Search

Your search keyword '"Ounalli, L."' showing total 16 results
Start Over Author "Ounalli, L."
16 results on '"Ounalli, L."'

1. New gas mixtures suitable for rare event detection using a Micromegas-TPC detector

Author

Ounalli, L., Vuilleumier, J-L., Schenker, D., and Vuilleumier, J-M.

Subjects
High Energy Physics - Experiment, Physics - Instrumentation and Detectors
Abstract

The aim of the presented work was to develop further techniques based on a Micromegas-TPC, in order to reach a high gas gain with good energy resolution, and to search for gas mixtures suitable for rare event detection. This paper focuses on xenon, which is convenient for the search of neutrinoless double beta decay in 136 Xe. Conversely, a small admixture of xenon to CF 4 can reduce attachment in the latter. This gas mixture would be suitable for dark matter searches and the study of solar and reactor neutrinos. Various configurations of the Micromegas plane were investigated and are described., Comment: 14 pages, 8 figures, article, revised version with improved figures, text modifications, accepted for publication by JINST

Published
2008
Full Text
View/download PDF

2. Systematic study of trace radioactive impurities in candidate construction materials for EXO-200

Author

Leonard, D. S., Grinberg, P., Weber, P., Baussan, E., Djurcic, Z., Keefer, G., Piepke, A., Pocar, A., Vuilleumier, J. -L., Vuilleumier, J. -M., Akimov, D., Bellerive, A., Bowcock, M., Breidenbach, M., Burenkov, A., Conley, R., Craddock, W., Danilov, M., DeVoe, R., Dixit, M., Dolgolenko, A., Ekchtout, I., Fairbank Jr., W., Farine, J., Fierlinger, P., Flatt, B., Gratta, G., Green, M., Hall, C., Hall, K., Hallman, D., Hargrove, C., Herbst, R., Hodgson, J., Jeng, S., Kolkowitz, S., Kovalenko, A., Kovalenko, D., LePort, F., Mackay, D., Moe, M., Díez, M. Montero, Neilson, R., Odian, A., O'Sullivan, K., Ounalli, L., Prescott, C. Y., Rowson, P. C., Schenker, D., Sinclair, D., Skarpaas, K., Smirnov, G., Stekhanov, V., Strickland, V., Virtue, C., Wamba, K., and Wodin, J.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The Enriched Xenon Observatory (EXO) will search for double beta decays of 136Xe. We report the results of a systematic study of trace concentrations of radioactive impurities in a wide range of raw materials and finished parts considered for use in the construction of EXO-200, the first stage of the EXO experimental program. Analysis techniques employed, and described here, include direct gamma counting, alpha counting, neutron activation analysis, and high-sensitivity mass spectrometry., Comment: 32 pages, 6 figures. Expanded introduction, added missing table entry. Accepted for publication in Nucl. Instrum. Meth. A

Published
2007
Full Text
View/download PDF

3. A linear RFQ ion trap for the Enriched Xenon Observatory

Author

Flatt, B., Green, M., Wodin, J., DeVoe, R., Fierlinger, P., Gratta, G., LePort, F., Diez, M. Montero, Neilson, R., OSullivan, K., Pocar, A., Waldman, S., Baussan, E., Breidenbach, M., Conley, R., Fairbank Jr., W., Farine, J., Hall, C., Hall, K., Hallman, D., Hargrove, C., Hauger, M., Hodgson, J., Juget, F., Leonard, D. S., Mackay, D., Martin, Y., Mong, B., Odian, A., Ounalli, L., Piepke, A., Prescott, C. Y., Rowson, P. C., Skarpass, K., Schenker, D., Sinclair, D., Strickland, V., Virtue, C., Vuilleuimier, J. -L., Vuilleuimier, J. -M., Wamba, K., and Weber, P.

