers a test environment for SC CW multigap cavities. In order to achieve proper phase space matching, the beam from the HLI must be characterized in detail. In a dedicated machine experiment the bunch shape has been measured with a nondestructive bunch shape monitor (BSM). Therefore, different bunch projections were obtained by altering the voltage of two rebunchers. These measurements were combined with dedicated beam dynamics simulations using the particle tracking code dynamion. The longitudinal bunch shape and density distribution at the beginning of the matching line are fully characterized by a tomographic reconstruction method based on a non-negative least square minimization approach. |
| Databáze: | OpenAIRE |
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