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1. Decentralized Peer Review in Open Science: A Mechanism Proposal

Author

Finke, Andreas and Hensel, Thomas

Subjects
Computer Science - Computer Science and Game Theory, Computer Science - Computers and Society, Economics - General Economics, K.3.m, K.4.2, K.4.3
Abstract

Peer review is a laborious, yet essential, part of academic publishing with crucial impact on the scientific endeavor. The current lack of incentives and transparency harms the credibility of this process. Researchers are neither rewarded for superior nor penalized for bad reviews. Additionally, confidential reports cause a loss of insights and make the review process vulnerable to scientific misconduct. We propose a community-owned and -governed system that 1) remunerates reviewers for their efforts, 2) publishes the (anonymized) reports for scrutiny by the community, 3) tracks reputation of reviewers and 4) provides digital certificates. Automated by transparent smart-contract blockchain technology, the system aims to increase quality and speed of peer review while lowering the chance and impact of erroneous judgements., Comment: 14 pages, 1 figure

Published
2024

2. Study of a possible silicon photomultiplier based readout of the large plastic scintillator neutron detector NeuLAND

Author

Hensel, Thomas, Weinberger, David, Bemmerer, Daniel, Boretzky, Konstanze, Gašparić, Igor, Stach, Daniel, Wagner, Andreas, and Zuber, Kai

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

The NeuLAND (New Large-Area Neutron Detector) plastic-scintillator-based time-of-flight detector for 0.1-1.6 GeV neutrons is currently under construction at the Facility for Antiproton and Ion Research (FAIR), Darmstadt, Germany. In its final configuration, NeuLAND will consist of 3000 2.7 m $\times$ 5 cm $\times$ 5 cm big plastic scintillator bars that are read out on each end by fast timing photomultipliers. Here, data from a comprehensive study of an alternative light readout scheme using silicon photomultipliers (SiPM) are reported. For this purpose, a NeuLAND bar was instrumented on each end with a SiPM-based prototype of the same geometry as a 1'' photomultiplier tube, including four 6 $\times$ 6 mm$^2$ SiPMs, amplifiers, high voltage supply, and microcontroller. Tests were carried out using the 35 MeV electron beam from the superconducting Electron Linac for beams with high Brilliance and low Emittance (ELBE) with its picosecond-level time jitter in two different modes of operation, namely parasitic mode with one electron per bunch and single-user mode with 1-60 electrons per bunch. Acqiris fast digitisers were used for data acquisition. In addition, off-beam tests using cosmic rays and the NeuLAND data acquisition scheme have been carried out. Typical time resolutions of $\sigma_t\leq$ 120 ps were found for $\geq$95% efficiency for minimum ionising particles, improving on previous work at ELBE and exceeding the NeuLAND timing goal of $\sigma_t$ < 150 ps. Over a range of 10-300 MeV deposited energy in the NeuLAND bar, the gain was found to deviate by $\leq$10% ($\leq$20%) from linearity for 35 mm (75 mm) SiPM pitch, respectively, satisfactory for calorimetric use of the full NeuLAND detector. The dark rate of the prototype studied was found to be lower than the expected cosmic-ray induced background in NeuLAND., Comment: Submitted to Nucl. Inst. Meth. A

Published
2022
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3. STE-QUEST: Space Time Explorer and QUantum Equivalence principle Space Test

Author

Ahlers, Holger, Badurina, Leonardo, Bassi, Angelo, Battelier, Baptiste, Beaufils, Quentin, Bongs, Kai, Bouyer, Philippe, Braxmaier, Claus, Buchmueller, Oliver, Carlesso, Matteo, Charron, Eric, Chiofalo, Maria Luisa, Corgier, Robin, Donadi, Sandro, Droz, Fabien, Ecoffet, Robert, Ellis, John, Estève, Frédéric, Gaaloul, Naceur, Gerardi, Domenico, Giese, Enno, Grosse, Jens, Hees, Aurélien, Hensel, Thomas, Herr, Waldemar, Jetzer, Philippe, Kleinsteinberg, Gina, Klempt, Carsten, Lecomte, Steve, Lopes, Louise, Loriani, Sina, Métris, Gilles, Martin, Thierry, Martín, Victor, Müller, Gabriel, Nofrarias, Miquel, Santos, Franck Pereira Dos, Rasel, Ernst M., Robert, Alain, Saks, Noah, Salter, Mike, Schlippert, Dennis, Schubert, Christian, Schuldt, Thilo, Sopuerta, Carlos F., Struckmann, Christian, Tino, Guglielmo M., Valenzuela, Tristan, von Klitzing, Wolf, Wörner, Lisa, Wolf, Peter, Yu, Nan, and Zelan, Martin

Subjects
Physics - Space Physics, General Relativity and Quantum Cosmology, High Energy Physics - Experiment, High Energy Physics - Phenomenology, Quantum Physics
Abstract

An M-class mission proposal in response to the 2021 call in ESA's science programme with a broad range of objectives in fundamental physics, which include testing the Equivalence Principle and Lorentz Invariance, searching for Ultralight Dark Matter and probing Quantum Mechanics., Comment: As submitted to the M7 call in July 2022, except updated for the recent (Sept. 2022) MICROSCOPE results, and new section 2.5 summarizing the information provided to ESA during the September 2022 audition

Published
2022

4. Precision inertial sensing with quantum gases

Author

Hensel, Thomas, Loriani, Sina, Schubert, Christian, Fitzek, Florian, Abend, Sven, Ahlers, Holger, Siemß, Jan-Niclas, Hammerer, Klemens, Rasel, Ernst Maria, and Gaaloul, Naceur

Subjects
Physics - Atomic Physics
Abstract

Quantum sensors based on light-pulse atom interferometers allow for high-precision measurements of inertial and electromagnetic forces such as the accurate determination of fundamental constants as the fine structure constant or testing foundational laws of modern physics as the equivalence principle. These schemes unfold their full performance when large interrogation times and/or large momentum transfer can be implemented. In this article, we demonstrate how precision interferometry can benefit from the use of Bose-Einstein condensed sources when the state of the art is challenged. We contrast systematic and statistical effects induced by Bose-Einstein condensed sources with thermal sources in three exemplary science cases of Earth- and space-based sensors., Comment: 13 pages

Published
2020
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5. The new Felsenkeller 5 MV underground accelerator

Author

Bemmerer, Daniel, Cowan, Thomas E., Domula, Alexander, Döring, Toralf, Grieger, Marcel, Hammer, Sebastian, Hensel, Thomas, Hübinger, Lisa, Junghans, Arnd R., Ludwig, Felix, Müller, Stefan E., Reinicke, Stefan, Rimarzig, Bernd, Schmidt, Konrad, Schwengner, Ronald, Stöckel, Klaus, Szücs, Tamás, Turkat, Steffen, Wagner, Andreas, Wagner, Louis, and Zuber, Kai

Subjects
Physics - Accelerator Physics, Nuclear Experiment, Physics - Instrumentation and Detectors
Abstract

