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362 results on '"C. Höhne"'

1. Measurement of global polarization of Λ hyperons in few-GeV heavy-ion collisions

Author: R. Abou Yassine, J. Adamczewski-Musch, C. Asal, M. Becker, A. Belounnas, A. Blanco, C. Blume, L. Chlad, P. Chudoba, I. Ciepał, M. Cordts, J. Dreyer, W.A. Esmail, L. Fabbietti, H. Floersheimer, P. Fonte, J. Friese, I. Fröhlich, J. Förtsch, T. Galatyuk, T. Gniazdowski, R. Greifenhagen, M. Grunwald, M. Gumberidze, S. Harabasz, T. Heinz, C. Höhne, F. Hojeij, R. Holzmann, H. Huck, M. Idzik, B. Kämpfer, K-H. Kampert, B. Kardan, V. Kedych, I. Koenig, W. Koenig, M. Kohls, J. Kolas, G. Kornakov, R. Kotte, I. Kres, W. Krueger, A. Kugler, R. Lalik, S. Lebedev, S. Linev, F. Linz, L. Lopes, M. Lorenz, A. Malige, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, A. Molenda, C. Müntz, M. Nabroth, L. Naumann, K. Nowakowski, J. Orliński, J.-H. Otto, M. Parschau, C. Pauly, V. Pechenov, O. Pechenova, D. Pfeifer, K. Piasecki, J. Pietraszko, T. Povar, A. Prozorov, W. Przygoda, K. Pysz, B. Ramstein, N. Rathod, J. Ritman, P. Rodriguez-Ramos, A. Rost, A. Rustamov, P. Salabura, J. Saraiva, N. Schild, E. Schwab, F. Scozzi, F. Seck, I. Selyuzhenkov, U. Singh, L. Skorpil, J. Smyrski, S. Spies, M.S. Stefaniak, H. Ströbele, J. Stroth, K. Sumara, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, V. Wagner, M. Wasiluk, A.A. Weber, C. Wendisch, J. Wirth, H.P. Zbroszczyk, E. Zherebtsova, M. Zielinski, and P. Zumbruch
Subjects: Physics, QC1-999
Abstract: The global polarization of Λ hyperons along the total orbital angular momentum of a relativistic heavy-ion collision is presented based on the high statistics data samples collected in Au+Au collisions at sNN=2.4 GeV and Ag+Ag at 2.55 GeV with the High-Acceptance Di-Electron Spectrometer (HADES) at GSI, Darmstadt. This is the first measurement below the strangeness production threshold in nucleon-nucleon collisions. Results are reported as a function of the collision centrality as well as a function of the hyperon's transverse momentum (pT) and rapidity (yCM) for the range of centrality 0–40%. We observe a strong centrality dependence of the polarization with an increasing signal towards peripheral collisions. For mid-central (20 – 40%) collisions the polarization magnitudes are 〈PΛ〉(%)=6.8±1.3(stat.)±2.1(syst.) for Au+Au and 〈PΛ〉(%)=6.2±0.4(stat.)±0.6(syst.) for Ag+Ag, which are the largest values observed so far. This observation thus provides a continuation of the increasing trend previously observed by STAR and contrasts expectations from recent theoretical calculations predicting a maximum in the region of collision energies about 3 GeV. The observed polarization is of a similar magnitude as predicted by 3D-fluid-dynamics and the UrQMD plus thermal vorticity model and significantly above results from the AMPT model.
Published: 2022
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2. Correlated pion-proton pair emission off hot and dense QCD matter

Author: J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, I. Ciepał, C. Deveaux, J. Dreyer, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, M. Kohls, B.W. Kolb, G. Korcyl, G. Kornakov, F. Kornas, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Malige, A. Mangiarotti, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, K. Piasecki, J. Pietraszko, W. Przygoda, K. Pysz, S. Ramos, B. Ramstein, N. Rathod, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, U. Singh, J. Smyrski, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, D. Wójcik, Y. Zanevsky, and P. Zumbruch
Subjects: Baryonic resonances, Heavy-ion reactions, Freezeout, Physics, QC1-999
Abstract: In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at sNN=2.42 GeV collected with HADES. In this energy regime the population of Δ(1232) resonances plays an important role in the way energy is distributed between intrinsic excitation energy and kinetic energy of the hadrons in the fireball. The triple differential d3N/dMπ±pdpTdy distributions of correlated π±p pairs have been determined by subtracting the πp combinatorial background using an iterative method. The invariant-mass distributions in the Δ(1232) mass region show strong deviations from a Breit-Wigner function with vacuum width and mass. The yield of correlated pion-proton pairs exhibits a complex isospin, rapidity and transverse-momentum dependence. In the invariant mass range 1.1
Published: 2021
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3. Identical pion intensity interferometry in central Au+Au collisions at 1.23A GeV

Author: J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, K. Piasecki, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, D. Wójcik, Y. Zanevsky, and P. Zumbruch
Subjects: Physics, QC1-999
Abstract: We investigate identical pion HBT intensity interferometry in central Au+Au collisions at 1.23A GeV. High-statistics π−π− and π+π+ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.
Published: 2019
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4. Sub-threshold production of Ks0 mesons and Λ hyperons in Au+Au collisions at sNN=2.4 GeV

Author: J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, Y. Zanevsky, P. Zumbruch, and Y. Leifels
Subjects: Physics, QC1-999
Abstract: We present first data on sub-threshold production of Ks0 mesons and Λ hyperons in Au+Au collisions at sNN=2.4 GeV. We observe an universal 〈Apart〉 scaling of hadrons containing strangeness, independent of their corresponding production thresholds. Comparing the yields, their 〈Apart〉 scaling, and the shapes of the rapidity and the pt spectra to state-of-the-art transport model (UrQMD, HSD, IQMD) predictions, we find that none of them can simultaneously describe these observables with reasonable χ2 values.
Published: 2019
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5. Σ0 production in proton nucleus collisions near threshold

Author: J. Adamczewski-Musch, G. Agakishiev, O. Arnold, E.T. Atomssa, C. Behnke, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, C. Deveaux, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, K. Gill, M. Golubeva, F. Guber, M. Gumberidze, S. Harabasz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, M. Jurkovic, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Krása, E. Krebs, H. Kuc, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, S. Maurus, A. Mangiarotti, J. Markert, V. Metag, J. Michel, C. Müntz, R. Münzer, L. Naumann, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, V. Petousis, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, L. Rehnisch, A. Reshetin, A. Rost, A. Rustamov, A. Sadovsky, P. Salabura, T. Scheib, K. Schmidt-Sommerfeld, H. Schuldes, P. Sellheim, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, H. Tsertos, T. Vasiliev, V. Wagner, C. Wendisch, J. Wirth, J. Wüstenfeld, Y. Zanevsky, and P. Zumbruch
Subjects: Physics, QC1-999
Abstract: The production of Σ0 baryons in the nuclear reaction p (3.5 GeV) + Nb (corresponding to sNN=3.18 GeV) is studied with the detector set-up HADES at GSI, Darmstadt. Σ0s were identified via the decay Σ0→Λγ with subsequent decays Λ→pπ− in coincidence with a e+e− pair from either external (γ→e+e−) or internal (Dalitz decay γ⁎→e+e−) gamma conversions. The differential Σ0 cross section integrated over the detector acceptance, i.e. the rapidity interval 0.5
Published: 2018
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6. Deep sub-threshold ϕ production in Au+Au collisions

Author: J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, W. Kühn, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K.N. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, Y. Zanevsky, and P. Zumbruch
Subjects: Physics, QC1-999
Abstract: We present data on charged kaons (K±) and ϕ mesons in Au(1.23A GeV)+Au collisions. It is the first simultaneous measurement of K− and ϕ mesons in central heavy-ion collisions below a kinetic beam energy of 10A GeV. The ϕ/K− multiplicity ratio is found to be surprisingly high with a value of 0.52±0.16 and shows no dependence on the centrality of the collision. Consequently, the different slopes of the K+ and K− transverse-mass spectra can be explained solely by feed-down, which substantially softens the spectra of K− mesons. Hence, in contrast to the commonly adapted argumentation in literature, the different slopes do not necessarily imply diverging freeze-out temperatures of K+ and K− mesons caused by different couplings to baryons.
Published: 2018
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7. Model Guidance via Explanations Turns Image Classifiers into Segmentation Models.

Author: Xiaoyan Yu, Jannik Franzen, Wojciech Samek, Marina M.-C. Höhne, and Dagmar Kainmueller
Published: 2024
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8. A Fresh Look at Sanity Checks for Saliency Maps.

Author: Anna Hedström, Leander Weber, Sebastian Lapuschkin, and Marina M.-C. Höhne
Published: 2024
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9. Deep Learning-based UAV-assisted grassland monitoring to facilitate Eco-scheme 5 realization.

Author: Deepak Hanike Basavegowda, Marina M.-C. Höhne, and Cornelia Weltzien
Published: 2024

10. Explainable AI in grassland monitoring: Enhancing model performance and domain adaptability.

Author: Shanghua Liu, Anna Hedström, Deepak Hanike Basavegowda, Cornelia Weltzien, and Marina M.-C. Höhne
Published: 2024

11. Finding Spurious Correlations with Function-Semantic Contrast Analysis.

Author: Kirill Bykov, Laura Kopf, and Marina M.-C. Höhne
Published: 2023
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12. Mark My Words: Dangers of Watermarked Images in ImageNet.

Author: Kirill Bykov, Klaus-Robert Müller, and Marina M.-C. Höhne
Published: 2023
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13. Kidnapping Deep Learning-based Multirotors using Optimized Flying Adversarial Patches.

Author: Pia Hanfeld, Khaled Wahba, Marina M.-C. Höhne, Michael Bussmann, and Wolfgang Hönig
Published: 2023
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14. Demonstrating the Risk of Imbalanced Datasets in Chest X-Ray Image-Based Diagnostics by Prototypical Relevance Propagation.

Author: Srishti Gautam, Marina M.-C. Höhne, Stine Hansen, Robert Jenssen, and Michael Kampffmeyer
Published: 2022
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15. NoiseGrad - Enhancing Explanations by Introducing Stochasticity to Model Weights.

Author: Kirill Bykov, Anna Hedström, Shinichi Nakajima, and Marina M.-C. Höhne
Published: 2022
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16. Labeling Neural Representations with Inverse Recognition.

