التفاصيل البيبلوغرافية
| العنوان: |
Development of a Temperature Distributed Monitoring System Based On Raman Scattering in Harsh Environment. |
| المؤلفون: |
Cangialosi, C., Ouerdane, Y., Girard, S., Boukenter, A., Delepine-Lesoille, S., Bertrand, J., Marcandella, C., Paillet, P., Cannas, M. |
| المصدر: |
IEEE Transactions on Nuclear Science; Dec2014 Part 1, Vol. 61 Issue 6, p3315-3322, 8p |
| مصطلحات موضوعية: |
DETECTORS, GEOLOGICAL research, RADIOACTIVE wastes, HYDROGEN, RADIATION, STOKES equations |
| مستخلص: |
Raman Distributed Temperature Sensors (RDTSs) offer exceptional advantages to monitor the envisioned French deep geological repository for nuclear wastes, called Cigéo. Both \gamma -ray and hydrogen release from nuclear wastes can strongly affect the temperature measurements made with RDTS. We present experimental studies on how the performances of RDTS evolve in harsh environments like those associated with \gamma -rays or combined radiations and H_2 release. The response of two standard and one radiation tolerant multimode fibers (MMFs) are investigated. In all fibers the differential induced attenuation between Stokes and anti-Stokes signal, (\alpha AS - \alpha S) causes a temperature errors, up to 30^\circ C with standard multimode fibers (100 m) irradiated at 10 MGy dose. This degradation mechanism that is more detrimental than the radiation induced attenuation (RIA) limiting only the sensing range. The attenuation in the [800-1600 nm] spectral range at room temperature is explored for the three fibers \gamma -irradiated and/or hydrogen loaded to understand the origin of the differential RIA. We show that by adapting the characteristics of the used fiber for the sensing, we could limit its degradation but that additional hardening by system procedure is necessary to correct the T error in view of the integration of our RDTS technology in Cigéo. The current version of our correction technique allows today to limit the temperature error to \sim 2^\circ C for 10 MGy irradiated samples. [ABSTRACT FROM PUBLISHER] |
|
Copyright of IEEE Transactions on Nuclear Science is the property of IEEE and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Complementary Index |