The field of nuclear astrophysics is devoted to the study of the creation of the chemical elements. By nature, it is deeply intertwined with the physics of the Sun. The nuclear reactions of the proton-proton cycle of hydrogen burning, including the 3He({\alpha},{\gamma})7Be reaction, provide the necessary nuclear energy to prevent the gravitational collapse of the Sun and give rise to the by now well-studied pp, 7Be, and 8B solar neutrinos. The not yet measured flux of 13N, 15O, and 17F neutrinos from the carbon-nitrogen-oxygen cycle is affected in rate by the 14N(p,{\gamma})15O reaction and in emission profile by the 12C(p,{\gamma})13N reaction. The nucleosynthetic output of the subsequent phase in stellar evolution, helium burning, is controlled by the 12C({\alpha},{\gamma})16O reaction. In order to properly interpret the existing and upcoming solar neutrino data, precise nuclear physics information is needed. For nuclear reactions between light, stable nuclei, the best available technique are experiments with small ion accelerators in underground, low-background settings. The pioneering work in this regard has been done by the LUNA collaboration at Gran Sasso/Italy, using a 0.4 MV accelerator. The present contribution reports on a higher-energy, 5.0 MV, underground accelerator in the Felsenkeller underground site in Dresden/Germany. Results from {\gamma}-ray, neutron, and muon background measurements in the Felsenkeller underground site in Dresden, Germany, show that the background conditions are satisfactory for nuclear astrophysics purposes. The accelerator is in the commissioning phase and will provide intense, up to 50{\mu}A, beams of 1H+, 4He+ , and 12C+ ions, enabling research on astrophysically relevant nuclear reactions with unprecedented sensitivity., Comment: Submitted to the Proceedings of the 5th International Solar Neutrino Conference, Dresden/Germany, 11-14 June 2018, to appear on World Scientific -- updated version (Figure 2 and relevant discussion updated, co-author A. Domula added)

Published
2018
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6. Coulomb dissociation of 16O into 4He and 12C

Author

Bott Lukas Thomas, Göbel Kathrin, Heil Michael, Kelić-Heil Aleksandra, Reifarth René, Aliotta Marialuisa, Almusidi Tahani, Alvarez-Pol Hector, Atar Leyla, Atkins Liam, Aumann Thomas, Bemmerer Daniel, Benlliure José, Bertulani Carlos, Boretzky Konstanze, Brückner Benjamin, Brandenburg Leonhard, Bruni Giovanni, Cabanelas Eiras Pablo, Caesar Christoph, Casarejos Enrique, Cederkall Joakim, Chulkov Leonid, Cortina-Gil Dolores, Danilov Andrey, De Filippo Enrico, Dellmann Sophia Florence, Deuter Isabell, Dueñas Díaz José Antonio, Duer Meytal, Elekes Zoltan, Erbacher Philipp, Escribano Rodriguez Sonia, Fülöp Zsolt, Falduto Ashton, Feijoo Manuel, Fiebiger Stefan, Gašparić Igor, Galaviz Daniel, García Borge María José, García-Jiménez Gabriel, Geraci Elena, Gernhäuser Roman, Glorius Jan, Gnoffo Brunilde, González Caamaño David, Graña González Antia, Grein Alexander, Hartig AnnaLena, Heftrich Tanja, Heggen Henning, Heine Marcel, Heinz Andreas, Henrich Corinna, Hensel Thomas, Holl Matthias, Homm Ilja, Horváth Ákos, Horvat Andrea, Jedele Andrea, Jelavic Malenica Desa, Jenegger Tobias, Johansson Håkan T., Jonson Björn, Kahlbow Julian, Kalantar-Nayestanaki Nasser, Kamenyero Armel, Khasawneh Kafa, Kiselev Oleg, Klenze Philipp, Knösel Marco, Koch Karsten, Kohls Marvin, Körper Daniel, Kröll Thorsten, Krasilovskaja Sabina, Kresan Dmytro, Kurtulgil Deniz, Kurz Nikolaus, Löher Bastian, Langer Christoph, Lederer-Woods Claudia, Lehr Christopher, Litvinov Yuri A, Lorenz Enis, Martorana Nunzia Simona, Motobayashi Tohru, Murillo Morales Silvia, Nacher Enrique, Nilsson Thomas, Pagano Emanuele Vincenzo, Panin Valerii, Park Joochun, Paschalis Stefanos, Perea Angel, Petri Marina, Pirrone Sara, Plag Ralf, Ponnath Lukas, Popočovski Romana, Reich Markus, Rhee Han-Bum, Rodriguez Sanchez Jose Luis, Rossi Dominic, Russotto Paolo, Sánchez-Benítez Ángel-Miguel, Sürder Christian, Savran Deniz, Scheit Heiko, Schmidt Konrad, Schulte Hendrik, Simon Haik, Simon Johannes, Starostin Viktor, Storck-Dutine Sonja, Törnqvist Hans Toshihide, Tanaka Junki, Tengblad Olof, Thomas Benedikt, Trimarchi Marina, Typel Stefan, Varga László, Volk Klaus, Volknandt Meiko, Wagner Vadim, Wamers Felix, Weigand Mario, and Zanetti Lorenzo

Subjects
Physics, QC1-999
Abstract

We measured the Coulomb dissociation of 16O into 4He and 12C within the FAIR Phase-0 program at GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Germany. From this we will extract the photon dissociation cross section 16O(α,γ)12C, which is the time reversed reaction to 12C(α,γ)16O. With this indirect method, we aim to improve on the accuracy of the experimental data at lower energies than measured so far. The expected low cross section for the Coulomb dissociation reaction and close magnetic rigidity of beam and fragments demand a high precision measurement. Hence, new detector systems were built and radical changes to the R3B setup were necessary to cope with the high-intensity 16O beam. All tracking detectors were designed to let the unreacted 16O ions pass, while detecting the 12C and 4He.

Published
2023
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7. Coulomb dissociation of $^{16}O$ into $^{4}He$ and $^{12}C$

Author

Bott, Lukas Thomas, Göbel, Kathrin, Aumann, Thomas, Reich, Markus, Rhee, Han-Bum, Rodriguez Sanchez, Jose Luis, Rossi, Dominic, Russotto, Paolo, Sánchez-Benítez, Ángel-Miguel, Sürder, Christian, Savran, Deniz, Scheit, Heiko, Schmidt, Konrad, Bemmerer, Daniel, Schulte, Hendrik, Simon, Haik, Simon, Johannes, Starostin, Viktor, Storck-Dutine, Sonja, Törnqvist, Hans Toshihide, Tanaka, Junki, Tengblad, Olof, Thomas, Benedikt, Trimarchi, Marina, Benlliure, José, Typel, Stefan, Varga, László, Volk, Klaus, Volknandt, Meiko, Wagner, Vadim, Wamers, Felix, Weigand, Mario, Zanetti, Lorenzo, Bertulani, Carlos, Boretzky, Konstanze, Brückner, Benjamin, Brandenburg, Leonhard, Bruni, Giovanni, Cabanelas Eiras, Pablo, Caesar, Christoph, Heil, Michael, Casarejos, Enrique, Cederkall, Joakim, Chulkov, Leonid, Cortina-Gil, Dolores, Danilov, Andrey, De Filippo, Enrico, Dellmann, Sophia Florence, Deuter, Isabell, Dueñas Díaz, José Antonio, Duer, Meytal, Kelić-Heil, Aleksandra, Elekes, Zoltan, Erbacher, Philipp, Escribano Rodriguez, Sonia, Fülöp, Zsolt, Falduto, Ashton, Feijoo, Manuel, Fiebiger, Stefan, Gašparić, Igor, Galaviz, Daniel, García Borge, María José, Reifarth, René, García-Jiménez, Gabriel, Geraci, Elena, Gernhäuser, Roman, Glorius, Jan, Gnoffo, Brunilde, González Caamaño, David, Graña González, Antia, Grein, Alexander, Hartig, AnnaLena, Heftrich, Tanja, Aliotta, Marialuisa, Heggen, Henning, Heine, Marcel, Heinz, Andreas, Henrich, Corinna, Hensel, Thomas, Holl, Matthias, Homm, Ilja, Horváth, Ákos, Horvat, Andrea, Jedele, Andrea, Almusidi, Tahani, Jelavic Malenica, Desa, Jenegger, Tobias, Johansson, Håkan T., Jonson, Björn, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kamenyero, Armel, Khasawneh, Kafa, Kiselev, Oleg, Klenze, Philipp, Alvarez-Pol, Hector, Knösel, Marco, Koch, Karsten, Kohls, Marvin, Körper, Daniel, Kröll, Thorsten, Krasilovskaja, Sabina, Kresan, Dmytro, Kurtulgil, Deniz, Kurz, Nikolaus, Löher, Bastian, Atar, Leyla, Langer, Christoph, Lederer-Woods, Claudia, Lehr, Christopher, Litvinov, Yuri A, Lorenz, Enis, Martorana, Nunzia Simona, Motobayashi, Tohru, Murillo Morales, Silvia, Nacher, Enrique, Nilsson, Thomas, Atkins, Liam, Pagano, Emanuele Vincenzo, Panin, Valerii, Park, Joochun, Paschalis, Stefanos, Perea, Angel, Petri, Marina, Pirrone, Sara, Plag, Ralf, Ponnath, Lukas, and Popočovski, Romana