Author: Kirill Bykov, Laura Kopf, Shinichi Nakajima, Marius Kloft, and Marina M.-C. Höhne
Published: 2023

17. ProtoVAE: A Trustworthy Self-Explainable Prototypical Variational Model.

Author: Srishti Gautam, Ahcène Boubekki, Stine Hansen, Suaiba Amina Salahuddin, Robert Jenssen, Marina M.-C. Höhne, and Michael Kampffmeyer
Published: 2022

18. Postoperative Übelkeit und Erbrechen – Handlungsempfehlungen zur Prävention und Therapie bei Kindern

Author: T. Schlesinger, K. Becke-Jakob, C. B. Eich, U. Gottschaldt, F. J. Kretz, J. Krösche, P. Kranke, and C. Höhne
Published: 2023

19. CAD/CAM-gefertigte individuelle dentale Implantate

Author: C. Höhne and M. Schmitter
Published: 2022

20. [Postoperative nausea and vomiting-recommendations for its prevention and therapy in paediatric medicine]

Author: T, Schlesinger, K, Becke-Jakob, C B, Eich, U, Gottschaldt, F J, Kretz, J, Krösche, P, Kranke, and C, Höhne
Abstract: Post-operative nausea and/or vomiting (PONV/POV) are among the biggest problems occurring in the paediatric recovery room and in the course of the following post-operative period. Apart from pain and emergence delirium, PONV is one of the main causes of post-operative discomfort in children. The DGAI Scientific Working Group on Paediatric Anaesthesia already worked out recommendations for the prevention and treatment of PONV in children years ago. These recommendations have now been revised by a team of experts, the current literature has been reviewed, and evidence-based core recommendations have been consented. Key elements of the new recommendations consist of effective individual measures for prevention and therapy, next to the implementation of a fixed dual prophylaxis in the clinical routine applicable to all children ≥ 3 years of age.Postoperative Übelkeit und/oder Erbrechen (postoperative nausea and vomiting, PONV/POV) gehören zu den großen Problemen im Kinder-Aufwachraum und in der weiteren postoperativen Phase. Neben Schmerzen und Emergence Delir ist PONV eine der Hauptursachen für postoperatives Unbehagen bei Kindern. Der Wissenschaftliche Arbeitskreis Kinderanästhesie der DGAI hat bereits vor Jahren eine Handlungsempfehlung zur Prävention und Therapie von PONV bei Kindern erarbeitet. Diese Empfehlung wurde nun von einem Expertenteam überarbeitet, die aktuelle Literatur gesichtet und evidenzbasierte Kernempfehlungen konsentiert. Schlüsselelemente der neuen Handlungsempfehlung sind wirksame Einzelmaßnahmen zu Prävention und Therapie sowie die Implementierung einer fixen Zweifachprophylaxe in die klinische Routine bei allen Kindern ≥ 3 Jahren.
Published: 2023

21. S1-Leitlinie: Obstruktive Schlafapnoe im Rahmen von Tonsillenchirurgie mit oder ohne Adenotomie bei Kindern – perioperatives Management

Author: T. Deitmer, C. Höhne, C. Goeters, B. A. Stuck, G. Badelt, A. Wiater, C. Eich, and K. Becke-Jakob
Subjects: Gynecology, medicine.medical_specialty, Perioperative management, business.industry, medicine.medical_treatment, Context (language use), Guideline, medicine.disease, Obstructive sleep apnea, 03 medical and health sciences, Plastic surgery, 0302 clinical medicine, Otorhinolaryngology, Adenoidectomy, Physiology (medical), 030220 oncology & carcinogenesis, medicine, Tonsil surgery, 030223 otorhinolaryngology, business
Abstract: Operationen aus dem Fachgebiet der Hals-Nasen-Ohren-Heilkunde zahlen zu den haufigsten operativen Eingriffen im Kindesalter. Die Tonsillenchirurgie mit oder ohne Adenotomie aufgrund einer adenotonsillaren Hyperplasie mit Obstruktion der oberen Atemwege in Kombination mit oder ohne Beluftungsstorung des Mittelohrs ist bei diesen Eingriffen fuhrend. Kinder mit obstruktiver Schlafapnoe (OSA) haben hierbei ein deutlich erhohtes Risiko, perioperativ respiratorische Komplikationen zu erleiden. Es wurde uber Todesfalle und bleibende neurologische Schaden aufgrund von Apnoe und einer erhohten Opioidsensibilitat berichtet. Die vorliegende Leitlinie stellt einen risikoadjustierten pragmatischen Ansatz dar. Patienten mit bestatigter oder vermuteter OSA sollen perioperativ entsprechend ihren individuellen Risiken und Bedurfnissen behandelt und uberwacht werden, um schwere bleibende Schaden zu verhindern.
Published: 2020

22. Radiation hardness of Hamamatsu H12700/H8500 MAPMTs, entrance glass windows, and p-terphenyl wavelength shifting coating under neutron and 60Co gamma irradiation

Author: C. Pauly, T. Mahmoud, M. Dürr, J. Eschke, J. Förtsch, J. Heep, D. Pfeifer, C. Höhne, and K.-H. Kampert
Subjects: Nuclear and High Energy Physics, Instrumentation
Published: 2022

23. DeepCOMBI: explainable artificial intelligence for the analysis and discovery in genome-wide association studies

Author: Alexandre Rozier, Juan Antonio Rodríguez, Klaus-Robert Müller, Marina M.-C. Höhne, Bettina Mieth, and Nico Görnitz
Subjects: AcademicSubjects/SCI01140, AcademicSubjects/SCI01060, Computer science, AcademicSubjects/SCI00030, Genome-wide association study, Standard Article, AcademicSubjects/SCI01180, 03 medical and health sciences, Structural Biology, Genetics, Relevance (information retrieval), Baseline (configuration management), Molecular Biology, 030304 developmental biology, 0303 health sciences, Interpretation (logic), Artificial neural network, business.industry, Applied Mathematics, Deep learning, 030302 biochemistry & molecular biology, Thresholding, Computer Science Applications, Embodied cognition, Multiple comparisons problem, Artificial intelligence, AcademicSubjects/SCI00980, business
Abstract: Deep learning algorithms have revolutionized data science in many fields by greatly improving prediction performances in comparison to conventional approaches. Recently, explainable artificial intelligence (XAI) has emerged as a novel area of research that goes beyond pure prediction improvement. Knowledge embodied in deep learning methodologies is extracted by interpreting their results. We investigate such explanations to explore the genetic architectures of phenotypes in genome-wide association studies. Instead of testing each position in the genome individually, the novel three-step algorithm, called DeepCOMBI, first trains a neural network for the classification of subjects into their respective phenotypes. Second, it explains the classifiers’ decisions by applying layerwise relevance propagation as one example from the pool of XAI techniques. The resulting importance scores are eventually used to determine a subset of most relevant locations for multiple hypothesis testing in the third step. The performance of DeepCOMBI in terms of power and precision is investigated on generated datasets and a 2007 WTCCC study. Verification of the latter is achieved by validating all findings with independent studies published up until 2020. DeepCOMBI is shown to outperform ordinary raw p-value thresholding as well as other baseline methods. Moreover, two novel disease associations (rs10889923 for hypertension and rs4769283 for type 1 diabetes) were identified.
Published: 2021

24. Directed, Elliptic, and Higher Order Flow Harmonics of Protons, Deuterons, and Tritons inAu+AuCollisions atsNN=2.4 GeV

Author: M. Lorenz, S. Spataro, A. Malige, Roman Gernhäuser, A. Kugler, J. Dreyer, I. Fröhlich, Alexander Belyaev, Tatiana Karavicheva, T. Hennino, C. Behnke, P. Tlusty, L. Chlad, C. Wendisch, T. Heinz, Kirill Lapidus, S. Spies, Yu. G. Sobolev, J. A. Garzón, C. Müntz, F. Seck, A. Blanco, P. Fonte, B. Kämpfer, I. Koenig, Laura Fabbietti, Ilya Selyuzhenkov, L. Lopes, P. Zumbruch, Eliane Epple, A. Ivashkin, R. Kotte, K. Pysz, T. Scheib, O. Pechenova, P. Bordalo, C. Deveaux, H. Ströbele, M. Gumberidze, J. Pietraszko, Fedor Guber, R. Greifenhagen, Andrey Reshetin, M. Mamaev, C. Sturm, Oliver Werner Arnold, N. Rathod, V. Wagner, R. H. Munzer, D. M. Mihaylov, P. Rosier, S. Maurus, Y. Parpottas, O. Svoboda, J. Stroth, L. Silva, J. Friese, F. Scozzi, J. Adamczewski-Musch, V. Pechenov, K. Nowakowski, Sergey V. Morozov, B. Kardan, O. Petukhov, Grzegorz Korcyl, T. Mahmoud, B. W. Kolb, R. Lalik, A. K. Kurilkin, Krzysztof Piasecki, T. Kunz, P. Sellheim, A. Rost, Udai Pratap Singh, Christoph Blume, P. Filip, Yu.V. Zanevsky, Witold Przygoda, C. Franco, M. B. Golubeva, P. Rodriguez-Ramos, W. Koenig, G. Kornakov, B. Ramstein, T. Matulewicz, D. Wójcik, S. P. Chernenko, Volker Metag, A. Sadovsky, J. Michel, A. Lebedev, J. Wirth, M. Szala, A. Belounnas, A. B. Kurepin, S. Harabasz, M. Traxler, Jerzy Smyrski, M. Böhmer, A. Mangiarotti, T. Galatyuk, Piotr Salabura, L. Naumann, L. Maier, P. K. Kurilkin, C. Höhne, M. G. Wiebusch, E. Usenko, H. Schuldes, Izabela Ciepał, J. C. Berger-Chen, R. Holzmann, J. Markert, S. Ramos, S. Hlavac, V. P. Ladygin, O. V. Fateev, O. Golosov, F. Kornas, M. Kohls, J. Siebenson, E. Schwab, A.P. Ierusalimov, A. Rustamov, and H. Tsertos
Subjects: Physics, Equation of state, Spectrometer, Nuclear Theory, Elliptic flow, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, Baryon, Nuclear physics, Deuterium, Flow (mathematics), Harmonics, 0103 physical sciences, Rapidity, Nuclear Experiment, 010306 general physics
Abstract: Flow coefficients vn of the orders n=1-6 are measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI for protons, deuterons, and tritons as a function of centrality, transverse momentum, and rapidity in Au+Au collisions at sNN=2.4 GeV. Combining the information from the flow coefficients of all orders allows us to construct for the first time, at collision energies of a few GeV, a multidifferential picture of the angular emission pattern of these particles. It reflects the complicated interplay between the effect of the central fireball pressure on the emission of particles and their subsequent interaction with spectator matter. The high precision information on higher order flow coefficients is a major step forward in constraining the equation of state of dense baryonic matter.
Published: 2020

25. [German S1 guideline: obstructive sleep apnea in the context of tonsil surgery with or without adenoidectomy in children-perioperative management]

