BEGIN:VCALENDAR VERSION:2.0 PRODID:icalendar-ruby CALSCALE:GREGORIAN METHOD:PUBLISH BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/3911/4160223 DTSTART:20160115T093000Z DTEND:20160115T103000Z CLASS:PUBLIC CREATED:20160112T103848Z DESCRIPTION:Europe is pursuing an aggressive programme to increase its shar e of renewable energy source (RES). However\, the integration of intermitt ent RES (wind and photovoltaic) in the electrical system requires either m aintaining in operation thermoelectric backup systems or providing a subst antial amount of electricity storage. We analyze the Italian data for the year 2013 provided by the transmission system operator TERNA. Intermittent RES power is scaled-up to a level at which it generates an amount of elec tricity equal to the annual demand. While a substantial reduction of the e nergy annually produced by backup systems (and the associated CO2 emission ) with respect to the no-RES case is possible in many scenarios considered here\, the backup power is generally only marginally reduced below the va lue in the absence of RES. The strategy proposed is based on the combinati on of a modest amount of storage (0.5-5TWh) and base-load power (6-15GW\, to be used during the seasons of low RES production). In this way the non- RES installed power can be reduced from ~50GW to less than 15GW and could be covered by a combination of biomasses and nuclear energy without any CO 2 emission.\nVortragende(r): Prof. F. Romanelli LAST-MODIFIED:20160419T092533Z LOCATION:Garching\, Raum: Hörsaal D2 (Übertragung nach HGW S1) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: Impact of renewable energy sources on electric ity production URL;VALUE=URI:https://www.ipp.mpg.de/events/3911/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/3912/4160223 DTSTART:20160122T093000Z DTEND:20160122T103000Z CLASS:PUBLIC CREATED:20160112T104601Z DESCRIPTION:\nThe axisymmetric helical field of a tokamak leads to closed u nperturbed particle orbits\, thus arising as one of the most viable concep ts for a fusion reactor. Orbit perturbations due to either Coulomb collisi ons or electromagnetic potential fluctuations ultimately determine the ene rgy and particle confinement times. Macroscopic temperature and density pr ofiles result from the balance of external sources and of the internally p roduced fusion power with the transport processes due to the aforementione d mechanisms. Thereby\, the numerical design of a commercially viable toka mak fusion reactor requires integration of physics tools that describe bot h the fast/small scale processes and the slow/macroscopic evolution of the plasma profiles and the plasma shape. To this end\, nowadays\, progress i n the theoretical description of the transport processes allows the applic ation of increasingly realistic theory-based models. This also implies tha t any modeling activity should be performed keeping into account the assum ptions and potential limitations of the models that are employed. \n\nIn t his talk\, first a description of the logical coupling of the tools is giv en\, clarifying the underlying physics of each piece of the system\, from the small to the large spatial/temporal scales. Practical applications are then shown. These are based on the ASTRA-SPIDER transport/equilibrium pac kage developed at IPP and in collaboration with TUAP (St. Petersburg)\, wi th inclusion of additional modules for turbulence-driven transport fluxes (e.g. TGLF\, from General Atomics)\, and impurity particle transport (STRA HL\, developed at IPP). \n\nFinally\, an outlook is given on the open chal lenges in this research activity.\nVortragende(r): Dr. E. Fable LAST-MODIFIED:20160419T092552Z LOCATION:Garching\, Raum: Hörsaal D2 (Übertragung nach HGW S1) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: The challenge of predicting a tokamak fusion r eactor: From fast small scale dynamics to large scale profile evolution URL;VALUE=URI:https://www.ipp.mpg.de/events/3912/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/4058/4160223 DTSTART:20160205T090000Z DTEND:20160205T103000Z CLASS:PUBLIC CREATED:20160121T081638Z DESCRIPTION:"Planung\, Aufbau und Betrieb der ersten ECRH - Anlage an ASDEX Upgrade " \n Fritz Leuterer \n\n"Electron heat transport studies with ECR H1: stiffness and critical gradient"\n Francois Ryter \n\n"Control of MHD instabilities by ECRH on ASDEX Upgrade"\n Hartmut Zohm \n\n"Co-existence o f ECRH1 and ECRH2: W accumulation and high power experiments"\n Jörg Stob er\nVortragende(r): Fritz Leuterer\, Francois Ryter\, Hartmut Zohm und Jö rg Stober LAST-MODIFIED:20160419T092614Z LOCATION:Garching\, Raum: Hörsaal D2 (Übertragung nach HGW S1) SUMMARY:Institutskolloquium: Kolloquium zum Abschluss des ECRH1 Betriebs URL;VALUE=URI:https://www.ipp.mpg.de/events/4058/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5072/4160223 DTSTART:20160318T093000Z CLASS:PUBLIC CREATED:20160316T082651Z DESCRIPTION:The steep gradients at the plasma edge in a tokamak result in E dge Localized Modes (ELMs)\, which when extrapolated to burning plasma con ditions\, will melt the first wall. In order to reduce the steep gradients to below the instability limit\, resonant magnetic perturbation (RMPs)\, a 3D-field magnetic field perturbation are introduced. RMPs can succesfull y suppress or mitigate ELMs through an increase in particle transport. In this presentation\, I will first address how RMPs affect the magnetic topo logy at the plasma edge and whether this change in topology can explain th e observed changes in particle transport and confinement. Next\, I will di scuss\, how inadvertently RMPs also increase particle transport in the pla sma core\, which affect global confinement and the ultimate fusion gain fa ctor.