Subjects
ddc:530
Published
2023

8. A new Time-of-flight detector for the R$$^3$$B setup

Author

Heil, M., Kelić-Heil, A., Bott, L., Almusidi, T., Alvarez-Pol, H., Atar, L., Atkins, L., Aumann, T., Benlliure, J., Boretzky, K., Brückner, B., Cabanelas, P., Caesar, C., Casarejos, E., Cederkall, J., Chulkov, L., Corsi, A., Dueñas, J., Erbacher, P., Rodriguez, S. Escribano, Falduto, A., Feijoo, M., Frotscher, A., Frühauf, J., Gašparić, I., Borge, M. J. G., Gerbig, J., Gernhäuser, R., Gilbert, M., Glorius, J., Gnoffo, B., Göbel, K., Caamaño, D. Gonzalez, Grein, A., Hartig, A.-L., Heggen, H., Heine, M., Heinz, A., Holl, M., Homm, I., Horvat, A., Johansson, H. T., Jonson, B., Kalantar-Nayestanaki, N., Kamenyero, A., Khodaparast, A., Kiselev, O., Klenze, P., Knösel, M., Koch, K., Körper, D., Kröll, T., Kurtulgil, D., Kurz, N., Löher, B., Langer, C., Lehr, C., Litvinov, Y., Liu, H., Morales, S. Murillo, Nácher, E., Nilsson, T., Park, J., Paschalis, S., Pellegri, L., Perea, A., Petri, M., Pohl, T., Ponnath, L., Popočovski, R., Reifarth, R., Rhee, H.-B., Sanchez, J. L. Rodriguez, Rossi, D., Sürder, C., Sánchez-Benítez, A. M., Savran, D., Scheit, H., Simon, H., Slavkovská, Z., Storck-Dutine, S., Sun, Y., Törnqvist, H. T., Tanaka, J., Tengblad, O., Thomas, B., Varga, L., Volknandt, M., Wagner, V., Wamers, F., Zanetti, L., Aliotta, Marialuisa, Alkhazov, Georgy, Almusidi, Tahani, Alvarez-Pol, Hector, André, Paul, Assié, Marlène, Atar, Leyla, Atkins, Liam, Audouin, Laurent, Aumann, Thomas, Authelet, Gilles, Ayyad, Yassid, Bajzek, Martin, Barriere, Antoine, Beceiro-Novo, Saul, Belogurov, Sergey, Bemmerer, Daniel, Benlliure, Jose, Bertulani, Carlos, Bezbakh, Andrey, Blanchon, Guillaume, Boos, Carl Georg, Boretzky, Konstanze, Borge, Maria J., Borzov, Ivan, Bott, Lukas, Brückner, Benjamin, Cabanelas Eiras, Pablo, Caesar, Christoph, Calinescu, Stefana, Casarejos, Enrique, Catford, Wilton, Cederkall, Joakim, Chatillon, Audrey, Cherciu, Madalin Ilie, Chishti, M Majid Rauf, Chulkov, Leonid, Cirstian, Andreea, Corsi, Anna, Cortina-Gil, Dolores, Cravo, Edgar, Crespo, Raquel, Danilov, Andrey, de Angelis, Giacomo, De Filippo, Enrico, Diaz-Torres, Alexis, Dickel, Timo, Dobrovolsky, Alexander, Doornenbal, Pieter, Duer, Meytal, Egelhof, Peter, Elekes, Zoltan, Enders, Joachim, Erbacher, Philipp, Escribano Rodriguez, Sonia, Fahlander, Claes, Falduto, Ashton, Feijoo, Martina, Fernandez Ruiz, Daniel, Fomichev, Andrey, Fulop, Zsolt, Galaviz Redondo, Daniel, Galiana, Elisabet, García, Gabriel, García Távora, Vicente, Gasparic, Igor, Ge, Zhuang, Geissel, Hans, Geraci, Elena, Gerl, Jürgen, Gernhäuser, Roman, Gillibert, Alain, Glorius, Jan, Gnoffo, Brunilde, Göbel, Kathrin, Golovkov, Mikhail, Golovtsov, Victor, Golubev, Pavel, González Caamaño, David, Gorshkov, Alexander, Graña González, Antia, Gridnev, Anatoly, Gruzinskii, Nikolai, Guimaraes, Valdir, Harakeh, Muhsin N., Hartig, Anna-Lena, Heftrich, Tanja, Heggen, Henning, Heil, Michael, Heinz, Andreas, Hen, Or, Henrich, Corinna, Henriques, Ana, Hensel, Thomas, Holl, Matthias, Homm, Ilja, Horvat, Andrea, Horváth, Ákos, Hucka, Jan-Paul, Inglessi, Alexander, Jedele, Andrea, Jelavic Malenica, Desa, Jenegger, Tobias, Ji, Liancheng, Johansson, Håkan, Jonson, Björn, Jurado, Beatriz, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kamenyero, Armel, Kazantseva, Erika, Kelic-Heil, Aleksandra, Khanzadeev, Alexey, Kiselev, Oleg, Klenze, Philipp, Knyazev, Alexander, Koch, Karsten, Kogimtzis, Moschos, Kokubun, Kei, Korolev, Guerman, Körper, Daniel, Korsheninnikov, Alexey, Korten, Wolfram, Kozlenko, Nikolai, Krasilovskaja, Sabina, Kresan, Dmytro, Krivshich, Anatoly, Kröll, Thorsten, Krupko, Sergey, Kudaibergenova, Eleonora, Kunne Sohler, Dorottya, Kurtulgil, Deniz, Kurz, Nikolaus, Kuzmin, Evgeny, Kuznetsov, Viacheslav, Labiche, Marc, Lagni, Andrea, Langer, Christoph, Lányi, Zsombor, Lazarus, Ian, Le Fèvre, Arnaud, Leifels, Yvonne, Lepine-Szily, Alinka, Lewitowicz, Marek, Lihtar, Ivana, Linh, Bui, Litvinov, Yuri, Liu, Hongna, Löher, Bastian, Lommel, Bettina, Lorenz, Enis, Lukasik, Jerzy, Macchiavelli, Augusto, Maev, Evgeny, Maillertet, Charles, Maisuzenko, Dmitrii, Maj, Adam, Martorana, Nunzia Simona, Mauss, Benoît, Mayri, Christophe, Milhomens da Fonseca, Leandro, Morfouace, Pierre, Mozumdar, Nikhil, Mücher, Dennis, Murillo Morales, Silvia, Nacher, Enrique, Nikolskii, Evgenii, Nilsson, Thomas, Nociforo, Chiara, Nolden, Fritz, Nyman, Göran, Obertelli, Alexandre, Pagano, Emanuele Vincenzo, Panin, Valerii, Park, Joochun, Paschalis, Stefanos, Pei, Junchen, Perea, Angel, Petri, Marina, Piasetzky, Eli, Pietri, Stephane, Pirrone, Sara, Politi, Giuseppe, Pollacco, Emauel, Ponnath, Lukas, Potlog, Petru-Mihai, Prajapat, Rinku, Pritula, Roman, Qi, Hang, Rappold, Christophe, Reifarth, Rene, Revel, Aldric, Rhee, Han-Bum, Risitano, Fabio, Rodriguez Sanchez, Jose Luis, Rose, Luke, Rossi, Dominic, Rudigier, Matthias, Russotto, Paolo, Sánchez-Benítez, Ángel-Miguel, Sanjari, Shahab, Santamaria, Clementine, Sarantsev, Victor, Savran, Deniz, Scheidenberger, Christoph, Scheit, Heiko, Schmidt, Konrad, Simon, Haik, Simon, Johannes, Slavkovská, Zuzana, Slepnev, Roman, Sorlin, Olivier, Sousa, Tomás, Spiridon, Alexandra, Stan, Emil, Stanoiu, Mihai, Stefanescu, Alexandra, Stefanescu, Ionut, Storck-Dutine, Sonja, Stott, Aaron, Sun, Baohua, Sun, Yelei, Sürder, Christian, Taieb, Julien, Tanaka, Junki, Tanihata, Isao, Taniuchi, Ryo, Tengblad, Olof, Terekhin, Pavel, Teubig, Pamela, Törnqvist, Hans, Trache, Livius, Trautmann, Wolfgang, Trimarchi, Marina, Typel, Stefan, Uesaka, Tomohiro, Unsworth, Carl, Uvarov, Lev, Vandebrouck, Marine, Varga, Laszlo, Velardita, Simone, Velho, Paulo, Vencelj, Matjaz, Volknandt, Meiko, Volkov, Sergei, von Tresckow, Martin, Wagner, Andreas, Wamers, Felix, Wang, Yanzhao, Whitehead, Matthew, Wienholtz, Frank, Wimmer, Kathrin, Winkler, Martin, Xarepe, Manuel, Ye, Yanlin, Zacarias, Sabrina, Zamora Cardona, Juan Carlos, Zhang, Wei, Zhdanov, Andrei, Zhukov, Mikhail, Zilges, Andreas, Zuber, Kai, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), R3B, Federal Ministry of Education and Research (Germany), Helmholtz International Center for FAIR, Ministerio de Ciencia e Innovación (España), Xunta de Galicia, Agencia Estatal de Investigación (España), Swedish Research Council, Science and Technology Facilities Council (UK), Royal Society (UK), Projekt DEAL, Energy and Sustainability Research Institute Groni, and Nuclear Energy

