Background discrimination with a Micromegas detector prototype and veto system for BabyIAXO
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| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| author | Altenmüller, K. Castel, J. F. Cebrián, S. Dafni, T. Díez-Ibañez, D. Ezquerro, A. Ferrer-Ribas, E. Galan, J. Galindo, J. García, J. A. Giganon, A. Goblin, C. Irastorza, I. G. Loiseau, C. Luzón, G. Navick, X. F. Margalejo, C. Mirallas, H. Obis, L. de Solórzano, A. Ortiz Papaevangelou, T. Pérez, O. Quintana, A. Ruz, J. Vogel, J. K. |
| author_facet | Altenmüller, K. Castel, J. F. Cebrián, S. Dafni, T. Díez-Ibañez, D. Ezquerro, A. Ferrer-Ribas, E. Galan, J. Galindo, J. García, J. A. Giganon, A. Goblin, C. Irastorza, I. G. Loiseau, C. Luzón, G. Navick, X. F. Margalejo, C. Mirallas, H. Obis, L. de Solórzano, A. Ortiz Papaevangelou, T. Pérez, O. Quintana, A. Ruz, J. Vogel, J. K. |
| contents | In this paper we present measurements performed with a Micromegas X-ray detector setup. The detector is a prototype in the context of the BabyIAXO helioscope, which is under construction to search for an emission of the hypothetical axion particle from the sun. An important component of such a helioscope is a low background X-ray detector with a high efficiency in the 1-10 keV energy range. The goal of the measurement was to study techniques for background discrimination. In addition to common techniques we used a multi-layer veto system designed to tag cosmogenic neutron background. Over an effective time of 52 days, a background level of $8.6 \times 10^{-7}\,\text{counts keV}^{-1}\,\text{cm}^{-2} \, \text{s}^{-1}$ was reached in a laboratory at above ground level. This is the lowest background level achieved at surface level. In this paper we present the experimental setup, show simulations of the neutron-induced background, and demonstrate the process to identify background signals in the data. Finally, prospects to reach lower background levels down to $10^{-7} \, \text{counts keV}^{-1} \, \text{cm}^{-2} \, \text{s}^{-1}$ will be discussed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_06316 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Background discrimination with a Micromegas detector prototype and veto system for BabyIAXO Altenmüller, K. Castel, J. F. Cebrián, S. Dafni, T. Díez-Ibañez, D. Ezquerro, A. Ferrer-Ribas, E. Galan, J. Galindo, J. García, J. A. Giganon, A. Goblin, C. Irastorza, I. G. Loiseau, C. Luzón, G. Navick, X. F. Margalejo, C. Mirallas, H. Obis, L. de Solórzano, A. Ortiz Papaevangelou, T. Pérez, O. Quintana, A. Ruz, J. Vogel, J. K. Instrumentation and Detectors In this paper we present measurements performed with a Micromegas X-ray detector setup. The detector is a prototype in the context of the BabyIAXO helioscope, which is under construction to search for an emission of the hypothetical axion particle from the sun. An important component of such a helioscope is a low background X-ray detector with a high efficiency in the 1-10 keV energy range. The goal of the measurement was to study techniques for background discrimination. In addition to common techniques we used a multi-layer veto system designed to tag cosmogenic neutron background. Over an effective time of 52 days, a background level of $8.6 \times 10^{-7}\,\text{counts keV}^{-1}\,\text{cm}^{-2} \, \text{s}^{-1}$ was reached in a laboratory at above ground level. This is the lowest background level achieved at surface level. In this paper we present the experimental setup, show simulations of the neutron-induced background, and demonstrate the process to identify background signals in the data. Finally, prospects to reach lower background levels down to $10^{-7} \, \text{counts keV}^{-1} \, \text{cm}^{-2} \, \text{s}^{-1}$ will be discussed. |
| title | Background discrimination with a Micromegas detector prototype and veto system for BabyIAXO |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2403.06316 |