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7 results on '"Derré, J."'

2. Performances of Anode-resistive Micromegas for HL-LHC.

Author

Manjarrés, J., Alexopoulos, T., Attié, D., Boyer, M., Derré, J., Fanourakis, G., Ferrer-Ribas, E., Galan, J., Gazis, E., Geralis, T., Giganon, A., Giomataris, I., Herlant, S., Jeanneau, F., Schune, Ph., Titov, M., and Tsipolitis, G.

Subjects
MUONS, PIONS, LARGE Hadron Collider
Abstract

Micromegas technology is a promising candidate to replace Atlas forward muon chambers -tracking and trigger- for future HL-LHC upgrade of the experiment. The increase on background and pile-up event probability requires detector performances which are currently under studies in intensive RD activities. We studied performances of four different resistive Micromegas detectors with different read-out strip pitches. These chambers were tested using ~ 120 GeV momentum pions, at H6 CERN-SPS beam line in autumn 2010. For a strip pitch 500yum we measure a resolution of ~90 µm and a efficiency of ~ 98%. The track angle effect on the efficiency was also studied. Our results show that resistive techniques induce no degradation on the efficiency or resolution, with respect to the standard Micromegas. In some configuration the resistive coating is able to reduce the discharge currents at least by a factor of 100. [ABSTRACT FROM AUTHOR]

Published
2012
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3. Cherenkov Radiation Emission in uniaxial optical materials.

Author

Delbart, A., Derré, J., and Chipaux, R.

Abstract

We report a theoretical study of the Cherenkov radiation emission in uniaxial optical materials. The formalism is based on the previous work of Muzicar (1961) whose results in terms of energetic properties of the emitted waves are corrected. This formalism is used to predict the Cherenkov radiation emission in a strongly birefringent sodium nitrate crystal (NaNO3). [ABSTRACT FROM AUTHOR]

Published
1998
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5. Study of a micromegas chamber in a neutron beam.

Author

Alexopoulos, T., Attié, D., Avramidou, R., Boyer, M., Christodoulou, M., Colas, P., Derré, J., Diblen, F., Fanourakis, G., Ferrer-Ribas, E., Gazis, E., Geralis, T., Giganon, A., Giomataris, I., Harissopulos, S., Herlant, S., Jeanneau, F., Karakostas, K., Kirch, S., and Kokkoris, M.

Published
2010
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6. Micromegas study for the sLHC environment.

Author

Alexopoulos, T., Attié, D., Boyer, M., Colas, P., Derré, J., Diblen, F., Fanourakis, G., Ferrer-Ribas, E., Gazis, E., Geralis, T., Giganon, A., Giomataris, I., Herlant, S., Jeanneau, F., Kirch, S., Ntomari, E., Papaevangelou, Th, Titov, M., Tomás, A., and Tsipolitis, G.

Published
2010
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7. Spherical TPC development and trends.

Author

Andriamonje, S., Aune, S., Bougamont, E., Chapellier, M., Colas, P., Derré, J., Ferrer-Ribas, E., Gaffet, S., Gerbier, G., Giomataris, I., Gros, M., Irastorza, I. G., Mangier, P., Lemrani, R., Navick, X. F., Piquemal, P., Salin, P., Savvidis, I., Vergados, J. D., and Zampaolo, M.

Published
2009
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