Subjects
Nuclear and High Energy Physics, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Abstract

19 pags., 16 figs., 8 tabs., We present the design, prototype developments and test results of the new time-of-flight detector (ToFD) which is part of the R3B experimental setup at GSI and FAIR, Darmstadt, Germany. The ToFD detector is able to detect heavy-ion residues of all charges at relativistic energies with a relative energy precision σΔE/ ΔE of up to 1% and a time precision of up to 14 ps (sigma). Together with an elaborate particle-tracking system, the full identification of relativistic ions from hydrogen up to uranium in mass and nuclear charge is possible., This work received support from BMBF (05P19RFFN1, 05P15RDFN1, 05P19RDFN1) and HIC for FAIR. J.P. has been supported by the Institute for Basic Science (IBS-R031-D1). E.C. has been supported by the Ministry of Science and Innovation in Spain (PGC2018-099746-B-C22). J.L.R.S. thanks the support from the Regional Government of Galicia under the program of postdoctoral fellowships ED481B-2017-002 and ED481D-2021-018. O.T. has been supported by AEI/FEDER, UE project No. PID2019-104390GB-I00. G.B., A.H., H.T.J., B.J. and T.N. have been supported by the Swedish Research Council under contract 2017-03839. This work was supported by the Royal Society and UK STFC awards ST/L005727/1, ST/P003885/1.

Published
2022

9. Neutron transmission measurements at nELBE

Author

Junghans Arnd, Beyer Roland, ClauBner Jürgen, Kögler Toni, Urlass Sebastian, Bemmerer Daniel, Ferrari Anna, Schwengner Ronald, Wagner Andreas, Dietz Mirco, Frotscher Axel, Grieger Marcel, Hensel Thomas, Koppitz Martina, Ludwig Felix, Turkat Steffen, Nolte Ralf, Pirovano Elisa, Kopecky Stefan, Nyman Markus, Plompen Arjan, Schillebeeckx Peter, Borris Erik, Reifarth René, Veltum Daniel, Weigand Mario, Glorius Jan, Görres Joachim, Oberlack Uwe, and Wenz Daniel

Subjects
Physics, QC1-999
Abstract

Neutron total cross sections are an important source of experimental data in the evaluation of neutron-induced cross sections. The sum of all neutron-induced reaction cross sections can be determined with a precision of a few per cent in a relative measurement. The neutron spectrum of the photoneutron source nELBE extends in the fast region from about 100 keV to 10 MeV and has favourable conditions for transmission measurements due to the low instantaneous flux of neutrons and low gamma-flash background. Several materials of interest (in part included in the CIELO evaluation or on the HPRL of OECD/NEA) have been investigated: 197Au [1, 2], natFe [2], natW [2], 238U, natPt, 4He, natO, natNe, natXe. For gaseous targets high pressure gas cells with flat end-caps have been built that hold up to 200 bar pressure. The experimental setup will be presented including results from several transmission experiments and the data analysis leading to the total cross sections will be discussed.

Published
2020
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10. Felsenkeller 5 MV underground accelerator: Towards the Holy Grail of Nuclear Astrophysics 12C(α, γ)16O

Author

Bemmerer Daniel, Cowan Thomas E., Grieger Marcel, Hammer Sebastian, Hensel Thomas, Junghans Arnd R., Koppitz Martina, Ludwig Felix, Müller Stefan E., Rimarzig Bernd, Reinicke Stefan, Schwengner Ronald, Stöckel Klaus, Szücs Tamás, Takács Marcell P., Turkat Steffen, Wagner Andreas, Wagner Louis, and Zuber Kai

Subjects
Physics, QC1-999
Abstract

Low-background experiments with stable ion beams are an important tool for putting the model of stellar hydrogen, helium, and carbon burning on a solid experimental foundation. The pioneering work in this regard has been done by the LUNA collaboration at Gran Sasso, using a 0.4 MV accelerator. The present contribution reviews the status of the project for a higher-energy underground accelerator in Felsenkeller, Germany. Results from γ-ray, neutron, and muon background measurements in the Felsenkeller underground site in Dresden, Germany, show that the background conditions are satisfactory. Two tunnels of the Felsenkeller site have recently been refurbished for the installation of a 5MV high-current Pelletron accelerator. Civil construction work has completed in March 2018. The accelerator will provide intense, 50 μA, beams of 1H+, 4He+, and 12C+ ions, enabling research on astrophysically relevant nuclear reactions with unprecedented sensitivity.

Published
2018
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11. Neutron transmission measurements at nELBE.