Author: G, Badelt, C, Goeters, K, Becke-Jakob, T, Deitmer, C, Eich, C, Höhne, B A, Stuck, and A, Wiater
Subjects: Adenoidectomy, Sleep Apnea, Obstructive, Adenoids, Palatine Tonsil, Humans, Child, Tonsillectomy
Abstract: Otolaryngologic surgery is one of the most frequent operative interventions performed in children. Tonsil surgery with or without adenoidectomy due to hyperplasia of the tonsils and adenoids with obstruction of the upper airways with or without tympanic ventilation disorder is the most common of these procedures. Children with a history of sleep apnoea (OSA) suffer from a significantly increased risk of perioperative respiratory complications. Cases of death and severe permanent neurologic damage have been reported due to apnoea and increased opioid sensitivity. The current guideline represents a pragmatic risk-adjusted approach. Patients with confirmed or suspected OSA should be treated perioperatively according to their individual risks and requirements, in order to avoid severe permanent damage.Operationen aus dem Fachgebiet der Hals-Nasen-Ohren-Heilkunde zählen zu den häufigsten operativen Eingriffen im Kindesalter. Die Tonsillenchirurgie mit oder ohne Adenotomie aufgrund einer adenotonsillären Hyperplasie mit Obstruktion der oberen Atemwege in Kombination mit oder ohne Belüftungsstörung des Mittelohrs ist bei diesen Eingriffen führend. Kinder mit obstruktiver Schlafapnoe (OSA) haben hierbei ein deutlich erhöhtes Risiko, perioperativ respiratorische Komplikationen zu erleiden. Es wurde über Todesfälle und bleibende neurologische Schäden aufgrund von Apnoe und einer erhöhten Opioidsensibilität berichtet. Die vorliegende Leitlinie stellt einen risikoadjustierten pragmatischen Ansatz dar. Patienten mit bestätigter oder vermuteter OSA sollen perioperativ entsprechend ihren individuellen Risiken und Bedürfnissen behandelt und überwacht werden, um schwere bleibende Schäden zu verhindern.
Published: 2020

26. Charged-pion production in $$\mathbf {Au+Au}$$ collisions at $$\sqrt{\mathbf {s}_{\mathbf {NN}}} = 2.4~{\mathbf {GeV}}$$

Author: L. Silva, C. Wendisch, K. Nowakowski, Tatiana Karavicheva, C. Behnke, J. A. Garzón, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, T. Galatyuk, E. Epple, S. Maurus, Piotr Salabura, L. Naumann, P. Rosier, P. Bordalo, Laura Fabbietti, C. Höhne, M. G. Wiebusch, E. Usenko, L. Maier, Christoph Blume, B. Kardan, V. Pechenov, M. Lorenz, Y. Parpottas, W. Koenig, H. Schuldes, S. Harabasz, O. Petukhov, M. Böhmer, A. Mangiarotti, A. K. Kurilkin, B. W. Kolb, E. Schwab, B. Kämpfer, A. Malige, Fedor Guber, P. Filip, A. Rost, M. Gumberidze, Yu. G. Sobolev, C. Müntz, R. Holzmann, J. Markert, S. Ramos, V. P. Ladygin, I. Koenig, Yu.V. Zanevsky, T. Heinz, P. Zumbruch, F. Scozzi, Izabela Ciepał, P. K. Kurilkin, Ilya Selyuzhenkov, T. Hennino, Oliver Werner Arnold, J. Adamczewski-Musch, M. B. Golubeva, P. Rodriguez-Ramos, A.P. Ierusalimov, F. Kornas, Grzegorz Korcyl, L. Chlad, H. Tsertos, O. Pechenova, A. Lebedev, Roman Gernhäuser, B. Ramstein, S. Hlavac, T. Matulewicz, A. Kugler, J. Pietraszko, A. Belounnas, A. B. Kurepin, M. Traxler, J. Dreyer, Alexander Belyaev, A. Sadovsky, A. Rustamov, J. C. Berger-Chen, S. Spies, C. Sturm, N. Rathod, S. Gläßel, C. Franco, Sergey V. Morozov, F. Seck, K. Pysz, T. Scheib, Witold Przygoda, M. Kohls, J. Siebenson, G. Kornakov, J. Friese, Udai Pratap Singh, C. Deveaux, R. Greifenhagen, O. Svoboda, R. Lalik, L. Lopes, Joachim Stroth, S. Spataro, I. Fröhlich, P. Tlusty, T. Mahmoud, P. Sellheim, H. Ströbele, V. Wagner, Andrey Reshetin, R. H. Munzer, D. M. Mihaylov, S. P. Chernenko, Volker Metag, J. Michel, J. Wirth, Krzysztof Piasecki, T. Kunz, M. Szala, Jerzy Smyrski, K. Lapidus, D. Wójcik, and O. V. Fateev
Subjects: Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, 01 natural sciences, ddc, Nuclear physics, Pion, 0103 physical sciences, Transverse mass, Rapidity, Impact parameter, Multiplicity (chemistry), 010306 general physics, Nucleon, Centrality
Abstract: We present high-statistic data on charged-pion emission from Au + Au collisions at $$\sqrt{s_{\mathrm{NN}}} = 2.4~\hbox {GeV}$$ s NN = 2.4 GeV (corresponding to $$E_{beam} = 1.23~\hbox {A GeV}$$ E beam = 1.23 A GeV ) in four centrality classes in the range 0–40% of the most central collisions. The data are analyzed as a function of transverse momentum, transverse mass, rapidity, and polar angle. Pion multiplicity per participating nucleon decreases moderately with increasing centrality. The polar angular distributions are found to be non-isotropic even for the most central event class. Our results on pion multiplicity fit well into the general trend of the available world data, but undershoot by $$2.5~\sigma $$ 2.5 σ data from the FOPI experiment measured at slightly lower beam energy. We compare our data to state-of-the-art transport model calculations (PHSD, IQMD, PHQMD, GiBUU and SMASH) and find substantial differences between the measurement and the results of these calculations.
Published: 2020

27. Proton-number fluctuations in sNN=2.4 GeV Au + Au collisions studied with the High-Acceptance DiElectron Spectrometer (HADES)

Author: H. Tsertos, N. Rathod, E. Schwab, J. Stroth, A. Sadovsky, Roman Gernhäuser, A. Kugler, A.P. Ierusalimov, L. Silva, Laura Fabbietti, S. Spies, G. Korcyl, Oliver Werner Arnold, W. Koenig, K. Nowakowski, Yu.V. Zanevsky, F. Scozzi, T. Galatyuk, J. Adamczewski-Musch, R. Lalik, A. Rustamov, V. P. Ladygin, F. Kornas, A. Lebedev, O. V. Fateev, A. Belounnas, M. Traxler, L. Chlad, P. Rodriguez-Ramos, B. W. Kolb, C. Sturm, P. Tlusty, Kirill Lapidus, V. Pechenov, Sergey V. Morozov, L. Lopes, F.F. Guber, L. Maier, A. K. Kurilkin, M. Szala, M. Böhmer, Yiannis Parpottas, E. Usenko, I. Koenig, A. Mangiarotti, Ilya Selyuzhenkov, B. Kämpfer, P. Filip, K. Pysz, T. Scheib, Alexey Kurepin, B. Kardan, O. Petukhov, J. A. Garzón, T. Hennino, A. Blanco, P. Fonte, H. Schuldes, M. Kohls, J. Siebenson, A. Rost, A. Ivashkin, B. Ramstein, S. Harabasz, C. Wendisch, M. Gumberidze, T. Matulewicz, R. Kotte, S. Spataro, Witold Przygoda, I. Fröhlich, P. Bordalo, O. Pechenova, Krzysztof Piasecki, T. Kunz, Izabela Ciepał, Jerzy Smyrski, T. Heinz, C. Höhne, J. C. Berger-Chen, J. Pietraszko, M. G. Wiebusch, Christoph Blume, M.B. Golubeva, Andrey Reshetin, V. Metag, H. Ströbele, Yu. G. Sobolev, R. H. Munzer, D. M. Mihaylov, C. Müntz, R. Holzmann, J. Markert, M. Lorenz, V. Wagner, P. Rosier, S. Maurus, Tatiana Karavicheva, S. Ramos, C. Behnke, P. K. Kurilkin, L. Naumann, Udai Pratap Singh, S. Hlavac, T. Mahmoud, A. Malige, D. Wójcik, P. Sellheim, S. P. Chernenko, P. Zumbruch, P. Salabura, J. Dreyer, Alexander Belyaev, J. Friese, J. Michel, J. Wirth, F. Seck, Eliane Epple, G. Kornakov, C. Franco, C. Deveaux, R. Greifenhagen, and O. Svoboda
Subjects: Physics, Proton, Spectrometer, 010308 nuclear & particles physics, Position and momentum space, 01 natural sciences, 7. Clean energy, Nuclear physics, Isospin, Phase space, 0103 physical sciences, Rapidity, Atomic number, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract: We present an analysis of proton-number fluctuations in sNN=2.4 GeV Au197+Au197 collisions measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt. With the help of extensive detector simulations done with Isospin Quantum Molecular Dynamics (IQMD) transport model events including nuclear clusters, various nuisance effects influencing the observed proton cumulants have been investigated. Acceptance and efficiency corrections have been applied as a function of fine-grained rapidity and transverse momentum bins, as well as considering local track density dependencies. Next, the effects of volume changes within particular centrality selections have been considered and beyond-leading-order corrections have been applied to the data. The efficiency and volume-corrected proton number moments and cumulants Kn of orders n=1, 2, 3, and 4 have been obtained as a function of centrality and phase-space bin, as well as the corresponding correlators Cn. We find that the observed correlators show a power-law scaling with the mean number of protons, i.e., Cn∞«N»n, indicative of mostly long-range multiparticle correlations in momentum space. We also present a comparison of our results with Au + Au collision data obtained at the Relativistic Heavy Ion Collider (RHIC) at similar centralities but higher √sNN.
Published: 2020

28. Two-pion production in the second resonance region in π−p collisions with the High-Acceptance Di-Electron Spectrometer (HADES)

