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Authors = Thibaut Houdy

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29 pages, 6635 KiB  
Article
Quantitative Long-Term Monitoring of the Circulating Gases in the KATRIN Experiment Using Raman Spectroscopy
by Max Aker, Konrad Altenmüller, Armen Beglarian, Jan Behrens, Anatoly Berlev, Uwe Besserer, Benedikt Bieringer, Klaus Blaum, Fabian Block, Beate Bornschein, Lutz Bornschein, Matthias Böttcher, Tim Brunst, Thomas C. Caldwell, Suren Chilingaryan, Wonqook Choi, Deseada D. Díaz Barrero, Karol Debowski, Marco Deffert, Martin Descher, Peter J. Doe, Otokar Dragoun, Guido Drexlin, Stephan Dyba, Frank Edzards, Klaus Eitel, Enrico Ellinger, Ralph Engel, Sanshiro Enomoto, Mariia Fedkevych, Arne Felden, Joseph F. Formaggio, Florian Fränkle, Gregg B. Franklin, Fabian Friedel, Alexander Fulst, Kevin Gauda, Woosik Gil, Ferenc Glück, Robin Größle, Rainer Gumbsheimer, Volker Hannen, Norman Haußmann, Klaus Helbing, Stephanie Hickford, Roman Hiller, David Hillesheimer, Dominic Hinz, Thomas Höhn, Thibaut Houdy, Anton Huber, Alexander Jansen, Christian Karl, Jonas Kellerer, Luke Kippenbrock, Manuel Klein, Christoph Köhler, Leonard Köllenberger, Andreas Kopmann, Marc Korzeczek, Alojz Kovalík, Bennet Krasch, Holger Krause, Luisa La Cascio, Thierry Lasserre, Thanh-Long Le, Ondřej Lebeda, Bjoern Lehnert, Alexey Lokhov, Moritz Machatschek, Emma Malcherek, Alexander Marsteller, Eric L. Martin, Matthias Meier, Christin Melzer, Susanne Mertens, Klaus Müller, Simon Niemes, Patrick Oelpmann, Alexander Osipowicz, Diana S. Parno, Alan W.P. Poon, Jose M. Lopez Poyato, Florian Priester, Oliver Rest, Marco Röllig, Carsten Röttele, R.G. Hamish Robertson, Caroline Rodenbeck, Milos Ryšavỳ, Rudolf Sack, Alejandro Saenz, Peter Schäfer, Anna Schaller (née Pollithy), Lutz Schimpf, Klaus Schlösser, Magnus Schlösser, Lisa Schlüter, Michael Schrank, Bruno Schulz, Michal Sefčík, Hendrik Seitz-Moskaliuk, Valérian Sibille, Daniel Siegmann, Martin Slezák, Felix Spanier, Markus Steidl, Michael Sturm, Menglei Sun, Helmut H. Telle, Larisa A. Thorne, Thomas Thümmler, Nikita Titov, Igor Tkachev, Drahoš Vénos, Kathrin Valerius, Ana P. Vizcaya Hernández, Marc Weber, Christian Weinheimer, Christiane Weiss, Stefan Welte, Jürgen Wendel, John F. Wilkerson, Joachim Wolf, Sascha Wüstling, Weiran Xu, Yung-Ruey Yen, Sergey Zadoroghny and Genrich Zelleradd Show full author list remove Hide full author list
Sensors 2020, 20(17), 4827; https://doi.org/10.3390/s20174827 - 26 Aug 2020
Cited by 14 | Viewed by 6347
Abstract
The Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the effective electron neutrino mass with a sensitivity of 0.2 eV/c2, i.e., improving on previous measurements by an order of magnitude. Neutrino mass data taking with KATRIN commenced in early 2019, and [...] Read more.