Author

Junghans, Arnd, Beyer, Roland, ClauBner, Jürgen, Kögler, Toni, Urlass, Sebastian, Bemmerer, Daniel, Ferrari, Anna, Schwengner, Ronald, Wagner, Andreas, Dietz, Mirco, Frotscher, Axel, Grieger, Marcel, Hensel, Thomas, Koppitz, Martina, Ludwig, Felix, Turkat, Steffen, Nolte, Ralf, Pirovano, Elisa, Kopecky, Stefan, and Nyman, Markus

Subjects
NEUTRONS, NUCLEAR cross sections, MEASUREMENT, DATA analysis, NEUTRONS spectra
Abstract

Neutron total cross sections are an important source of experimental data in the evaluation of neutron-induced cross sections. The sum of all neutron-induced reaction cross sections can be determined with a precision of a few per cent in a relative measurement. The neutron spectrum of the photoneutron source nELBE extends in the fast region from about 100 keV to 10 MeV and has favourable conditions for transmission measurements due to the low instantaneous flux of neutrons and low gamma-flash background. Several materials of interest (in part included in the CIELO evaluation or on the HPRL of OECD/NEA) have been investigated: 197Au [1, 2], natFe [2], natW [2], 238U, natPt, 4He, natO, natNe, natXe. For gaseous targets high pressure gas cells with flat end-caps have been built that hold up to 200 bar pressure. The experimental setup will be presented including results from several transmission experiments and the data analysis leading to the total cross sections will be discussed. [ABSTRACT FROM AUTHOR]

Published
2022
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12. NeuLAND: The high-resolution neutron time-of-flight spectrometer for R3B at FAIR

Author

R3B collaboration, Boretzky, Konstanze, Gašparić, Igor, Heil, Michael, Mayer, Jan, Heinz, Andreas, Caesar, Christoph, Kresan, Dmytro, Simon, Haik, Törnqvist, Hans Toshihide, Körper, Daniel, Alkhazov, G. D., Atar, Leyla, Aumann, Thomas, Bemmerer, Daniel, Bondarev, S. V., Bott, Lukas T., Chakraborty, Santosh, Cherciu, Madalin I., Chulkov, Leonid V., Ciobanu, Mircea, Datta, Ushasi, De Filippo, Enrico, Douma, Christiaan, Dreyer, Jörn, Elekes, Zoltán, Enders, Joachim, Galaviz Redondo, Daniel, Geraci, Elena Irene, Gnoffo, Brunilde, Göbel, Kathrin, Golovtsov, Victor L., González-Díaz, Diégo, Gruzinsky, N., Heftrich, Tanja, Heggen, Henning, Hehner, Jörg, Hensel, Thomas, Hoemann, Elena, Holl, Matthias, Horvat, Andrea, Horváth, Ákos, Ickert, Günter, Jelavić-Malenica, Deša, Johansson, Håkan T., Jonson, Björn, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kelić-Heil, Aleksandra, Mathias, Kempe, Koch, Karsten, Kozlenko, Nikolai, Krivshich, Anatoly G., Kurz, Nikolaus, Kouznetsov, Viacheslav A., Langer, Christoph, Leifels, Yvonne, Lihtar, Ivana, Löher, Bastian, Machado, Jorge, Martorana, Nunzia Simona, Miki, Kenjiro, Nilsson, Thomas, Orischin, E. M., Pagano, Emanuele Vincenzo, Pirrone, Sara, Politi, Giuseppe, Potlog, Petru-Mihai, Rahaman, Anisur, Reifarth, René, Rigollet, Catherine, Röder, Marko, Rossi, Dominic M., Russotto, Paolo, Savran, Deniz, Scheit, Heiko, Schindler, Fabia, Stach, Daniel, Stan, Emil, Stomvall Gill, J., Teubig, Pamela, Trimarchi, Marina, Uvarov, Lev, Volknandt, Meiko, Volkov, S., Wagner, Andreas, Wagner, Vladimír, Wranne, Staffan, Yakorev, Dmitry, Zanetti, Lorenzo, Zilges, Andreas, Zuber, Kai, R3B collaboration, Boretzky, Konstanze, Gašparić, Igor, Heil, Michael, Mayer, Jan, Heinz, Andreas, Caesar, Christoph, Kresan, Dmytro, Simon, Haik, Törnqvist, Hans Toshihide, Körper, Daniel, Alkhazov, G. D., Atar, Leyla, Aumann, Thomas, Bemmerer, Daniel, Bondarev, S. V., Bott, Lukas T., Chakraborty, Santosh, Cherciu, Madalin I., Chulkov, Leonid V., Ciobanu, Mircea, Datta, Ushasi, De Filippo, Enrico, Douma, Christiaan, Dreyer, Jörn, Elekes, Zoltán, Enders, Joachim, Galaviz Redondo, Daniel, Geraci, Elena Irene, Gnoffo, Brunilde, Göbel, Kathrin, Golovtsov, Victor L., González-Díaz, Diégo, Gruzinsky, N., Heftrich, Tanja, Heggen, Henning, Hehner, Jörg, Hensel, Thomas, Hoemann, Elena, Holl, Matthias, Horvat, Andrea, Horváth, Ákos, Ickert, Günter, Jelavić-Malenica, Deša, Johansson, Håkan T., Jonson, Björn, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kelić-Heil, Aleksandra, Mathias, Kempe, Koch, Karsten, Kozlenko, Nikolai, Krivshich, Anatoly G., Kurz, Nikolaus, Kouznetsov, Viacheslav A., Langer, Christoph, Leifels, Yvonne, Lihtar, Ivana, Löher, Bastian, Machado, Jorge, Martorana, Nunzia Simona, Miki, Kenjiro, Nilsson, Thomas, Orischin, E. M., Pagano, Emanuele Vincenzo, Pirrone, Sara, Politi, Giuseppe, Potlog, Petru-Mihai, Rahaman, Anisur, Reifarth, René, Rigollet, Catherine, Röder, Marko, Rossi, Dominic M., Russotto, Paolo, Savran, Deniz, Scheit, Heiko, Schindler, Fabia, Stach, Daniel, Stan, Emil, Stomvall Gill, J., Teubig, Pamela, Trimarchi, Marina, Uvarov, Lev, Volknandt, Meiko, Volkov, S., Wagner, Andreas, Wagner, Vladimír, Wranne, Staffan, Yakorev, Dmitry, Zanetti, Lorenzo, Zilges, Andreas, and Zuber, Kai

Abstract

NeuLAND (New Large-Area Neutron Detector) is the next-generation neutron detector for the R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR (Facility for Antiproton and Ion Research). NeuLAND detects neutrons with energies from 100 to 1000 MeV, featuring a high detection efficiency, a high spatial and time resolution, and a large multi-neutron reconstruction efficiency. This is achieved by a highly granular design of organic scintillators: 3000 individual submodules with a size of 5 × 5 × 250 cm3 are arranged in 30 double planes with 100 submodules each, providing an active area of 250 × 250 cm2 and a total depth of 3 m. The spatial resolution due to the granularity together with a time resolution of 150 ps ensures high-resolution capabilities. In conjunction with calorimetric properties, a multi-neutron reconstruction efficiency of 50% to 70% for four-neutron events will be achieved, depending on both the emission scenario and the boundary conditions allowed for the reconstruction method. We present in this paper the final design of the detector as well as results from test measurements and simulations on which this design is based.