Author: J. Stroth, Sergey V. Morozov, F.F. Guber, E. Schwab, B. Kämpfer, A. Sadovsky, Yiannis Parpottas, G. Korcyl, R. Lalik, O. V. Fateev, M. Böhmer, Alexey Kurepin, D. Dittert, A.P. Ierusalimov, W. Koenig, M. Gumberidze, C. Franco, H. Ströbele, V. Wagner, T. Mahmoud, A. Prozorov, P. Sellheim, S. Spataro, V. P. Ladygin, L. Silva, I. Fröhlich, H. Schuldes, Roman Gernhäuser, K. Nowakowski, J. Dreyer, A. Kugler, Alexander Belyaev, C. Müntz, C. Wendisch, Oliver Werner Arnold, T. Galatyuk, Yu.V. Zanevsky, J. Kuboś, C. Höhne, L. Lopes, T. Kunz, F. Kornas, M. G. Wiebusch, Izabela Ciepał, Piotr Salabura, C. Sturm, S. Spies, F. Scozzi, J. A. Garzón, E. T. Atomssa, L. Chlad, G. Kornakov, J. Adamczewski-Musch, L. Maier, Laura Fabbietti, J. Siebenson, B. Ramstein, P. Strzempek, M.B. Golubeva, P. Rodriguez-Ramos, P. Chudoba, J. Biernat, A. K. Kurilkin, S. Linev, A. Lebedev, B. W. Kolb, Andrey Reshetin, R. Holzmann, J. Markert, V. Metag, V. Pechenov, A. Rost, A. Belounnas, S. Maurus, T. Heinz, M. Traxler, R. H. Munzer, D. M. Mihaylov, M. Lorenz, B. Kardan, O. Petukhov, O. Vazquez-Doce, A. V. Sarantsev, C. Behnke, J. C. Berger-Chen, P. Tlusty, Kirill Lapidus, V. Mikhaylov, A. Malige, F. Seck, H. Tsertos, V. A. Nikonov, P. Zumbruch, I. Koenig, Eliane Epple, S. Harabasz, O. Pechenova, N. Rathod, J. Pietraszko, C. Deveaux, R. Greifenhagen, O. Svoboda, K. Schmidt-Sommerfeld, Udai Pratap Singh, Witold Przygoda, J. Friese, T. Scheib, C. Ungethüm, P. K. Kurilkin, L. Naumann, T. Hennino, D. Wójcik, M. Szala, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Christoph Blume, Jerzy Smyrski, S. P. Chernenko, J. Michel, and J. Wirth
Subjects: Physics, Excitation function, Particle physics, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, Nuclear Theory, Resonance, Coupling (probability), 7. Clean energy, 01 natural sciences, Baryon, Pion, 0103 physical sciences, Production (computer science), Nuclear Experiment, 010306 general physics
Abstract: Pion induced reactions provide unique opportunities for an unambiguous description of baryonic resonances and their coupling channels by means of a partial wave analysis. Using the secondary pion beam at SIS18, the two pion production in the second resonance region has been investigated to unravel the role of the $N(1520) \frac{3}{2}^-$ resonance in the intermediate $\rho$ production. Results on exclusive channels with one pion ($\pi^{-}p$) and two pions ($\pi^{+}\pi^{-}n$, $\pi^{0}\pi^{-}p$) in the final state measured in the $\pi^{-}-p$ reaction at four different pion beam momenta (0.650, 0.685, 0.733, and 0.786 GeV/c) are presented. The excitation function of the different partial waves and $\Delta\pi$, $N\sigma$ and $N\rho$ isobar configurations is obtained, using the Bonn-Gatchina partial wave analysis. The $N(1520) \frac{3}{2}^-$ resonance is found to dominate the $N\rho$ final state with the branching ratio $BR=12.2 \pm 1.9\%$.
Published: 2020

29. Identical pion intensity interferometry at $\sqrt{s_{\mathrm{NN}}}=2.4~\hbox {GeV}$: HADES collaboration

Author: Christoph Blume, Marek Palka, O. V. Fateev, I. Koenig, S. Harabasz, F. Seck, Ilya Selyuzhenkov, P. Tlusty, P. Strzempek, C. Franco, A. Dybczak, J. C. Berger-Chen, J. Biernat, Tatiana Karavicheva, C. Behnke, C. Wendisch, J. Dreyer, B. W. Kolb, Alexander Belyaev, B. Ramstein, L. Silva, A. Blanco, P. Fonte, S. Spataro, T. Matulewicz, S. Hlavac, Laura Fabbietti, A. Ivashkin, R. Kotte, K. Nowakowski, C. Deveaux, R. Greifenhagen, I. Fröhlich, C. Höhne, M. G. Wiebusch, T. Heinz, A. Sadovsky, O. Svoboda, P. Zumbruch, P. Salabura, H. Tsertos, E. Usenko, L. Chlad, M. Lorenz, Andrey Reshetin, L. Lopes, J. Siebenson, Joachim Stroth, Roman Gernhäuser, E. Epple, S. Maurus, A. Kugler, G. Kornakov, H. Schuldes, R. H. Munzer, D. M. Mihaylov, J. Friese, A. Rost, T. Galatyuk, F. Kornas, F. Scozzi, J. Adamczewski-Musch, E. Schwab, L. Naumann, R. Holzmann, P. Rosier, L. Maier, J. Markert, Krzysztof Piasecki, T. Kunz, S. Ramos, B. Kämpfer, S. Spies, J. A. Garzón, Witold Przygoda, G. Korcyl, R. Lalik, A.P. Ierusalimov, M. Gumberidze, T. Scheib, C. Sturm, T. Hennino, B. Kardan, M. Böhmer, A. Mangiarotti, Sergey V. Morozov, O. Petukhov, Fedor Guber, Oliver Werner Arnold, V. P. Ladygin, Yu.V. Zanevsky, S. P. Chernenko, Volker Metag, J. Michel, J. Wirth, M. B. Golubeva, P. Rodriguez-Ramos, Yu. G. Sobolev, M. Szala, C. Müntz, A. K. Kurilkin, O. Pechenova, J. Pietraszko, P. Filip, K. Lapidus, V. Pechenov, P. Bordalo, D. Wójcik, Y. Parpottas, A. Lebedev, A. Belounnas, A. B. Kurepin, M. Traxler, W. Koenig, H. Ströbele, V. Wagner, T. Mahmoud, P. Sellheim, P. K. Kurilkin, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and HADES
Subjects: Nuclear and High Energy Physics, dimension: 3, media_common.quotation_subject, interferometer, transverse momentum: low, Extrapolation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, beam: energy, energy dependence, Nuclear physics, Pion, 0103 physical sciences, Perpendicular, correlation function, Eccentricity (behavior), 010306 general physics, Nuclear Experiment, impact parameter, media_common, pi pi, Physics, energy: high, 010308 nuclear & particles physics, Plane (geometry), Transverse plane, Correlation function (statistical mechanics), 2.4 GeV-cms/nucleon, HADES, space-time, Impact parameter
Abstract: High-statistics $$\pi ^-\pi ^-$$π-π- and $$\pi ^+\pi ^+$$π+π+ femtoscopy data are presented for Au + Au collisions at $$\sqrt{s_\mathrm{NN}} = 2.4~\hbox {GeV}$$sNN=2.4GeV, measured with HADES at SIS18/GSI. The experimental correlation functions allow the determination of the space-time extent of the corresponding emission sources via a comparison to models. The emission source, parametrized as three-dimensional Gaussian distribution, is studied in dependence on pair transverse momentum, azimuthal emission angle with respect to the reaction plane, collision centrality and beam energy. For all centralities and transverse momenta, a geometrical distribution of ellipsoidal shape is found in the plane perpendicular to the beam direction with the larger extension perpendicular to the reaction plane. For large transverse momenta, the corresponding eccentricity approaches the initial eccentricity. The eccentricity is smallest for most central collisions, where the shape is almost circular. The magnitude of the tilt angle of the emission ellipsoid in the reaction plane decreases with increasing centrality and increasing transverse momentum. All source radii increase with centrality, largely exhibiting a linear rise with the cube root of the number of participants. A substantial charge-sign difference of the source radii is found, appearing most pronounced at low transverse momentum. The extracted source parameters are consistent with the extrapolation of their energy dependence down from higher energies.
Published: 2020

30. Correlated pion-proton pair emission off hot and dense QCD matter

Author: S. Spataro, I. Fröhlich, A. K. Kurilkin, R. Holzmann, J. Markert, S. Ramos, C. Franco, V. P. Ladygin, L. Lopes, H. Ströbele, V. Wagner, P. Filip, C. Wendisch, Joachim Stroth, Tatiana Karavicheva, C. Behnke, E. Usenko, O. Pechenova, O. V. Fateev, M. Böhmer, A. Mangiarotti, E. Schwab, P. Bordalo, L. Fabbietti, S. Harabasz, J. Pietraszko, A.P. Ierusalimov, Witold Przygoda, C. Deveaux, F. Kornas, C. Sturm, Y. Parpottas, H. Schuldes, R. Greifenhagen, L. Silva, O. Svoboda, K. Pysz, T. Scheib, T. Galatyuk, A. Lebedev, C. Höhne, M. G. Wiebusch, F. Scozzi, K. Nowakowski, A. Belounnas, A. B. Kurepin, M. Traxler, T. Heinz, Yu. G. Sobolev, J. Adamczewski-Musch, J. Dreyer, Alexander Belyaev, L. Naumann, H. Tsertos, B. W. Kolb, C. Müntz, J. Friese, Izabela Ciepał, P. Zumbruch, P. Salabura, M. Lorenz, W. Koenig, B. Kämpfer, Sergey V. Morozov, P. K. Kurilkin, V. Pechenov, Yu.V. Zanevsky, G. Kornakov, M. B. Golubeva, P. Rodriguez-Ramos, A. Malige, G. Korcyl, R. Lalik, E. Epple, P. Rosier, L. Maier, S. Hlavac, J. A. Garzón, Udai Pratap Singh, J. C. Berger-Chen, F. Seck, M. Kohls, J. Siebenson, S. Maurus, M. Gumberidze, Roman Gernhäuser, A. Kugler, I. Koenig, Ilya Selyuzhenkov, S. Spies, L. Chlad, N. Rathod, B. Kardan, O. Petukhov, Fedor Guber, Oliver Werner Arnold, B. Ramstein, T. Matulewicz, A. Sadovsky, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Christoph Blume, M. Szala, T. Mahmoud, P. Sellheim, A. Rost, Jerzy Smyrski, K. Lapidus, T. Hennino, D. Wójcik, S. P. Chernenko, Volker Metag, J. Michel, J. Wirth, Krzysztof Piasecki, T. Kunz, P. Tlusty, Andrey Reshetin, R. H. Munzer, D. M. Mihaylov, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Subjects: energy [excited state], Proton, Freezeout, transverse momentum dependence, 01 natural sciences, energy [hadron], Invariant mass, heavy-ion reactions, Nuclear Experiment (nucl-ex), Nuclear Experiment, mass [Delta(1232)], Physics, Baryonic resonances, Heavy-ion reactions, education.field_of_study, fireball, Breit-Wigner, hadron: energy, pi p: correlation, kinetic [energy], ddc, Isospin, Nucleon, Nuclear and High Energy Physics, 2.42 GeV-cms/nucleon, QC1-999, Population, correlation [pi p], FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], transverse momentum, Kinetic energy, Nuclear physics, isospin, Pion, 0103 physical sciences, Delta(1232): mass, matter [quantum chromodynamics], ddc:530, 010306 general physics, education, quantum chromodynamics: matter, energy: kinetic, 010308 nuclear & particles physics, background, excited state: energy, rapidity, HADES, freezeout, Energy (signal processing)
Abstract: In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at \sqrt{s_{NN}} = 2.42 GeV collected with HADES. In this energy regime the population of \Delta(1232) resonances plays an important role in the way energy is distributed between intrinsic excitation energy and kinetic energy of the hadrons in the fireball. The triple differential d3N/dM{\pi}pdpTdy distributions of correlated {\pi}p pairs have been determined by subtracting the {\pi}p combinatorial background using an iterative method. The invariant-mass distributions in the \Delta(1232) mass region show strong deviations from a Breit-Wigner function with vacuum width and mass. The yield of correlated pion-proton pairs exhibits a complex isospin, rapidity and transverse-momentum dependence. In the invariant mass range 1.1 < Minv (GeV/c2) < 1.4, the yield is found to be similar for {\pi}+p and {\pi}-p pairs, and to follow a power law ^{\alpha}, where is the mean number of participating nucleons. The exponent {\alpha} depends strongly on the pair transverse momentum (pT) while its pT-integrated and charge-averaged value is {\alpha} = 1.5 \pm 0.08stat \pm 0.2sys., Comment: 9 pages, 9 figures
Published: 2020
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31. Exploring time like tranistions in pp, πp and AA reactions with HADES