Subjects
Physics - Instrumentation and Detectors
Abstract

The design, construction, and performance of a linear radio-frequency ion trap (RFQ) intended for use in the Enriched Xenon Observatory (EXO) are described. EXO aims to detect the neutrinoless double-beta decay of $^{136}$Xe to $^{136}$Ba. To suppress possible backgrounds EXO will complement the measurement of decay energy and, to some extent, topology of candidate events in a Xe filled detector with the identification of the daughter nucleus ($^{136}$Ba). The ion trap described here is capable of accepting, cooling, and confining individual Ba ions extracted from the site of the candidate double-beta decay event. A single trapped ion can then be identified, with a large signal-to-noise ratio, via laser spectroscopy., Comment: 18 pages, pdflatex, submitted to NIM A

Published
2007
Full Text
View/download PDF

4. A liquid xenon ionization chamber in an all-fluoropolymer vessel

Author

EXO Collaboration, LePort, F., Pocar, A., Bartoszek, L., DeVoe, R., Fierlinger, P., Flatt, B., Gratta, G., Green, M., Koffas, T., Diez, M. Montero, Neilson, R., O'Sullivan, K., Waldman, S., Wodin, J., Woisard, D., Baussan, E., Breidenbach, M., Conley, R., Fairbank Jr., W., Farine, J., Hall, C., Hall, K., Hallman, D., Hargrove, C., Hodgson, J., Jeng, S., Leonard, D. S., Mackay, D., Martin, Y., Odian, A., Ounalli, L., Piepke, A., Prescott, C. Y., Rowson, P. C., Skarpaas, K., Schenker, D., Sinclair, D., Stekhanov, V., Strickland, V., Virtue, C., Vuilleumier, J. -L., Vuilleumier, J. -M., Wamba, K., and Weber, P.

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

A novel technique has been developed to build vessels for liquid xenon ionization detectors entirely out of ultra-clean fluoropolymer. We describe the advantages in terms of low radioactivity contamination, provide some details of the construction techniques, and show the energy resolution achieved with a prototype all-fluoropolymer ionization detector., Comment: 12 pages, 9 figures

Published
2006
Full Text
View/download PDF

5. Mobility of thorium ions in liquid xenon

Author

Wamba, K., Hall, C., Breidenbach, M., Conley, R., Odian, A., Prescott, C. Y., Rowson, P. C., Sevilla, J., Skarpaas, K., DeVoe, R., Djurcic, Z., Fairbank Jr., W. M., Gratta, G., Green, M., Hall, K., Hauger, M., Jeng, S-C., Koffas, T., LePort, F., Leonard, D., Martin, J-M., Neilson, R., Ounalli, L., Piepke, A., Schenker, D., Stekhanov, V., Vuilleumier, J-L., Waldman, S., Weber, P., and Wodin, J.

Subjects
Condensed Matter - Other Condensed Matter
Abstract

We present a measurement of the $^{226}$Th ion mobility in LXe at 163.0 K and 0.9 bar. The result obtained, 0.240$\pm$0.011 (stat) $\pm$0.011 (syst) cm$^{2}$/(kV-s), is compared with a popular model of ion transport., Comment: 6.5 pages, 7

Published
2005
Full Text
View/download PDF

11. Systematic study of trace radioactive impurities in candidate construction materials for EXO-200

Author

Leonard, D.S., primary, Grinberg, P., additional, Weber, P., additional, Baussan, E., additional, Djurcic, Z., additional, Keefer, G., additional, Piepke, A., additional, Pocar, A., additional, Vuilleumier, J.-L., additional, Vuilleumier, J.-M., additional, Akimov, D., additional, Bellerive, A., additional, Bowcock, M., additional, Breidenbach, M., additional, Burenkov, A., additional, Conley, R., additional, Craddock, W., additional, Danilov, M., additional, DeVoe, R., additional, Dixit, M., additional, Dolgolenko, A., additional, Ekchtout, I., additional, Fairbank, W., additional, Farine, J., additional, Fierlinger, P., additional, Flatt, B., additional, Gratta, G., additional, Green, M., additional, Hall, C., additional, Hall, K., additional, Hallman, D., additional, Hargrove, C., additional, Herbst, R., additional, Hodgson, J., additional, Jeng, S., additional, Kolkowitz, S., additional, Kovalenko, A., additional, Kovalenko, D., additional, LePort, F., additional, Mackay, D., additional, Moe, M., additional, Montero Díez, M., additional, Neilson, R., additional, Odian, A., additional, O’Sullivan, K., additional, Ounalli, L., additional, Prescott, C.Y., additional, Rowson, P.C., additional, Schenker, D., additional, Sinclair, D., additional, Skarpaas, K., additional, Smirnov, G., additional, Stekhanov, V., additional, Strickland, V., additional, Virtue, C., additional, Wamba, K., additional, and Wodin, J., additional