Published
2021

13. Neutron transmission measurements at nELBE

Author

ND 2019: International Conference on Nuclear Data for Science and Technology, Junghans, Arnd Rudolf, Beyer, Roland, Claußner, Jürgen, Kögler, Toni, Urlaß, Sebastian, Bemmerer, Daniel, Ferrari, Anna, Schwengner, Ronald, Wagner, Andreas, Dietz, Mirco, Frotscher, Axel, Grieger, Marcel, Hensel, Thomas, Koppitz, Martina, Ludwig, Felix, Turkat, Steffen, Nolte, Ralf, Pirovano, Elisa, Kopecky, Stefan, Nyman, Markus, Plompen, Arjan J. M., Schillebeeckx, Peter, Borris, Erik, Reifarth, René, Veltum, Daniel, Weigand, Mario, Glorius, Jan, Görres, Joachim, Oberlack, Uwe, Wenz, Daniel, ND 2019: International Conference on Nuclear Data for Science and Technology, Junghans, Arnd Rudolf, Beyer, Roland, Claußner, Jürgen, Kögler, Toni, Urlaß, Sebastian, Bemmerer, Daniel, Ferrari, Anna, Schwengner, Ronald, Wagner, Andreas, Dietz, Mirco, Frotscher, Axel, Grieger, Marcel, Hensel, Thomas, Koppitz, Martina, Ludwig, Felix, Turkat, Steffen, Nolte, Ralf, Pirovano, Elisa, Kopecky, Stefan, Nyman, Markus, Plompen, Arjan J. M., Schillebeeckx, Peter, Borris, Erik, Reifarth, René, Veltum, Daniel, Weigand, Mario, Glorius, Jan, Görres, Joachim, Oberlack, Uwe, and Wenz, Daniel

Abstract

Neutron total cross sections are an important source of experimental data in the evaluation of neutron-induced cross sections. The sum of all neutron-induced reaction cross sections can be determined with a precision of a few per cent in a relative measurement. The neutron spectrum of the photoneutron source nELBE extends in the fast region from about 100 keV to 10 MeV and has favourable conditions for transmission measurements due to the low instantaneous flux of neutrons and low gamma-flash background. Several materials of interest (in part included in the CIELO evaluation or on the HPRL of OECD/NEA) have been investigated: 197Au [1, 2], natFe [2], natW [2], 238U, natPt, 4He, natO, natNe, natXe. For gaseous targets high pressure gas cells with flat end-caps have been built that hold up to 200 bar pressure. The experimental setup will be presented including results from several transmission experiments and the data analysis leading to the total cross sections will be discussed.

Published
2020

14. Coulomb dissociation of 16O into 4He and 12C

Author

Göbel, Kathrin, primary, Heil, Michael, additional, Bott, Lukas, additional, Brandenburg, Leonard, additional, Caesar, Christoph, additional, Deuter, Isabell, additional, Grein, Alexander, additional, Keliç-Heil, Aleksandra, additional, Körper, Daniel, additional, Löher, Bastian, additional, Reifarth, René, additional, Savran, Deniz, additional, Schulte, Hendrik, additional, Simon, Haik, additional, Törnqvist, Hans, additional, Almusidi, Tahani, additional, Álvarez-Pol, Héctor, additional, Atkins, Liam, additional, Aumann, Thomas, additional, Bemmerer, Daniel, additional, Benlliure, José, additional, Boretzky, Konstanze, additional, Brückner, Benjamin, additional, Eiras, Pablo Cabanelas, additional, Casarejos, Enrique, additional, Cederkall, Joakim, additional, Chulkov, Leonid, additional, Cortina-Gil, Dolores, additional, Danilov, rey, additional, Erbacher, Philipp, additional, Rodriguez, Sonia Escribano, additional, Fülöp, Zsolt, additional, Falduto, Ashton, additional, Fiebiger, Stefan, additional, Gašparić, Igor, additional, Borge, Maria José Garcia, additional, Gernhäuser, Roman, additional, Glorius, Jan, additional, Caamaño, David Gonzales, additional, Hartig, Anna-Lena, additional, Heftrich, Tanja, additional, Heggen, Henning, additional, Heine, Marcel, additional, Heinz, reas, additional, Hensel, Thomas, additional, Holl, Matthias, additional, Johansson, Håkan T., additional, Jonson, Björn, additional, Kalantar-Nayestanaki, Nasser, additional, Kamenyero, Armel, additional, Khasawneh, Kafa, additional, Kiselev, Oleg, additional, Klenze, Philipp, additional, Kohls, Marvin, additional, Kröll, Thorsten, additional, Kresan, Dmytro, additional, Kurtulgil, Deniz, additional, Kurz, Nikolaus, additional, Langer, Christoph, additional, Lehr, Christopher, additional, Litvinov, Yuri, additional, Lorenz, Enis, additional, Morales, Silvia Murillo, additional, Nacher, Enrique, additional, Nilsson, Thomas, additional, Park, Joochun, additional, Paschalis, Stefanos, additional, Perea, Angel, additional, Petri, Marina, additional, Plag, Ralf, additional, Ponnath, Lukas, additional, Popocovski, Romana, additional, Reich, Markus, additional, Rhee, Han-Bum, additional, Sanchez, Jose Luis Rodriguez, additional, Rossi, Dominic, additional, Scheit, Heiko, additional, Schmidt, Konrad, additional, Slavkovská, Zuzana, additional, Starostin, Viktor, additional, Storck, Sonja, additional, Sürder, Christian, additional, Tanaka, Junki, additional, Tengblad, Olof, additional, Thomas, Benedikt, additional, Typel, Stefan, additional, Varga, László, additional, Volk, Klaus, additional, Volknandt, Meiko, additional, Wagner, Vadim, additional, Wamers, Felix, additional, Weigand, Mario, additional, and Zanetti, Lorenzo, additional

Published
2020
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15. Game laboratory studies

Author

Beil, Benjamin, Hensel, Thomas, Schröter, Jens, Bojahr, Philipp, Gläser, Tobias, Schröer, Lars, Hofmann, Gisa, Schleicher, Marlene, Brandt, Torsten, Meinrenken, Jens, Nobis, Nicolai, Urrigshardt, Frank, Förster, Julia, Reinhardt, Annika, Binay, Berk, Heidrich, Andreas, Zöller, Christian, Bienia, Rafael, Blech, Xenia, Hense, Jaro, Henkenjohann, Meike, Hofmann, Philipp, Schneider, Sarah, Petzinger, Philipp, Clüver, Claudius, Häsler, Leonie, Karidas, Alexander, Trapp, Christian, Lorber, Martin, Beil, Benjamin (Hrsg.), and Hensel, Thomas (Hrsg.)

Subjects
Game Studies, ddc:793, Indoor games and amusements, Computerspiel, Programmierung
Abstract

Um die Analyse von Computerspielen aus produktionsästhetischer Perspektive zu erproben, lehnt sich der vorliegende Band an die Akteur-Netzwerk-Theorie (ANT) an. Mit ihr geht es ihm um die Frage nach den Aktanten des Game Design – etwa: Welche Hard- und Softwarekomponenten kommen wann und wofür zum Einsatz; wie und mittels welcher Medien notieren Level-Designer ihre Ideen, und wie werden die Aufzeichnungen später von Programmierern implementiert; und welche Rolle spielt eigentlich eine Action-Figur auf dem Schreibtisch eines Textur-Artists?

