TUM13
FZJ, Jülich, Germany
BINP SB RAS, Novosibirsk, Russia
Nihon University, Narashino, Chiba, Japan
FZJ, Jülich, Germany
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TUM13 |
Electron Cooling at COSY - Status and Perspectives | |
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| COSY, a COoler SYnchrotron and storage ring has been initially equipped with a low energy electron cooler. It was mainly used to improve the quality of the beams extracted to fixed-target experiments, to enable transverse stacking of polarized beams to be used with targets in the ring, and to improve the beam lifetime for internal experiments. In 2013 a high-energy e cooler covering the entire energy range of COSY was added. Since then high-energy e cooling has been demonstrated and dedicated cooling beam studies with dc and bunched proton beam have been carried out. Furthermore, the cooling process in presence of an internal cluster jet target continuously affecting the circulating beam was studied. We review the status of electron-cooling activities at COSY, present the latest experimental results, discuss problems encountered and possible cures, and provide insights into the activities envisaged for the next year. | ||
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Slides TUM13 [5.526 MB] | |
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| TUM22 | Model Development for the Automated Setup of the 2 MeV Electron Cooler Transport Channel | 28 |
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| The 2 MeV electron cooler allows for cooling the proton and deuteron beams in the entire energy range of COSY and thereby study magnetized high energy electron cooling for the HESR and NICA. Manual electron beam adjustment in the high energy, high current regime proves a cumbersome and time consuming task. Special difficulties are presented by the particular geometry of the e-beam transport channel, limited beam diagnostics and general technical limitations. A model has been developed to track electrons through the transport channel of the cooler. This allows the offline study of response schemes around any particular setting of the cooler. It is envisaged to control linear, dipole and quadrupole behavior of the e-beam. Application of the model will result in optimized e-beam transport settings for a lossless and cool beam transport. This will improve cooling and recuperation efficiency and allow quick adjustment of the e-beam to the various operational modes of the machine. A good relative agreement of the model and the cooler could be shown. Main focus lies now in overhauling the software and finding suitable initial conditions to improve the agreement to an absolute degree. | ||
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Slides TUM22 [3.784 MB] | |
| DOI • | reference for this paper ※ https://doi.org/10.18429/JACoW-COOL2017-TUM22 | |
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