Article
Micromegas at low pressure for beam tracking
Author/s | Pancin, Julien
Fernández Martínez, Begoña Damoy, S. Kebbiri, Mariam Papaevangelou, Thomas Riallot, Marc |
Department | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2012 |
Deposit Date | 2021-01-20 |
Published in |
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Abstract | New facilities like FAIR at GSI or SPIRAL2 at GANIL, will provide radioactive ion beams at low energies (less than 10 MeV/n). Such beams have generally a large emittance, which requires the use of beam tracking detectors ... New facilities like FAIR at GSI or SPIRAL2 at GANIL, will provide radioactive ion beams at low energies (less than 10 MeV/n). Such beams have generally a large emittance, which requires the use of beam tracking detectors to reconstruct the exact trajectories of the nuclei. To avoid the angular and energy straggling that classical beam tracking detectors would generate in the beam due to their thickness, we propose the use of SED (Secondary Electron Detectors). It consists of a low pressure gaseous detector placed outside the beam coupled to an emissive foil in the beam. Since 2008, different low pressure gaseous detectors (wire chambers and micromegas) have been constructed and tested. The performances achievable at low pressure are similar to or even better than the ones at atmospheric pressure. The fast charge collection leads to excellent timing properties as well as high counting rate capabilities. Several micromegas at low pressure were tested in the laboratory demonstrating a good time resolution, 13030 ps, which is compatible with the results obtained with wire chambers. |
Project ID. | FPA2009-08848 |
Citation | Pancin, J., Fernández Martínez, B., Damoy, S., Kebbiri, M., Papaevangelou, T. y Riallot, M. (2012). Micromegas at low pressure for beam tracking. Journal of Instrumentation, 7 (3), C03017. |
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