Author: Roman Gernhäuser, A. Kugler, S. Spies, P. Chudoba, Sergey V. Morozov, R. Greifenhagen, Vikram Patel, M. Lorenz, M. B. Golubeva, P. Rodriguez-Ramos, C. Müntz, P. Wintz, Krzysztof Piasecki, J. Stumm, T. Mahmoud, Christoph Blume, T. Galatyuk, B. Kardan, Burkhard Kampfer, B. Ramstein, A. Kozela, J. Dreyer, Alexander Belyaev, A. Prozorov, T. Matulewicz, O. Petukhov, J. Friese, A. Malige, US Singh, D. Dittert, A. Lebedev, A. Rost, G. Kornakov, V. Pechenov, Piotr Salabura, K. H. Kampert, A. Zhilin, S. Maurus, L. Naumann, C. Wendisch, P. Tlusty, M. Gumberidze, F. Scozzi, J. Adamczewski-Musch, F. Seck, C. Höhne, M. G. Wiebusch, A. Belounnas, Fedor Guber, S. Harabasz, M. Traxler, O. Pechenova, A.A. Weber, F. Kornas, Izabela Ciepał, S. Fateev, J. Pietraszko, M. Böhmer, A.P. Ierusalimov, K. Nowakowski, O. Svoboda, W. Koenig, S. Lebedev, Laura Fabbietti, J. Kuboś, Oleg Golosov, P. Kulesa, C. Pauly, S. Borisenko, L. Chlad, N. Rathod, W.A. Esmail, H. Ströbele, L. Ritman, P. Zumbruch, P. Salabura, Andrey Reshetin, V. Wagner, R. Holzmann, A. Blanco, I. Kres, J. Förtsch, P. Fonte, J. Markert, A. Ivashkin, R. Kotte, Gennady Lykasov, V. P. Ladygin, S. Linev, K. Pysz, B. Arnoldi-Meadows, C. Ungethüm, O. Vazquez-Doce, H. Huck, D. Pfeifer, Witold Przygoda, R. Hensch, L. Lopes, Joachim Stroth, J.-H. Otto, I. Shabanov, R. Lalik, I. Fröhlich, I. Selyuzhenkov, I. Koenig, Volker Metag, J. Michel, J. Wirth, M. Szala, Michael Dürr, Jerzy Smyrski, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and HADES
Subjects: p p: scattering, Photon, heavy ion: scattering, Meson, pi p: scattering, QC1-999, Nuclear Theory, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, dilepton, Nuclear physics, photon: massive, meson: coupling, 0103 physical sciences, transition: electromagnetic, ddc:530, Vector meson, 010306 general physics, Nuclear Experiment, enhancement, QCD matter, quantum chromodynamics: matter, Physics, form factor: transition, 010308 nuclear & particles physics, Scattering, Computer Science::Information Retrieval, High Energy Physics::Phenomenology, vector meson, Baryon, baryon, HADES, Excited state, High Energy Physics::Experiment, Nucleon
Abstract: NSTAR 2019, Bonn, Germany, 10 Jun 2019 - 14 Jun 2019; The European physical journal / Web of Conferences 241, 01013 (2020). doi:10.1051/epjconf/202024101013, Published by EDP Sciences, Les Ulis
Published: 2020

32. Production and electromagnetic decay of hyperons: a feasibility study with HADES as a Phase-0 experiment at FAIR

Author: Burkhard Kampfer, G. Kornakov, H.P. Zbroszczyk, K. Nowakowski, O. Svoboda, J. Saraiva, R. Greifenhagen, H. Huck, L. Chlad, J. Kuboś, C. Wendisch, M. Strikhanov, J. Szewczyk, M. Wasiluk, A.A. Weber, P. Chudoba, T. Matulewicz, T. Galatyuk, M. Szala, K. Pysz, S. Linev, I. Koenig, L. Naumann, Ilya Selyuzhenkov, F. Kornas, M. Kohls, Witold Przygoda, Manfred Sobiella, Sergey V. Morozov, V. Kedych, B. Kardan, E. Schwab, T. Heinz, O. Petukhov, B. Ramstein, Krzysztof Piasecki, J. Adamczewski-Musch, A. Prozorov, F. Scozzi, M. Grunwald, J. Ritman, C. Müntz, M. Lorenz, P. Kulessa, D. Grzonka, D. Pfeifer, A. Zhilin, N. Schild, Fedor Guber, A.P. Ierusalimov, J. Friese, V. Khomyakov, V. Serdyuk, J. Regina, G. I. Lykasov, Jerzy Smyrski, N. Rathod, P. Wintz, A. Shabanov, Arkadiy Taranenko, A. Kugler, M. Gumberidze, J. Rieger, I. Fröhlich, G. Perez Andrade, A. Rost, H. Ströbele, J. Michel, B. Heybeck, S. Spies, A. Malige, A. Rustamov, B. Włoch, I. Georgadze, C. Charlotte, V. Wagner, A. Blanco, P. Fonte, Andrey Reshetin, O. Pechenova, Udai Pratap Singh, A. Ivashkin, R. Kotte, J. Pietraszko, Christoph Blume, K. Sumara, S. Reznikov, A. Kozela, Karin Schönning, S. Orfanitsky, V. Pechenov, D. Dittert, A.I. Zinchenko, W. Koenig, P. Tlusty, D.S. Borisenko, A. Derichs, C. Pauly, W.A. Esmail, S. Lebedev, V. Kozlov, C. Le Galliard, I. Kres, J. Förtsch, R. Lalik, L. Lopes, M. Imre, Joachim Stroth, M. B. Golubeva, P. Rodriguez-Ramos, J.-H. Otto, Izabela Ciepał, M. Holona, A. Lebedev, M. Traxler, Vikram Patel, J. Dreyer, Alexander Belyaev, K. H. Kampert, F. Seck, Oleg Golosov, P. Zumbruch, P. Salabura, C. Höhne, E. Zherebzova, R. Holzmann, J. Markert, V. P. Ladygin, O. V. Fateev, S. Harabasz, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), HADES, and PANDA
Subjects: Lambda(1520): electromagnetic decay, p p: scattering, Nuclear and High Energy Physics, Particle physics, hyperon: electromagnetic decay, hydrogen: liquid, Physics::Instrumentation and Detectors, polymer, Hadron, FOS: Physical sciences, Elementary particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Lambda, 01 natural sciences, Subatomär fysik, Particle decay, Subatomic Physics, 0103 physical sciences, Lambda(1405): electromagnetic decay, ddc:530, Darmstadt GSI FAIR, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Xi-: production, Regular Article - Experimental Physics, Nuclear Physics, Heavy Ions, Hadrons, Particle and Nuclear Physics, Nuclear Fusion, p p: interaction, hydrogen: target, Physics, forward spectrometer, Sigma(1385): electromagnetic decay, energy: kinetic, 010308 nuclear & particles physics, Lambda(1405), PANDA, Hyperon, Order (ring theory), 4.5 GeV/nucleon, ddc, Baryon, HADES, Sigma(1385), upgrade, Production (computer science), High Energy Physics::Experiment, performance, acceptance
Abstract: A feasibility study has been performed in order to investigate the performance of the HADES detector to measure the electromagnetic decays of the hyperon resonances $\Sigma(1385)^0$, $\Lambda(1405)$ and $\Lambda{\Lambda}(1520)$ as well as the production of double strange baryon systems $\Xi^-$ and $\Lambda\Lambda$ in p+p reactions at a beam kinetic energy of 4.5 GeV. The existing HADES detector will be upgraded by a new Forward Detector, which extends the detector acceptance into a range of polar angles that plays a crucial role for these investigations. The analysis of each channel is preceded by a consideration of the production cross-sections. Afterwards the expected signal count rates using a target consisting of either liquid hydrogen or polyethylene are summarized., Comment: Draft prepared by Rafa{\l} Lalik, James Ritman, Piotr Salabura, 19 pages, 21 figures, 4 tables
Published: 2020
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33. Development of the Readout and Data-Acquisition System for the RICH Detector of the CBM Experiment

Author: Pavel Akishin, Yu. G. Riabov, S. Querchfeld, V. Dobyrn, V. Schetinin, J. Heep, J. Kopfer, C. Pauly, S. Belogurov, C. Ugur, M. Traxler, I. Kres, J. Förtsch, C. Höhne, Vikram Patel, K.-H. Becker, Vladimir Samsonov, E. Lebedeva, M. Vznuzdaev, P. Kravtsov, L. Kochenda, S. Lebedev, J. Eschke, J. Adamczewski-Musch, O. P. Tarasenkova, C. Deveaux, Manuel Penschuck, N. Boldyreva, J. Bendarouach, A. Khanzadeev, S. Reinecke, E. V. Ovcharenko, K. H. Kampert, E. Roshchin, Michael Dürr, T. Mahmoud, W. Niebur, D. Pfeifer, S. Linev, J. Rautenberg, and E. Leonova
Subjects: Physics, Photomultiplier, 010308 nuclear & particles physics, Preamplifier, Detector, Wavelength shifter, Concentrator, 01 natural sciences, Noise (electronics), Data acquisition, 0103 physical sciences, Electronic engineering, 010306 general physics, Instrumentation, Cherenkov radiation
Abstract: A 64-channel readout and data-acquisition module is described in detail. It consists of an H12700 multianode photomultiplier tube, four PADIWA preamplifier boards, and a TRB v3 card that perform the functions of a time-to-digital converter and a data concentrator. The software modules that are necessary for operation of the prototype are described. The inter-channel delays are calibrated. The drift of individual delays does not exceed 0.5 ns for the entire measurement time. The spectra of the “time over threshold” (ToT) are investigated. The influence of periodic noise pickups and the need to improve circuit designs are revealed. The timing properties of the wavelength shifter and its effect on the detection efficiency for Cherenkov rings are investigated. The most intense component is characterized by a decay time of 1.1 ns and there are components with characteristic times of 3.8 and 45 ns. The influence of single-electron spectrum features on the detection efficiency for photoelectrons and the probability of false hits are determined. The total time resolution of 131 channels is 1.1 ns (FWHM). The results make it possible to use the investigated system of readout and data acquisition in the CBM experiment. Nevertheless, the elimination of the revealed shortcomings will provide the efficiency margin and improve the reliability of the system during long-term operation.
Published: 2018

