A Custom Online Ultrasonic Gas Mixture Analyzer With Simultaneous Flowmetry, Developed for the Upgraded Evaporative Cooling System of the ATLAS Silicon Tracker

Autor: B. DiGirolamo, P. Bonneau, G. Bozza, Steve McMahon, S. Katunin, C. Degeorge, J. Berthoud, E. Da Riva, J. Botelho-Direito, M. Battistin, M. Mathieu, G. D. Hallewell, A. Bitadze, Vic Vacek, Martin Doubek, Koichi Nagai, Cecile Deterre, G. Boyd, Richard Bates, Alexandre Rozanov, Lukasz Zwalinski, O. Crespo-Lopez, M. Vitek, Jan Godlewski, N. Langevin, N. Bousson, G. Favre, S. Berry, David Robinson, D. Lombard, C. Rossi

Publikováno v: IEEE Transactions on Nuclear Science. 61:2059-2065

We describe a combined ultrasonic instrument for continuous gas flow measurement and simultaneous real-time binary gas mixture analysis. In the instrument, sound bursts are transmitted in opposite directions, which may be aligned with the gas flow pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf54b88beda6f0c92a560b1e26225f24
https://doi.org/10.1109/tns.2014.2326961

New solar axion search using the CERN Axion Solar Telescope withHe4filling

Autor: T. Papaevangelou, S. C. Yildiz, I. Savvidis, M. D. Hasinoff, Biljana Lakić, J. M. Carmona, I. Giomataris, A. Belov, Evangelos Gazis, T. O. Niinikoski, V. Burwitz, José Villar, L. Stewart, S. Neff, E. Da Riva, Theodoros Vafeiadis, J. Bremer, F.J. Iguaz, Ante Ljubičić, Dieter Hoffmann, Sami K. Solanki, M. Rosu, Markus Kuster, Sergei Gninenko, A. Tomás, T. Geralis, Krešimir Jakovčić, J. G. Garza, Joachim Jacoby, M. Gomez Marzoa, T. Dafni, Georgios Fanourakis, C. Eleftheriadis, M. Kavuk, M. J. Pivovaroff, Konstantin Zioutas, Julia Vogel, Heinrich Bräuninger, J. M. Laurent, Giovanni Cantatore, S. Aune, A. Liolios, Serkant Ali Cetin, K. Barth, G. Luzón, Milica Krčmar, M. Davenport, Marin Karuza, J. A. Garcia, I. Ortega, N. Elias, I. Shilon, Metin Arik, A. V. Dermenev, E. Georgiopoulou, Javier Galan, Georg G. Raffelt, I. G. Irastorza, J. Ruz, J. I. Collar, Adriane De Assis Lawisch Rodriguez, E. Ferrer-Ribas, A. Gardikiotis, A. Nordt

Publikováno v: Physical Review D. 92

The CERN Axion Solar Telescope (CAST) searches for a -> gamma conversion in the 9 T magnetic field of a refurbished LHC test magnet that can be directed toward the Sun. Two parallel magnet bores can be filled with helium of adjustable pressure to mat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22a6a1ebd6e4e407dce7916d57c20aa4
https://doi.org/10.1103/physrevd.92.021101

Search for Solar Axions by the CERN Axion Solar Telescope withHe3Buffer Gas: Closing the Hot Dark Matter Gap

Autor: M. Tsagri, T. Guthörl, M. Gomez Marzoa, S. C. Yildiz, J. G. Garza, T. Dafni, M. Davenport, S. Borghi, J. M. Laurent, M. D. Hasinoff, Steffen Hauf, N. Elias, P. S. Silva, Sami K. Solanki, S. Aune, Joachim Jacoby, Markus Kuster, Evangelos Gazis, T. Vafeiadis, F.J. Iguaz, P. M. Lang, E. Da Riva, Peter Friedrich, A. Liolios, Dieter H. H. Hoffmann, Georg G. Raffelt, T. O. Niinikoski, Georgios Fanourakis, M. J. Pivovaroff, Konstantin Zioutas, A. Nordt, C. Eleftheriadis, Ioannis Giomataris, Heinrich Bräuninger, J. Ruz, T. Geralis, Serkant Ali Cetin, Milica Krčmar, K. Königsmann, G. Cantatore, Ante Ljubičić, J. I. Collar, Biljana Lakić, T. Papaevangelou, J. M. Carmona, I. Savvidis, K. van Bibber, S. Neff, A. Tomás, E. Georgiopoulou, S. N. Gninenko, M. Arik, E. Gruber, A. Belov, Javier Galan, Rainer Kotthaus, F. Haug, A Rodríguez, L. Stewart, J. A. Garcia, Hector Gomez, Marin Karuza, E. Ferrer-Ribas, I. G. Irastorza, H. Riege, A. Gardikiotis, Raimo Hartmann, Julia Vogel, K. Barth, G. Luzón, Krešimir Jakovčić, M. Rosu, I. Shilon, José Villar

Publikováno v: Physical Review Letters. 112

The CERN Axion Solar Telescope has finished its search for solar axions with He-3 buffer gas, covering the search range 0.64 eV less than or similar to ma less than or similar to 1.17 eV. This closes the gap to the cosmological hot dark matter limit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc2dfb3394a97968daf1c410519ee691
https://doi.org/10.1103/physrevlett.112.091302

Development of a custom on-line ultrasonic vapour analyzer/flowmeter for the ATLAS inner detector, with application to gaseous tracking and Cherenkov detectors

Autor: E. Perez-Rodriguez, J. Botelho-Direito, S. McMahon, Koichi Nagai, A. Bitadze, D. Lombard, Vaclav Vacek, J. Berthoud, Lukasz Zwalinski, C. Rossi, Martin Doubek, S. Katunin, M. Vitek, G. Boyd, Michele Battistin, Richard Bates, S. Berry, B. DiGirolamo, N. Bousson, G. Bozza, M. Mathieu, Gregory David Hallewell, Alexandre Rozanov, C. Degeorge, E. Da Riva, Jan Godlewski, P. Bonneau

Precision sound velocity measurements can simultaneously determine binary gas composition and flow. We have developed an analyzer with custom electronics, currently in use in the ATLAS inner detector, with numerous potential applications. The instrum

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dde3911502dc9a64d9110ea69171f801
http://cds.cern.ch/record/1490905

A combined ultrasonic flow meter and binary vapour mixture analyzer for the ATLAS silicon tracker

Autor: R Bates, M Battistin, S Berry, J Berthoud, A Bitadze, P Bonneau, J Botelho-Direito, N Bousson, G Boyd, G Bozza, E Da Riva, C Degeorge, C Deterre, B DiGirolamo, M Doubek, D Giugni, J Godlewski, G Hallewell, S Katunin, D Lombard, M Mathieu, S McMahon, K Nagai, E Perez-Rodriguez, C Rossi, A Rozanov, V Vacek, M Vitek, L Zwalinski

Publikováno v: Journal of Instrumentation 8(02), P02006 (2013). doi:10.1088/1748-0221/8/02/P02006
Journal of Instrumentation
Journal of Instrumentation, IOP Publishing, 2013, 8, pp.P02006. ⟨10.1088/1748-0221/8/02/P02006⟩
Journal of Instrumentation, 2013, 8, pp.P02006. ⟨10.1088/1748-0221/8/02/P02006⟩

An upgrade to the ATLAS silicon tracker cooling control system may require a change from C3F8 (octafluoro-propane) evaporative coolant to a blend containing 10-25% of C2F6 (hexafluoro-ethane). Such a change will reduce the evaporation temperature to

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e3ead1b3a7097ea064fa753e8f728c9