The Karlsruhe Tritium Neutrino (KATRIN) experiment aims at measuring the effective electron neutrino mass with a sensitivity of 0.2 eV/c2, i.e., improving on previous measurements by an order of magnitude. Neutrino mass data taking with KATRIN commenced in early 2019, and after only a few weeks of data recording, analysis of these data showed the success of KATRIN, improving on the known neutrino mass limit by a factor of about two. This success very much could be ascribed to the fact that most of the system components met, or even surpassed, the required specifications during long-term operation. Here, we report on the performance of the laser Raman (LARA) monitoring system which provides continuous high-precision information on the gas composition injected into the experiment’s windowless gaseous tritium source (WGTS), specifically on its isotopic purity of tritium—one of the key parameters required in the derivation of the electron neutrino mass. The concentrations cx for all six hydrogen isotopologues were monitored simultaneously, with a measurement precision for individual components of the order 10−3 or better throughout the complete KATRIN data taking campaigns to date. From these, the tritium purity, εT, is derived with precision of <10−3 and trueness of <3 × 10−3, being within and surpassing the actual requirements for KATRIN, respectively. Full article
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14 pages, 1045 KiB  
Article
Solar Neutrinos Spectroscopy with Borexino Phase-II
by Lino Miramonti, Matteo Agostini, Konrad Altenmueller, Simon Appel, Victor Atroshchenko, Zara Bagdasarian, Davide Basilico, Gianpaolo Bellini, Jay Benziger, Daniel Bick, Irene Bolognino, Giuseppe Bonfini, David Bravo, Barbara Caccianiga, Frank Calaprice, Alessio Caminata, Silvia Caprioli, Marco Carlini, Paolo Cavalcante, Francesca Cavanna, Alexander Chepurnov, Koun Choi, Laura Collica, Stefano Davini, Alexander Derbin, XueFeng Ding, Antonio Di Ludovico, Lea Di Noto, Ilia Drachnev, Kirill Fomenko, Andrey Formozov, Davide Franco, Federico Gabriele, Cristiano Galbiati, Michael Gschwender, Chiara Ghiano, Marco Giammarchi, Augusto Goretti, Maxim Gromov, Daniele Guffanti, Caren Hagner, Thibaut Houdy, Ed Hungerford, Aldo Ianni, Andrea Ianni, Anna Jany, Dominik Jeschke, Vladislav Kobychev, Denis Korablev, Gyorgy Korga, Tobias Lachenmaier, Matthias Laubenstein, Evgeny Litvinovich, Francesco Lombardi, Paolo Lombardi, Livia Ludhova, Georgy Lukyanchenko, Liudmila Lukyanchenko, Igor Machulin, Giulio Manuzio, Simone Marcocci, Jelena Maricic, Johann Martyn, Emanuela Meroni, Mikko Meyer, Marcin Misiaszek, Valentina Muratova, Birgit Neumair, Lothar Oberauer, Bjoern Opitz, Vsevolod Orekhov, Fausto Ortica, Marco Pallavicini, Laszlo Papp, Omer Penek, Lidio Pietrofaccia, Nelly Pilipenko, Andrea Pocar, Alessio Porcelli, Georgy Raikov, Gioacchino Ranucci, Alessandro Razeto, Alessandra Re, Mariia Redchuk, Aldo Romani, Nicola Rossi, Sebastian Rottenanger, Stefan Schöenert, Dmitrii Semenov, Mikhail Skorokhvatov, Oleg Smirnov, Albert Sotnikov, Lee F. F. Stokes, Yura Suvorov, Roberto Tartaglia, Gemma Testera, Jan Thurn, Maria Toropova, Evgenii Unzhakov, Alina Vishneva, Bruce Vogelaar, Franz Von Feilitzsch, Stefan Weinz, Marcin Wojcik, Michael Wurm, Zachary Yokley, Oleg Zaimidoroga, Sandra Zavatarelli, Kai Zuber and Grzegorz Zuzeladd Show full author list remove Hide full author list
Universe 2018, 4(11), 118; https://doi.org/10.3390/universe4110118 - 7 Nov 2018
Cited by 2 | Viewed by 4986
Abstract
Solar neutrinos have played a central role in the discovery of the neutrino oscillation mechanism. They still are proving to be a unique tool to help investigate the fusion reactions that power stars and further probe basic neutrino properties. The Borexino neutrino observatory [...] Read more.
Solar neutrinos have played a central role in the discovery of the neutrino oscillation mechanism. They still are proving to be a unique tool to help investigate the fusion reactions that power stars and further probe basic neutrino properties. The Borexino neutrino observatory has been operationally acquiring data at Laboratori Nazionali del Gran Sasso in Italy since 2007. Its main goal is the real-time study of low energy neutrinos (solar or originated elsewhere, such as geo-neutrinos). The latest analysis of experimental data, taken during the so-called Borexino Phase-II (2011-present), will be showcased in this talk—yielding new high-precision, simultaneous wide band flux measurements of the four main solar neutrino components belonging to the “pp” fusion chain (pp, pep, 7 Be, 8 B), as well as upper limits on the remaining two solar neutrino fluxes (CNO and hep). Full article
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