34. Effect of stroke thrombolysis predicted by distal vessel occlusion detection

Author: C Höhne, Wolfgang G. Kunz, Lukas T. Rotkopf, Bastian O. Sabel, Pierre Scheffler, Kolja M. Thierfelder, Wieland H. Sommer, Birgit Ertl-Wagner, Franziska Dorn, Felix G. Meinel, Matthias P. Fabritius, Wolfgang P. Fendler, and Maximilian F. Reiser
Subjects: Male, medicine.medical_specialty, Computed Tomography Angiography, Infarction, Perfusion scanning, Statistics, Nonparametric, 030218 nuclear medicine & medical imaging, Cohort Studies, 03 medical and health sciences, 0302 clinical medicine, Modified Rankin Scale, Internal medicine, Outcome Assessment, Health Care, Occlusion, Image Processing, Computer-Assisted, medicine, Humans, Thrombolytic Therapy, Aged, Aged, 80 and over, medicine.diagnostic_test, business.industry, Odds ratio, medicine.disease, Magnetic Resonance Imaging, Stroke, Cerebrovascular Disorders, Treatment Outcome, Cerebral blood flow, Cerebrovascular Circulation, Angiography, Cardiology, Female, Neurology (clinical), business, Perfusion, 030217 neurology & neurosurgery
Abstract: ObjectiveAmong ischemic stroke patients with negative CT angiography (CTA), we aimed to determine the predictive value of enhanced distal vessel occlusion detection using CT perfusion postprocessing (waveletCTA) for the treatment effect of IV thrombolysis (IVT).MethodsPatients were selected from 1,851 consecutive patients who had undergone CT perfusion. Inclusion criteria were (1) significant cerebral blood flow (CBF) deficit, (2) no occlusion on CTA, and (3) infarction confirmed on follow-up. Favorable morphologic response was defined as smaller values of final infarction volume divided by initial CBF deficit volume (FIV/CBF). Favorable functional outcome was defined as modified Rankin Scale score of ≤2 after 90 days and decrease in NIH Stroke Scale score of ≥3 from admission to 24 hours (∆NIHSS).ResultsAmong patients with negative CTA (n = 107), 58 (54%) showed a distal occlusion on waveletCTA. There was no difference between patients receiving IVT (n = 57) vs supportive care (n = 50) regarding symptom onset, early ischemic changes, perfusion mismatch, or admission NIHSS score (all p > 0.05). In IVT-treated patients, the presence of an occlusion was an independent predictor of a favorable morphologic response (FIV/CBF: β −1.43; 95% confidence interval [CI] −1.96, −0.83; p = 0.001) and functional outcome (90-day modified Rankin Scale: odds ratio 7.68; 95% CI 4.33–11.51; p = 0.039; ∆NIHSS: odds ratio 5.76; 95% CI 3.98–8.27; p = 0.013), while it did not predict outcome in patients receiving supportive care (all p > 0.05).ConclusionIn stroke patients with negative CTA, distal vessel occlusions as detected by waveletCTA are an independent predictor of a favorable response to IVT.
Published: 2018

35. РАЗРАБОТКА СИСТЕМЫ СЧИТЫВАНИЯ И ПРИЕМА ДАННЫХ ДЕТЕКТОРА RICH ЭКСПЕРИМЕНТА CBM, 'Приборы и техника эксперимента'

Author: J. Eschke, I. Kres, W. Niebur, Karl-Heinz Kampert, J. Heep, C. Ugur, S. Querchfeld, J. Förtsch, J. Kopfer, J. Rautenberg, C. Höhne, J. Bendarouach, Vikram Patel, K.-H. Becker, M. Traxler, Michael Dürr, J. Adamczewski-Musch, S. Reinecke, T. Mahmoud, D. Pfeifer, C. Pauly, C. Deveaux, and Manuel Penschuck
Subjects: Instrumentation
Published: 2018

36. The RICH detector of the CBM experiment

Author: J. Förtsch, P. Kravtsov, J. Eschke, K.-H. Becker, V. Schetinin, E. Lebedeva, J. Heep, V. Dobyrn, S. Belogurov, J. Kopfer, V. Patel, J. Adamczewski-Musch, C. Pauly, S. Lebedev, C. Ugur, E. Roshchin, Y. Riabov, I. Kres, L. Kochenda, K. H. Kampert, E. Vznuzdaev, O. Tarasenkova, V. Samsonov, S. Linev, Pavel Akishin, E. Ovcharenko, C. Deveaux, C. Höhne, J. Bendarouach, N. Miftakhov, T. Mahmoud, W. Niebur, M. Traxler, M. Vznuzdaev, E. Leonova, J. Michel, N. Boldyreva, S. Reinecke, Michael Dürr, J. Rautenberg, S. Querchfeld, and D. Pfeifer
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Cherenkov detector, Detector, Curved mirror, 01 natural sciences, law.invention, Nuclear physics, Optics, law, 0103 physical sciences, Electromagnetic shielding, Radiator (engine cooling), High Energy Physics::Experiment, 010306 general physics, business, Instrumentation, Radiation hardening, Cherenkov radiation
Abstract: The CBM-RICH detector is designed to identify electrons with momenta up to 8 GeV/c and high purity as this is essential for the CBM physics program. The detector consist of a CO2-gaseous radiator, a spherical mirror system, and Multi-Anode PhotoMultiplier Tubes (MAPMT) of type H12700 from Hamamatsu as photon detectors. The detector concept was verified through R&D studies and a laterally scaled prototype. The results were summarized in a TDR, in which open issues were defined concerning the readout electronics, the shielding of the magnetic stray field in the MAPMT region, the radiation hardness of the MAPMT sensors, and the mechanical holding structure of the mirror system. In this article an overview is given on the CBM RICH development with focus on those open issues.
Published: 2017

37. Event reconstruction for the CBM-RICH prototype beamtest data in 2014

Author: M. Vznuzdaev, K. H. Kampert, T. Mahmoud, J. Michel, J. Kopfer, E. Leonova, V. Schetinin, I. Kres, W. Niebur, O. Tarasenkova, P. Kravtsov, J. Eschke, C. Höhne, E. Ovcharenko, J. Förtsch, Y. Riabov, V. Dobyrn, N. Boldyreva, S. Lebedev, E. Vznuzdaev, V. Samsonov, S. Reinecke, L. Kochenda, C. Deveaux, J. Rautenberg, C. Pauly, D. Pfeifer, K.-H. Becker, E. Lebedeva, J. Heep, Pavel Akishin, S. Belogurov, C. Ugur, V. Patel, J. Adamczewski-Musch, S. Querchfeld, Michael Dürr, J. Bendarouach, N. Miftakhov, M. Traxler, S. Linev, and E. Roshchin
Subjects: Physics, Nuclear and High Energy Physics, Data processing, Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, 02 engineering and technology, Ellipse, 01 natural sciences, Particle detector, Hough transform, law.invention, Optics, law, 0103 physical sciences, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, business, Instrumentation, Algorithm, Cherenkov radiation, Event reconstruction
Abstract: The Compressed Baryonic Matter (CBM) experiment at the future FAIR facility will investigate the QCD phase diagram at high net baryon densities and moderate temperatures in A+A collisions from 2 to 11 AGeV (SIS100). Electron identification in CBM will be performed by a Ring Imaging Cherenkov (RICH) detector and Transition Radiation Detectors (TRD). A real size prototype of the RICH detector was tested together with other CBM groups at the CERN PS/T9 beam line in 2014. For the first time the data format used the FLESnet protocol from CBM delivering free streaming data. The analysis was fully performed within the CBMROOT framework. In this contribution the data analysis and the event reconstruction methods which were used for obtained data are discussed. Rings were reconstructed using an algorithm based on the Hough Transform method and their parameters were derived with high accuracy by circle and ellipse fitting procedures. We present results of the application of the presented algorithms. In particular we compare results with and without Wavelength shifting (WLS) coating.
Published: 2017

38. Upgrade of the HADES RICH photon detector with H12700 MAPMTs

Author: C. Höhne, P. Zumbruch, W. Niebur, T. Kunz, J. Friese, V. Patel, M. Traxler, M. Faul, J. Eschke, P. Skott, J. Michel, D. Pfeifer, A.A. Weber, C. Pauly, C. Ugur, S. Lebedev, and Karl-Heinz Kampert
Subjects: Physics, Nuclear and High Energy Physics, Photomultiplier, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, Detector, Photon detector, Electron, 01 natural sciences, Cathode, law.invention, Nuclear physics, Upgrade, law, 0103 physical sciences, Physics::Accelerator Physics, Heavy ion, Nuclear Experiment, 010306 general physics, Instrumentation
Abstract: The HADES RICH detector is designed for efficient electron identification (electron momenta up to few GeV) in relativistic heavy ion collisions, and successfully in operation since 1999 at the SIS18 accelerator facility, GSI, Darmstadt, Germany. It uses a gaseous photon detector with reflective CsI cathode deposited on the MWPC pad plane. The CBM experiment at the future FAIR facility in Darmstadt will install a RICH detector utilizing 1100 Hamamatsu H12700 Multianode Photomultiplier tubes. In a joint effort the HADES RICH photon detector will be replaced by a subset of these MAPMTs together with a new FPGA-TDC based readout chain resulting in a significant improvement of e + e − - pair reconstruction efficiency for near future measurement campaigns.
Published: 2017

39. Conception and design of a control and monitoring system for the mirror alignment of the CBM RICH detector

Author: S. Lebedev, M. Vznuzdaev, J. Eschke, E. Vznuzdaev, V. Samsonov, D. Pfeifer, C. Deveaux, Pavel Akishin, Y. Riabov, P. Kravtsov, J. Rautenberg, K.-H. Becker, V. Schetinin, E. Lebedeva, E. Leonova, S. Querchfeld, I. Kres, E. Roshchin, V. Patel, J. Adamczewski-Musch, C. Höhne, J. Kopfer, J. Förtsch, T. Mahmoud, W. Niebur, S. Linev, L. Kochenda, K. H. Kampert, E. Ovcharenko, M. Traxler, J. Bendarouach, N. Miftakhov, V. Dobyrn, C. Pauly, C. Ugur, O. Tarasenkova, Michael Dürr, J. Michel, N. Boldyreva, S. Reinecke, J. Heep, and S. Belogurov
Subjects: Physics, Nuclear and High Energy Physics, business.industry, Detector, 02 engineering and technology, Fermion, Electron, 021001 nanoscience & nanotechnology, 01 natural sciences, Particle detector, Software, Optics, 0103 physical sciences, Measuring instrument, 010306 general physics, 0210 nano-technology, business, Instrumentation, Cherenkov radiation, Lepton
Abstract: The Compressed Baryonic Matter (CBM) experiment at the future Facility for Anti-proton and Ion Research (FAIR) will investigate the phase diagram of strongly interacting matter at high net-baryon density and moderate temperature in A+A collisions. One of the key detectors of CBM to explore this physics program is a Ring Imaging CHerenkov (RICH) detector for electron identification. For a high performance of the RICH detector precise mirror alignment is essential. A three-step correction cycle has been developed, which will be discussed: First a qualitative, fast check of the mirror positions, second a quantitative determination of possible misalignments and third a software correction routine, allowing a proper functioning of the RICH under misalignment conditions.
Published: 2017

