Upgrades and maintenance of the CRYRING@ESR electron cooler for improved internal electron target operation
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arXiv
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| Main Authors: | , , , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909712542334976 |
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| author | Koutsostathis, Athanasios Krantz, Claude Hanu, Elena-Oana Herfurth, Frank Heß, Regina Kaufmann, Wolfgang Lestinsky, Michael Looshorn, Mirko Dieter Menz, Esther Babette Reiter, Andreas Roßbach, Jon Schippers, Stefan Suherman, Phe Man |
| author_facet | Koutsostathis, Athanasios Krantz, Claude Hanu, Elena-Oana Herfurth, Frank Heß, Regina Kaufmann, Wolfgang Lestinsky, Michael Looshorn, Mirko Dieter Menz, Esther Babette Reiter, Andreas Roßbach, Jon Schippers, Stefan Suherman, Phe Man |
| contents | The electron cooler of the CRYRING@ESR storage ring at the GSI-FAIR accelerator complex is a unique instrument, which not only provides beam cooling of the stored ions, but also serves as a low-energy electron target for Dielectronic Recombination experiments. The minimisation of vacuum contamination and the response to rapid energy changes are key requirements of the cooler in electron target mode. Therefore, a test bench was prepared to study the outgassing behaviour of the electron gun components and a setup was constructed to evaluate the drift-electrode-modulation of the acceleration voltage of the cooler. The vacuum studies showed that the electron gun cathode was severely malfunctioning and resulted in its replacement. The drift-electrode-modulation of the acceleration voltage showed significant improvements compared to direct modulation of the terminal voltage of the cooler. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_14690 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Upgrades and maintenance of the CRYRING@ESR electron cooler for improved internal electron target operation Koutsostathis, Athanasios Krantz, Claude Hanu, Elena-Oana Herfurth, Frank Heß, Regina Kaufmann, Wolfgang Lestinsky, Michael Looshorn, Mirko Dieter Menz, Esther Babette Reiter, Andreas Roßbach, Jon Schippers, Stefan Suherman, Phe Man Accelerator Physics Nuclear Experiment Atomic Physics Instrumentation and Detectors The electron cooler of the CRYRING@ESR storage ring at the GSI-FAIR accelerator complex is a unique instrument, which not only provides beam cooling of the stored ions, but also serves as a low-energy electron target for Dielectronic Recombination experiments. The minimisation of vacuum contamination and the response to rapid energy changes are key requirements of the cooler in electron target mode. Therefore, a test bench was prepared to study the outgassing behaviour of the electron gun components and a setup was constructed to evaluate the drift-electrode-modulation of the acceleration voltage of the cooler. The vacuum studies showed that the electron gun cathode was severely malfunctioning and resulted in its replacement. The drift-electrode-modulation of the acceleration voltage showed significant improvements compared to direct modulation of the terminal voltage of the cooler. |
| title | Upgrades and maintenance of the CRYRING@ESR electron cooler for improved internal electron target operation |
| topic | Accelerator Physics Nuclear Experiment Atomic Physics Instrumentation and Detectors |
| url | https://arxiv.org/abs/2501.14690 |