Published
2008
Full Text
View/download PDF

12. A linear RFQ ion trap for the Enriched Xenon Observatory

Author

Flatt, B., primary, Green, M., additional, Wodin, J., additional, DeVoe, R., additional, Fierlinger, P., additional, Gratta, G., additional, LePort, F., additional, Montero Díez, M., additional, Neilson, R., additional, O’Sullivan, K., additional, Pocar, A., additional, Waldman, S., additional, Baussan, E., additional, Breidenbach, M., additional, Conley, R., additional, Fairbank, W., additional, Farine, J., additional, Hall, C., additional, Hall, K., additional, Hallman, D., additional, Hargrove, C., additional, Hauger, M., additional, Hodgson, J., additional, Juget, F., additional, Leonard, D.S., additional, Mackay, D., additional, Martin, Y., additional, Mong, B., additional, Odian, A., additional, Ounalli, L., additional, Piepke, A., additional, Prescott, C.Y., additional, Rowson, P.C., additional, Skarpaas, K., additional, Schenker, D., additional, Sinclair, D., additional, Strickland, V., additional, Virtue, C., additional, Vuilleuimier, J.-L., additional, Vuilleuimier, J.-M., additional, Wamba, K., additional, and Weber, P., additional

Published
2007
Full Text
View/download PDF

13. A liquid xenon ionization chamber in an all-fluoropolymer vessel

Author

LePort, F., primary, Pocar, A., additional, Bartoszek, L., additional, DeVoe, R., additional, Fierlinger, P., additional, Flatt, B., additional, Gratta, G., additional, Green, M., additional, Koffas, T., additional, Montero Díez, M., additional, Neilson, R., additional, O’Sullivan, K., additional, Waldman, S., additional, Wodin, J., additional, Woisard, D., additional, Baussan, E., additional, Breidenbach, M., additional, Conley, R., additional, Fairbank, W., additional, Farine, J., additional, Hall, C., additional, Hall, K., additional, Hallman, D., additional, Hargrove, C., additional, Hodgson, J., additional, Jeng, S., additional, Leonard, D.S., additional, Mackay, D., additional, Martin, Y., additional, Odian, A., additional, Ounalli, L., additional, Piepke, A., additional, Prescott, C.Y., additional, Rowson, P.C., additional, Skarpaas, K., additional, Schenker, D., additional, Sinclair, D., additional, Stekhanov, V., additional, Strickland, V., additional, Virtue, C., additional, Vuilleumier, J.-L., additional, Vuilleumier, J.-M., additional, Wamba, K., additional, and Weber, P., additional

Published
2007
Full Text
View/download PDF

15. Mobility of thorium ions in liquid xenon

Author

Wamba, K., primary, Hall, C., additional, Breidenbach, M., additional, Conley, R., additional, Odian, A., additional, Prescott, C.Y., additional, Rowson, P.C., additional, Sevilla, J., additional, Skarpaas, K., additional, DeVoe, R., additional, Djurcic, Z., additional, Fairbank Jr., W.M., additional, Gratta, G., additional, Green, M., additional, Hall, K., additional, Hauger, M., additional, Jeng, S.-C., additional, Koffas, T., additional, LePort, F., additional, Leonard, D., additional, Martin, J.-M., additional, Neilson, R., additional, Ounalli, L., additional, Piepke, A., additional, Schenker, D., additional, Stekhanov, V., additional, Vuilleumier, J.-L., additional, Waldman, S., additional, Weber, P., additional, and Wodin, J., additional

Published
2005
Full Text
View/download PDF

16. Enriched Xenon Observatory for double beta decay

Author

Wodin, J., Leonard, D., Piepke, A., Vogel, P., Bellerive, A., Bowcock, M., Dixit, M., Ekchtout, I., Hargrove, C., Sinclair, D., Strickland, V., Fairbank Jr, W., Jeng, S., Hall, K., Moe, M., Akimov, D., Burenkov, A., Danilov, M., Dolgolenko, A., Kovalenko, A., Kovalenko, D., Smirnov, G., Stekhanov, V., Farine, J., Hallman, D., Virtue, C., Hauger, M., Juget, F., Ounalli, L., Schenker, D., Vuilleumier, J. -L, Vuilleumier, J. -M, Weber, P., Martin Breidenbach, Conley, R., Hall, C., Mckay, D., Odian, A., Prescott, C., Rowson, P., Sevilla, J., Skarpaas, K., Wamba, K., Voe, R., Fierlinger, P., Flatt, B., Gratta, G., Green, M., Leport, F., Montero-Diez, M., Neilson, R., and Pocar, A.

Catalog

Books, media, physical & digital resources
See catalog results