40. Tests of the CBM Rich readout and Daq prototype

Author: J. Kopfer, J. Heep, V. Samsonov, V. Schetinin, A. Khanzadeev, V. Dobyrn, S. Linev, T. Mahmoud, C. Pauly, S. Belogurov, S. Querchfeld, Y. Riabov, E. V. Ovcharenko, J. Eschke, E. Roshchin, I. Kres, Pavel Akishin, W. Niebur, J. Förtsch, O. Tarasenkova, M. Vznuzdaev, E. Leonova, M. Traxler, S. Lebedev, J. Rautenberg, Vikram Patel, K.-H. Becker, E. Lebedeva, J. Bendarouach, J. Adamczewski-Musch, K. H. Kampert, C. Deveaux, L. Kochenda, P. Kravtsov, N. Boldyreva, S. Reinecke, Michael Dürr, C. Ugur, J. Michel, C. Höhne, and D. Pfeifer
Subjects: 010302 applied physics, Physics, Nuclear and High Energy Physics, Radiation, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, 01 natural sciences, Atomic and Molecular Physics, and Optics, Data acquisition, Component (UML), 0103 physical sciences, Calibration, Radiology, Nuclear Medicine and imaging, Heavy ion, business, Computer hardware
Abstract: The CBM RICH detector is an integral component of the future CBM experiment at FAIR, providing efficient electron identification and pion suppression necessary for the measurement of rare dileptonic probes in heavy ion collisions. An overview of the CBM RICH readout and DAQ system prototype is given, consisting of the PADIWA preamplifier-discriminator board, the TDC-HUB board TRBv3, and DAQ and analysis code in the CbmRoot framework. The laboratory setup built for studying the timing characteristics of the readout chain and the analysis results obtained using the laboratory measurements are presented. The fine time calibration and inter-channel delay correction techniques and their implementation and effect are discussed.
Published: 2017

41. Crossed cerebellar diaschisis im akuten ischämischen Schlaganfall: Einfluss auf morphologisches Outcome, klinisches Outcome und assoziierte subakute Komplikationen

Author: M. F. Reiser, Kolja M. Thierfelder, Wieland H. Sommer, C Höhne, Thomas Huber, F Schuler, Matthias P. Fabritius, and Wolfgang G. Kunz
Subjects: Radiology, Nuclear Medicine and imaging
Published: 2017

42. Prädiktiver Wert der CT-Perfusionsbildgebung bei akuter Kleinhirnischämie für die Entstehung eines malignen Kleinhirnödems

Author: C Höhne, Matthias P. Fabritius, Kolja M. Thierfelder, Wolfgang G. Kunz, M. F. Reiser, Wieland H. Sommer, Birgit Ertl-Wagner, and F Schuler
Subjects: Radiology, Nuclear Medicine and imaging
Published: 2017

43. Die Detektion CTA-okkulter Gefäßverschlüsse mittels Post-Processing der CT Perfusion begünstigt den Therapieerfolg der intravenösen Thrombolyse im akuten ischämischen Schlaganfall

Author: M. F. Reiser, C Höhne, Wieland H. Sommer, Lukas Havla, Wolfgang G. Kunz, Matthias P. Fabritius, and Kolja M. Thierfelder
Subjects: Radiology, Nuclear Medicine and imaging
Published: 2017

44. The CBM RICH project

Author: J. Adamczewski-Musch, P. Akishin, K.-H. Becker, S. Belogurov, J. Bendarouach, N. Boldyreva, A. Chernogorov, C. Deveaux, V. Dobyrn, M. Dürr, J. Eschke, J. Förtsch, J. Heep, C. Höhne, K.-H. Kampert, L. Kochenda, J. Kopfer, P. Kravtsov, I. Kres, S. Lebedev, E. Lebedeva, E. Leonova, S. Linev, T. Mahmoud, J. Michel, N. Miftakhov, W. Niebur, E. Ovcharenko, V. Patel, C. Pauly, D. Pfeifer, S. Querchfeld, J. Rautenberg, S. Reinecke, Y. Riabov, E. Roshchin, V. Samsonov, O. Tarasenkova, M. Traxler, C. Ugur, E. Vznuzdaev, and M. Vznuzdaev
Subjects: Nuclear and High Energy Physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences, Instrumentation
Published: 2017

45. Strong Absorption of Hadrons with Hidden and Open Strangeness in Nuclear Matter

Author: Grzegorz Korcyl, S. P. Chernenko, V. Metag, L. Chlad, T. Hennino, O. V. Fateev, J. A. Garzón, J. Michel, T. Mahmoud, D. Dittert, L. Silva, A. Blanco, P. Fonte, P. Chudoba, M. Lorenz, Yu.V. Zanevsky, V. P. Ladygin, A. Ivashkin, J. Dreyer, Alexander Belyaev, R. Kotte, A. Prozorov, K. Nowakowski, S. Spataro, S. Linev, P. Sellheim, V. Pechenov, J. Wirth, T. Kunz, T. Heinz, T. Galatyuk, H. Tsertos, P. Zumbruch, P. Rodriguez-Ramos, J. Kuboś, C. Behnke, P. Salabura, A. Rost, S. Harabasz, H. Schuldes, I. Fröhlich, M.B. Golubeva, A. K. Kurilkin, M. Szala, Sergey V. Morozov, P. Tlusty, Kirill Lapidus, O. Vazquez Doce, T. Scheib, V. Mikhaylov, Christoph Blume, H. Ströbele, Izabela Ciepał, L. Maier, O. Pechenova, A. Malige, B. Kämpfer, V. Wagner, W. Koenig, F. Seck, L. Lopes, Andrey Reshetin, Yiannis Parpottas, J. Pietraszko, C. Ungethüm, S. Maurus, Oliver Werner Arnold, Eliane Epple, M. Gumberidze, C. Höhne, M. G. Wiebusch, C. Wendisch, R. H. Munzer, D. M. Mihaylov, Roman Gernhäuser, Alexey Kurepin, A. Kugler, E. T. Atomssa, Jerzy Smyrski, B. Ramstein, S. Spies, J. Siebenson, E. Schwab, B. Kardan, Laura Fabbietti, C. Müntz, O. Petukhov, A. Sadovsky, P. Strzempek, J. Biernat, R. Holzmann, N. Rathod, J. Stroth, J. Markert, A.P. Ierusalimov, P. K. Kurilkin, R. Lalik, A. Lebedev, F. Kornas, A. Belounnas, M. Traxler, F.F. Guber, M. Böhmer, Catalina Curceanu, B. W. Kolb, F. Scozzi, J. Adamczewski-Musch, Alessandro Scordo, I. Koenig, J. C. Berger-Chen, G. Kornakov, C. Franco, C. Deveaux, R. Greifenhagen, O. Svoboda, K. Schmidt-Sommerfeld, J. Friese, Witold Przygoda, K. Piscicchia, L. Naumann, D. Wójcik, C. Sturm, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), HADES, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Meson, Hadron, FOS: Physical sciences, General Physics and Astronomy, Strangeness, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], meson, 01 natural sciences, Nuclear physics, Momentum, strangeness, K-: absorption, 0103 physical sciences, strong coupling, Nuclear Experiment (nucl-ex), 010306 general physics, Absorption (electromagnetic radiation), Nuclear Experiment, Physics, nucleus, hadron: absorption, Coupling (probability), Nuclear matter, Neutron star, Automatic Keywords, HADES, nuclear matter, beam: momentum, Elementary Particles and Fields, acceptance
Abstract: We present the first observation of K- and \phi absorption within nuclear matter by means of \pi- -induced reactions on C and W targets at an incident beam momentum of 1.7 GeV/c studied with HADES at SIS18/GSI. The double ratio (K-/K+)W / (K-/K+)C is found to be 0.319 \pm 0.009(stat)+0.014-0.012 (syst) indicating a larger absorption of K- in heavier targets as compared to lighter ones. The measured \phi/K- ratios in \pi-+C and \pi^- +W reactions within the HADES acceptance are found to be equal to $0.55 \pm 0.03(stat)+0.06-0.07$ (syst) and to $0.63 \pm 0.05(stat)-0.11+0.11$ (syst), respectively. The similar ratios measured in the two different reactions demonstrate for the first time experimentally that the dynamics of the \phi meson in nuclear medium is strongly coupled to the K- dynamics. The large difference in the \phi production off C and W nuclei is discussed in terms of a strong \phiN in-medium coupling., Comment: 6 pages, 3 figures
Published: 2019