Published
2015

17. 'Allein machen sie dich ein' – Soziale Arbeit und Gewerkschaften: Begründungen, Formen und Perspektiven gewerkschaftlichorganisierter Sozialer Arbeit

Author

Hensel, Thomas, Ahrens, Daniela, Markert, Andreas, and Hochschule Zittau/Görlitz

Subjects
ddc:360, ddc:300, unions, social work, gainful employment, Gewerkschaften, Soziale Arbeit, Erwerbstätigkeit
Abstract

Soziale Arbeit als Erwerbstätigkeit und Sozialarbeiter_innen als lohnabhängige Beschäftigte zu betrachten, wird in Zeiten schwindender Tarifbindung sozialer Träger und der damit einhergehenden Prekarisierung und Deprofessionalisierung Sozialer Arbeit immer notwendiger. Gesellschaftliche, politische und wirtschaftliche Entwicklungen führen in das Thema ein und leiten zur Darstellung der Prekarisierungstendenzen Sozialer Arbeit als Erwerbstätigkeit und als Profession über. Daran anschließend wird der aktuelle Zustand gewerkschaftlicher Organisiertheit der Sozialen Arbeit und ihrer Fachkräfte dargestellt. Hauptschwerpunkt der Arbeit ist es, zu analysieren, warum Soziale Arbeit und Gewerkschaften in nur geringem Bezug zueinander stehen und warum Soziale Arbeit gewerkschaftlich nur marginal organisiert und repräsentiert ist. Fach- und tarifpolitische Interessen Sozialer Arbeit als Profession und als Erwerbstätigkeit gilt es in ihren Interdependenzen zu verstehen, nicht zuletzt, um die gewerkschaftliche Repräsentation Sozialer Arbeit und ihrer Fachkräfte zu erhöhen – im Sinne einer fachlich hochwertigen und professionellen Sozialen Arbeit.

Published
2015

18. I AM ERROR : Störungen des Computerspiels

Author

Rautzenberg, Markus, Wolfsteiner, Andreas, Bojahr, Philipp, Schwingeler, Stephan, Beil, Benjamin, Hensel, Thomas, and Beil, Benjamin (Hrsg.) ...

Subjects
Medientheorie, ddc:793, Indoor games and amusements, Computerspiel, World of Warcraft
Abstract

Für die Medientheorie erweisen sich Phänomene der Störung spätestens dann als besonders bedeutsam, wenn sie nicht mehr nur als Un- oder Zufälle ansonsten ›reibungslos‹ verlaufender medientechnischer Prozesse gedeutet, sondern als integraler Bestandteil von Medialität selbst begriffen werden können. Von Martin Heideggers »Zeug«-Analysen bis zu Michel Serres‘ »Parasitologie« ist Störung mit und gegen das kommunikationstheoretische Paradigma als jenes Element beschrieben worden, anhand dessen sich die materielle Eigensinnigkeit der Medien selbst beobachten lässt und das damit den Blick auf Dynamiken von Medialität jenseits der Funktionsweise technischer Artefakte lenkt. Dies ist einer der zentralen Ansatzpunkte aktueller Medientheorie, die hoffen kann, aufgrund des Explikationspotenzials des Störungsphänomens den Begriff des Medialen schärfer konturieren zu können.

Published
2015

19. Felsenkeller 5 MV underground accelerator: Towards the Holy Grail of Nuclear Astrophysics 12C(α,γ)16O.

Author

Bemmerer, Daniel, Cowan, Thomas E., Grieger, Marcel, Hammer, Sebastian, Hensel, Thomas, Junghans, Arnd R., Koppitz, Martina, Ludwig, Felix, Müller, Stefan E., Rimarzig, Bernd, Reinicke, Stefan, Schwengner, Ronald, Stöckel, Klaus, Szücs, Tamás, Takács, Marcell P., Turkat, Steffen, Wagner, Andreas, Wagner, Louis, and Zuber, Kai

Subjects
ION beams, ASTROPHYSICS, NUCLEAR reactions, NEUTRON spectroscopy, ION accelerators
Abstract

Low-background experiments with stable ion beams are an important tool for putting the model of stellar hydrogen, helium, and carbon burning on a solid experimental foundation. The pioneering work in this regard has been done by the LUNA collaboration at Gran Sasso, using a 0.4 MV accelerator. The present contribution reviews the status of the project for a higher-energy underground accelerator in Felsenkeller, Germany. Results from γ-ray, neutron, and muon background measurements in the Felsenkeller underground site in Dresden, Germany, show that the background conditions are satisfactory. Two tunnels of the Felsenkeller site have recently been refurbished for the installation of a 5MV high-current Pelletron accelerator. Civil construction work has completed in March 2018. The accelerator will provide intense, 50 μA, beams of 1H+, 4He+, and 12C+ ions, enabling research on astrophysically relevant nuclear reactions with unprecedented sensitivity. [ABSTRACT FROM AUTHOR]

Published
2018
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21. „Allein machen sie dich ein“ – Soziale Arbeit und Gewerkschaften: Begründungen, Formen und Perspektiven gewerkschaftlichorganisierter Sozialer Arbeit

Author

Ahrens, Daniela, Markert, Andreas, Hochschule Zittau/Görlitz, Hensel, Thomas, Ahrens, Daniela, Markert, Andreas, Hochschule Zittau/Görlitz, and Hensel, Thomas

Abstract

Soziale Arbeit als Erwerbstätigkeit und Sozialarbeiter_innen als lohnabhängige Beschäftigte zu betrachten, wird in Zeiten schwindender Tarifbindung sozialer Träger und der damit einhergehenden Prekarisierung und Deprofessionalisierung Sozialer Arbeit immer notwendiger. Gesellschaftliche, politische und wirtschaftliche Entwicklungen führen in das Thema ein und leiten zur Darstellung der Prekarisierungstendenzen Sozialer Arbeit als Erwerbstätigkeit und als Profession über. Daran anschließend wird der aktuelle Zustand gewerkschaftlicher Organisiertheit der Sozialen Arbeit und ihrer Fachkräfte dargestellt. Hauptschwerpunkt der Arbeit ist es, zu analysieren, warum Soziale Arbeit und Gewerkschaften in nur geringem Bezug zueinander stehen und warum Soziale Arbeit gewerkschaftlich nur marginal organisiert und repräsentiert ist. Fach- und tarifpolitische Interessen Sozialer Arbeit als Profession und als Erwerbstätigkeit gilt es in ihren Interdependenzen zu verstehen, nicht zuletzt, um die gewerkschaftliche Repräsentation Sozialer Arbeit und ihrer Fachkräfte zu erhöhen – im Sinne einer fachlich hochwertigen und professionellen Sozialen Arbeit.

Published
2015

22. Synthesis and properties of unsymmetrical azatrioxa[8]circulenes

Author

Plesner, Malene, Hensel, Thomas, Nielsen, Bjarne Enrico, Kamounah, Fadhil S, Brock-Nannestad, Theis, Nielsen, Christian Benedikt, Tortzen, Christian, Hammerich, Ole, Pittelkow, Michael, Plesner, Malene, Hensel, Thomas, Nielsen, Bjarne Enrico, Kamounah, Fadhil S, Brock-Nannestad, Theis, Nielsen, Christian Benedikt, Tortzen, Christian, Hammerich, Ole, and Pittelkow, Michael

Published
2015

24. Das Bild im Spannrahmen

Author

Hensel, Thomas

Subjects
ddc:050, Bild, Wissenschaft, Visualisierung
Published
2011

28. Bildende Kunst

Author

Hensel, Thomas, Hofmann, Gisa, and Schleicher, Marlene

Subjects
Kunsttheorie, Game Studies, Bildende Kunst, Game Design, Kunstgeschichte
Published
2011

29. Post-It

Author

Hensel, Thomas

Subjects
Schriftlichkeit, Notizen, Game Design, Fragmentierung
Published
2011

30. Diagramm

Author

Hensel, Thomas

Subjects
Relationalität, GOD OF WAR, Game Design
Published
2011

34. Aperspektive als symbolische Form. Eine Annäherung

Author

Hensel, Thomas

Subjects
fine arts, one-point perspective, perspective, Marshall McLuhan, Erwin Panofsky, Jean Gebser, Perspektive, Zentralperspektive, Bildende Kunst, art history, TRINITÄT, Kunstgeschichte, DIE GESANDTEN
Abstract

Reflektiert ungewöhnliche Perspektiven in der Bildenden Kunst., It will provide a historic view on the beginnings of unusual perspectives within the fine arts.

Published
2005

36. Azatrioxa[8]circulenes:planar anti-aromatic cyclooctatetraenes

Author

Nielsen, Christian Benedikt, Brock-Nannestad, Theis, Hammershøj, Peter, Reenberg, Theis, Schau-Magnussen, Magnus, Trpcevski, Denis, Hensel, Thomas, Salcedo, Roberto, Baryshnikov, Gleb V., Minaev, Boris F., Pittelkow, Michael, Nielsen, Christian Benedikt, Brock-Nannestad, Theis, Hammershøj, Peter, Reenberg, Theis, Schau-Magnussen, Magnus, Trpcevski, Denis, Hensel, Thomas, Salcedo, Roberto, Baryshnikov, Gleb V., Minaev, Boris F., and Pittelkow, Michael

Published
2013

37. Diazadioxa[8]circulenes:planar antiaromatic cyclooctatetraenes

Author

Hensel, Thomas, Trpcevski, Denis, Lind, Christopher, Grosjean, Rémi, Hammershøj, Peter, Nielsen, Christian Benedikt, Brock-Nannestad, Theis, Nielsen, Bjarne Enrico, Schau-Magnussen, Magnus, Minaev, Boris, Baryshnikov, Gleb V., Pittelkow, Michael, Hensel, Thomas, Trpcevski, Denis, Lind, Christopher, Grosjean, Rémi, Hammershøj, Peter, Nielsen, Christian Benedikt, Brock-Nannestad, Theis, Nielsen, Bjarne Enrico, Schau-Magnussen, Magnus, Minaev, Boris, Baryshnikov, Gleb V., and Pittelkow, Michael

Abstract

In this paper we describe a new class of antiaromatic planar cyclooctatetraenes: the diazadioxa[8]circulenes. The synthesis was achieved by means of a new acid-mediated oxidative dimerization of 3,6-dihydroxycarbazoles to yield the diazadioxa[8]circulenes in high yields. The synthetic protocol appears to be general, and is a one-pot transformation in which two CC bonds and two CO bonds are formed with the loss of two molecules of water. We also present a detailed characterization of the optical and electrochemical properties of this new class of stable planar cyclooctatetraenes. The properties of the diazadioxa[8]circulenes are compared with the properties of isoelectronic tetraoxa[8]circulenes and azatrioxa[8]circulenes. We discuss the antiaromatic nature of the planar central cyclooctatetraene moiety. The antiaromatic nature of the planar cyclooctatetraenes was studied by using computational methods (NICS calculations), and these calculations reveal that the central eight-membered ring has antiaromatic character.

Published
2013

38. Hensel, Thomas

Author

Hensel, Thomas and Hensel, Thomas

Published
2012

46. »Now let’s continue testing«. ›Portal‹ and the Rat in a Maze

Author

Nohr, Rolf F., Hensel, Thomas, and Universitäts- und Landesbibliothek Münster

Subjects
lcsh:Language and Literature, Game Studies, Test, Kontrollgesellschaft, 800 Literatur, Rhetorik, Literaturwissenschaft, Gamification, PORTAL, Testierung, Kulturtechnik, THE STANLEY PARABLE, lcsh:P, Literature (Belles-lettres) and rhetoric, ddc:800
Abstract

Spiele der Portal-Reihe und The Stanley Parable variieren Prinzipien der gamification und inszenieren die permanente Testierung eines spielenden Subjekts als eine ›Allegorie‹ auf das Spielen als Kulturtechnik. Der Artikel liest diese Kulturtechnik als Fortführung experimenteller und ideologischer Konditionierung und zeigt, wie diese diskursive Mechanismen einer Kontrollgesellschaft abbilden.

Published
2017
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48. »The cake is a lie!« Polyperspektivische Betrachtungen des Computerspiels am Beispiel von PORTAL

Author

Hensel, Thomas

Subjects
Hermeneutik, Game Studies, Analyse, PORTAL
Abstract

Der vorliegende Band geht von zwei Prämissen aus: zum einen, dass sich ein Interpretationsansatz besonders gut begreifen lässt, wenn er an einem konkreten Beispiel erprobt wird, und zum anderen, dass sich unterschiedliche Interpretationsansätze besonders gut miteinander vergleichen lassen, wenn sie auf ein einziges Objekt bezogen werden. Diese innerhalb der Game Studies kaum gebräuchliche Form von doing theory vermag in der Lektüre verschiedener Analysen erfahrbar zu machen, dass sich die Komplexität gerade des Computerspiels nicht hinreichend aus nur einer Perspektive interpretieren lässt. Zusammengenommen zeigen die hier versammelten Beiträge den Ertrag wie auch die zwangsläufige Unvollständigkeit einer Einzelanalyse auf und betonen die Stärken einer vielstimmigen Interpretation. Exemplarische Objekte der Analyse und dieser hermeneutischen Haltung kongenial sind Portal und Portal 2. Um beide Spiele erfassen zu können, müssen immer wieder verschiedene analytische Ansätze ineinanderspielen, und Übergänge, die sich zwischen diesen eröffnen, machen erkennbar, dass sich einzelne Herangehensweisen nicht verabsolutieren lassen. Damit lässt sich der vorliegende Band sowohl als ein Beitrag zu den Game Studies verstehen, der die Bedeutung und Reichweite von Interpretationsansätzen betont, die unterschiedlichen Disziplinen und Methoden verpflichtet sind, als auch als Kompendium zu Portal, das mannigfaltige Reflexionen über eines der berühmtesten Computerspiele überhaupt bündelt., Britta Neitzel: Game Studies mit PORTAL Philipp Fust: PORTAL und PORTAL 2 – Eine Einführung Bilder und Räume Jennifer deWinter / Carly A. Kocurek: Chell Game: Representation, Identification, and Racial Ambiguity in PORTAL and PORTAL 2 Markus Rautzenberg: Just Making Images. Evozierte Bildlichkeit in Computerspielen Marc Bonner: Aperchitecture. Interferierende Architektur- und Raumkonzepte als Agens der Aperture Sciences Inc. Stefan Höltgen: JUMPs durch exotische Zonen. Portale, Hyperräume und Teleportation in Computern und Computerspielen Thomas Hensel: »Know your paradoxes!« Das Computerspiel als multistabiles Bild. Mit einem Post Scriptum zur Genretheorie Lernen, Lehren und Testen Niklas Schrape: PORTAL als Experimentalsystem Gunnar Sandkühler: Unzuverlässige Instruktion als Herausforderung – die Unsicherheiten in PORTAL als ironische Fortführung programmierten Lernens Rolf F. Nohr: »Now let’s continue testing«. PORTAL and the Rat in a Maze Verbindungen Benjamin Beil: Life Is a Test (Chamber) – spielerische Metaphern der PORTAL-Reihe Arne Schröder: The Cake is a Song – Zur Verbindung von Klang und Raum in PORTAL Michelle E. Ouellette / Marc A. Ouellette: Make Lemonade: The Pleasantly Unpleasant Aesthetics of Playing PORTAL Andreas Rauscher: Beyond 2001 – PORTAL als Spatial Odyssey Mechaniken Tobias Gläser / Timo Schemer-Reinhard: You Made Your Point: Achievements als Medien medialer Selbstreflexivität Greg Grewell et al.: »You Really Do Have Brain-Damage, Don’t You?«: Ridicule as Game Mechanic in the PORTAL-Series Felix Raczkowski: Thinking with Portals – das Aperture Science Handheld Portal Device zwischen Unit Operation und Spielzeug

Published
2015

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