46. Time-like baryon transitions studies with HADES

Author: A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, V. Kushpil, C. Wendisch, A. Lebedev, P. Wintz, L. Silva, S. Morozov, K. Nowakowski, A. Belounnas, A. B. Kurepin, J. Kuboś, Manfred Sobiella, C. Müntz, M. Traxler, C. Deveaux, P. Tlusty, R. Greifenhagen, E. Schwab, Christoph Blume, S. Spataro, Arkadiy Taranenko, V. Mikhaylov, T. Heinz, H. Tsertos, I. Fröhlich, O. Svoboda, M. Liu, A.I. Zinchenko, B. Kardan, F. Kornas, A. Kozela, D. Pfeifer, K. H. Kampert, B. Kämpfer, R. Lalik, O. Petukhov, M. Lorenz, V. Pechenov, B. Włoch, L. Lopes, M. Gumberidze, A.P. Ierusalimov, T. Galatyuk, F. Seck, W. Koenig, C. Pauly, P. K. Kurilkin, Fedor Guber, Joachim Stroth, P. Chudoba, S. Harabasz, C. Franco, L. Naumann, P. Bordalo, Oliver Werner Arnold, M. Zuschke, Laura Fabbietti, R. Holzmann, H. Schuldes, J. Pietraszko, J. Markert, T. Hennino, I. Koenig, Vikram Patel, Andrey Reshetin, D. Dittert, Roman Gernhäuser, G. Kornakov, A. Kugler, Ilya Selyuzhenkov, Grzegorz Korcyl, V. Khomyakov, Y. Parpottas, S. Ramos, D. M. Mihaylov, M. Kajetanowicz, L. Chlad, Anna Carolina Toledo da Cunha Pereira, M. Böhmer, J. Dreyer, Alexander Belyaev, Izabela Ciepał, V. Petousis, S. Spies, A. Rost, V. P. Ladygin, S. Linev, Witold Przygoda, A. Gillitzer, L. Ritman, P. Zumbruch, O. V. Fateev, Victor Ivanov, P. Salabura, A. Zhilin, T. Kunz, H. Ströbele, B. Ramstein, F. Scozzi, M. B. Golubeva, Gennady Lykasov, J. Adamczewski-Musch, P. Rodriguez-Ramos, A. Sadovsky, M. Himmelreich, V. Wagner, C. Höhne, T. Mahmoud, M. G. Wiebusch, J. Friese, P. Sellheim, S. Maurus, P. Strzempek, J. Biernat, J. A. Garzón, Tatiana Karavicheva, A. Troyan, K. Pysz, T. Scheib, B. Arnoldi-Meadows, Volker Metag, J. Michel, J. Wirth, O. Pechenova, M. Szala, Jerzy Smyrski, Alexander Malakhov, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), HADES, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: p p: scattering, Meson, QC1-999, Nuclear Theory, off-shell, hyperon, 01 natural sciences, Resonance (particle physics), electron: pair production, Nuclear physics, transition: electromagnetic, 0103 physical sciences, Elementary reaction, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], talk: Krakow 2018/06/07, ddc:530, structure, pi: beam, Vector meson, Nuclear Experiment, 010306 general physics, Physics, Range (particle radiation), 1-3.5 GeV-cms/nucleon, 010308 nuclear & particles physics, nucleon, Hyperon, matter: effect, vector meson, Darmstadt Lab, Baryon, HADES, kinematics, baryon resonance: production, Physics::Accelerator Physics, High Energy Physics::Experiment, Nucleon, experimental results
Abstract: The HADES collaboration uses the e+e−production as a probe of the resonance matter produced in collisions at incident energies of 1-3.5 GeV/nucleon at GSI. Elementary reactions provide useful references for these studies and give information on resonance Dalitz decays (R→Ne+e−). Such processes are sensitive to the structure of time-like electromagnetic baryon transitions in a kinematic range where (off-shell) vector mesons play a crucial role. Results obtained in proton-proton reactions and in a commissioning pion-beam experiment are reported and prospects for future pion beam experiments and for first hyperon Dalitz decay measurements are described. The connection with the investigations of medium effects to be continued with HADES in the next years at SIS18 and SIS100 is also discussed.
Published: 2019

47. Einführung in die Kern- und Teilchenphysik

Author: C. Höhne
Abstract: Woraus besteht Materie? Was halt sie zusammen? Warum gibt es so viele unterschiedliche Elemente? Gibt es so etwas wie einen Baukasten der Natur, unzerlegbare kleinste Bausteine, aus denen die uns bekannte Materie aufgebaut ist? Gibt es eventuell noch ganz andere Materie als die, die uns umgibt? Diese Fragen stellen sich Menschen schon seit mehr als 2000 Jahren, und die moderne Kern- und Teilchenphysik kann zumindest auf viele dieser Fragen eine Antwort geben: Unsere Materie besteht aus kleinsten, nach heutigem Verstandnis unteilbaren Elementarbausteinen, den Quarks und Leptonen, und wird durch Krafte zwischen diesen Teilchen zusammengehalten. Mit diesem Standardmodell der Teilchenphysik konnen wir die allermeisten Beobachtungen erklaren. Aber nicht alle . . .
Published: 2019

48. Identical pion intensity interferometry in central Au + Au collisions at 1.23 A GeV

Author: I. Koenig, O. V. Fateev, P. Bordalo, P. K. Kurilkin, Laura Fabbietti, B. Kämpfer, Y. Parpottas, C. Deveaux, R. Greifenhagen, E. Usenko, O. Svoboda, A. Dybczak, Yu.V. Zanevsky, J. C. Berger-Chen, R. Lalik, Roman Gernhäuser, C. Wendisch, M. Gumberidze, H. Schuldes, O. Pechenova, A. Kugler, R. Holzmann, J. Markert, B. Ramstein, G. Kornakov, P. Tlusty, S. Ramos, T. Galatyuk, J. Dreyer, Alexander Belyaev, F. Scozzi, A. Blanco, P. Fonte, M. B. Golubeva, S. P. Chernenko, S. Spataro, I. Fröhlich, P. Rodriguez-Ramos, A. Ivashkin, A. Lebedev, R. Kotte, J. Pietraszko, V. P. Ladygin, S. Spies, Volker Metag, L. Naumann, P. Rosier, Witold Przygoda, L. Maier, M. Böhmer, A. Mangiarotti, C. Höhne, M. G. Wiebusch, A. K. Kurilkin, E. Epple, L. Lopes, S. Maurus, J. Michel, L. Silva, Joachim Stroth, F. Seck, A. Belounnas, A. B. Kurepin, J. Friese, C. Franco, M. Traxler, K. Nowakowski, B. W. Kolb, M. Lorenz, C. Sturm, S. Hlavac, P. Filip, A. Rost, J. Adamczewski-Musch, S. Morozov, J. Wirth, T. Mahmoud, J. Siebenson, E. Schwab, P. Strzempek, M. Szala, J. A. Garzón, Andrey Reshetin, P. Sellheim, J. Biernat, A.P. Ierusalimov, R. H. Munzer, D. M. Mihaylov, T. Scheib, T. Heinz, W. Koenig, P. Zumbruch, P. Salabura, Tatiana Karavicheva, C. Behnke, Krzysztof Piasecki, T. Kunz, H. Ströbele, Christoph Blume, V. Wagner, K. Lapidus, D. Wójcik, I. Selyuzhenkov, H. Tsertos, B. Kardan, Marek Palka, O. Petukhov, S. Harabasz, Fedor Guber, T. Hennino, Oliver Werner Arnold, Grzegorz Korcyl, L. Chlad, T. Matulewicz, A. Sadovsky, Yu. G. Sobolev, C. Müntz, V. Pechenov, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), HADES, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: correlation: two-particle, Nuclear and High Energy Physics, heavy ion: scattering, dimension: 3, Gaussian, interferometer, transverse momentum: low, potential: Coulomb, Extrapolation, pi, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Computer Science::Digital Libraries, energy dependence, Nuclear physics, symbols.namesake, Pion, Correlation function, 0103 physical sciences, correlation function: two-particle, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, energy: low, Physics, 010308 nuclear & particles physics, Radius, Hanbury-Brown-Twiss effect, lcsh:QC1-999, Intensity (physics), Interferometry, HADES, symbols, lcsh:Physics, Excitation, experimental results
Abstract: We investigate identical pion HBT intensity interferometry for central Au+Au collisions at 1.23A GeV. High-statistics $\pi^-\pi^-$ and $\pi^+\pi^+$ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinal-comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted Coulomb-corrected source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy. Our data would thus rather disfavour any strong energy dependence of the radius parameters in the low energy region., Comment: 7 pages, 5 figures, updated author and grant lists
Published: 2019

49. Development of the CBM RICH readout electronics and DAQ

Author: S. Querchfeld, V. Schetinin, C. Höhne, M. Vznuzdaev, O. Tarasenkova, J. Kopfer, J. Heep, S. Belogurov, Y. Riabov, K.-H. Becker, E. Lebedeva, S. Linev, E. Leonova, V. Samsonov, V. Patel, T. Mahmoud, J. Eschke, J. Adamczewski-Musch, J. Michel, M. Traxler, W. Niebur, E. Ovcharenko, K. H. Kampert, C. Deveaux, J. Bendarouach, Pavel Akishin, N. Miftakhov, S. Lebedev, E. Vznuzdaev, D. Pfeifer, P. Kravtsov, N. Boldyreva, S. Reinecke, L. Kochenda, Michael Dürr, C. Pauly, C. Ugur, E. Roshchin, V. Dobyrn, J. Rautenberg, J. Förtsch, and I. Kres
Subjects: Physics, Nuclear and High Energy Physics, Large Hadron Collider, Physics::Instrumentation and Detectors, 010308 nuclear & particles physics, business.industry, Detector, Readout electronics, 01 natural sciences, Real size, Data acquisition, 0103 physical sciences, Calibration, 010306 general physics, business, Instrumentation, Computer hardware
Abstract: A real size prototype of the CBM RICH detector was tested in beam at CERN in November 2014 with new readout electronics. A detailed analysis of the timing characteristics of the readout chain will be presented in this article. Results of the time precision measurements for several subsets of all channels and the stability of the fine time calibration will be discussed. The obtained sub-nanosecond time precision allows also to investigate the effect on timing when using additional wavelength-shifting films on top of the MAPMT windows.
Published: 2017

50. Single photon test bench for series tests of HAMAMATSU H12700 MAPMTs

Author: K. H. Kampert, J. Kopfer, M. Vznuzdaev, V. Schetinin, S. Lebedev, C. Höhne, J. Förtsch, K.-H. Becker, Pavel Akishin, P. Kravtsov, E. Lebedeva, S. Querchfeld, J. Heep, J. Eschke, E. Roshchin, S. Belogurov, V. Patel, J. Adamczewski-Musch, T. Mahmoud, V. Samsonov, E. Leonova, J. Rautenberg, V. Dobyrn, I. Kres, W. Niebur, C. Pauly, C. Deveaux, L. Kochenda, E. Ovcharenko, C. Ugur, M. Traxler, E. Vznuzdaev, S. Linev, Y. Riabov, D. Pfeifer, J. Bendarouach, N. Miftakhov, O. Tarasenkova, Michael Dürr, N. Boldyreva, S. Reinecke, and J. Michel
Subjects: Physics, Nuclear and High Energy Physics, Test bench, Photon, Series (mathematics), 010308 nuclear & particles physics, Detector, 01 natural sciences, 030218 nuclear medicine & medical imaging, Nuclear physics, 03 medical and health sciences, 0302 clinical medicine, 0103 physical sciences, Heavy ion, Instrumentation, Photon detection, Dense matter
Abstract: In 2015 1100 Multi-Anode Photo-Multipliers (MAPMTs) of type HAMAMATSU H12700 were ordered to equip the photon detection plane of the CBM-RICH and HADES-RICH detectors. Both experiments aim to study the properties of dense matter produced in heavy ion collisions. To measure the characteristics of all ordered MAPMTs and give feedback to the manufacturer, a test bench was built at the University of Wuppertal. This paper describes the working principle of the test bench and compiles the measurements of the first 400 H12700 MAPMTs delivered. The average characteristics of the H12700 gathered from these measurements are discussed and compared to measurements of the HAMAMATSU H8500.
Published: 2017

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