\nVortragende(r): Prof. Saskia Mordijck (The College of William and M ary) LAST-MODIFIED:20160419T092704Z LOCATION:IPP Greifswald\, Raum: HGW S1 (Übertragung Hörsaal D2) SUMMARY:Institutskolloquium: Changes in transport with Resonant Magnetic Pe rturbations in Tokamaks URL;VALUE=URI:https://www.ipp.mpg.de/events/5072/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5309/4160223 DTSTART:20160415T083000Z CLASS:PUBLIC CREATED:20160415T072805Z DESCRIPTION:A two million year old signal of 60Fe was detected in several t errestrial deep-sea archives and in lunar samples. This long-lived isotope is not produced on Earth\, however\, it is generated in massive stars and ejected during supernova explosions. The recent injection of 60Fe into th e solar system coincides with the formation of the Local Bubble - a large cavity in the interstellar medium produced by multiple supernovae - into w hich our solar system is embedded. The most likely sources are stellar exp losions within a moving group that passed the solar neighborhood\, and who se surviving members are now in the Sco-Cen association. We have traced th e trajectories of the member stars back in time and calculated the most pr obable explosion sites of the perished stars. By determining their masses and explosion times\, we found a sequence of supernovae starting 13 Myr ag o. With analytical and numerical methods we modeled the Local Bubble and\, as a consequence of its formation\, the terrestrial 60Fe signature. Simil ar calculations with another long-lived radionuclide\, 26Al\, show only a marginal supernova-signal. Accelerator mass spectrometry measurements of 2 6Al within samples of four deep-sea sediment cores from the Indian Ocean c onfirm this result. The data decreases exponentially towards larger depths as expected from 26Al produced in the Earth's atmosphere\, which hides a contribution from nearby supernovae.\nVortragende(r): Dr. Jenny Feige LAST-MODIFIED:20160419T092406Z LOCATION:Greifswald\, Raum: HGW S1 (Übertragung Hörsaal D2) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: Global deposition of radioactive nuclides from the most recent near-Earth supernovae URL;VALUE=URI:https://www.ipp.mpg.de/events/5309/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5314/4160223 DTSTART:20160529T083000Z CLASS:PUBLIC CREATED:20160415T084132Z DESCRIPTION:Mit unserer Sprache beschreiben wir unsere Wirklichkeit. Was wi r benennen ist auch vorhanden. Für was wir kein Wort haben\, kann sich au ch unser Hirn schlecht vorstellen. Unser Sprachgebrauch ist Teil unserer W irklichkeit und sie beeinflusst unsere Wahrnehmung. Soweit die Sprachphilo sophie.\nVortragende(r): Tanja Berger LAST-MODIFIED:20160622T072249Z LOCATION:IPP Greifswald\, Raum: HGW S1 (Übertragung Hörsaal D2) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: Die Macht der Sprache URL;VALUE=URI:https://www.ipp.mpg.de/events/5314/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5436/4160223 DTSTART:20160603T083000Z CLASS:PUBLIC CREATED:20160503T125220Z DESCRIPTION:Brains are highly interconnected networks of millions to billio ns of neurons. For a century\, we have not been able to map these connecti vity networks. Only recently\, using novel electron microscopy techniques and machine-learning based data analysis\, the mapping of neuronal network s has become possible at a larger scale. This new field of connectomics is still limited by technology and requires next-generation human-machine in teraction for data analysis\, but it is already starting to provide exciti ng insights into how neuronal circuits operate in the brain. Our goal is t o make connectomics a high-throughput screening technique for neuroscience \, to use connectomes for discovering brain-implemented algorithms\, which may inspire novel machine learning\, to map the imprints of sensory exper ience onto neuronal networks in the brain\, and to investigate connectome alterations in models of psychiatric disease.\nVortragende(r): Dr. Helmsta edter LAST-MODIFIED:20160504T104722Z LOCATION:Garching\, Raum: Hörsaal D2 (Übertragung nach HGW S1) SUMMARY:Institutskolloquium: Connectomics: The dense reconstruction of neur onal networks URL;VALUE=URI:https://www.ipp.mpg.de/events/5436/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5311/4160223 DTSTART:20160610T083000Z CLASS:PUBLIC CREATED:20160415T082415Z DESCRIPTION:This talk follows the annoucement made on February 11th by the LIGO Scientific Collaboration. On September 14\, 2015\, we detected the gr avitational waves emitted by the final few orbits and merger of two black holes. In this talk\, I present the main results\, as well as some of the "behind the scenes" details of the discovery and subsequent analysis. Refe rence: P. Abbott et al.\, Phys. Rev. Lett. 116\, 061102\, 2016.\nVortragen de(r): Prof. Bruce Allen LAST-MODIFIED:20160510T063752Z LOCATION:Garching\, Raum: Hörsaal D2 (Übertragung nach HGW S1) SUMMARY:Institutskolloquium: Direct observation of gravitational waves from the merger and inspiral of two black holes URL;VALUE=URI:https://www.ipp.mpg.de/events/5311/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5551/4160223 DTSTART:20160617T083000Z CLASS:PUBLIC CREATED:20160519T085848Z DESCRIPTION:Die Bundesregierung versucht\, mit Hilfe von Solar-und Windener gie eine alternative Stromversorgung zu Kernenergie und Kohleverstromung z u schaffen. Dazu dient das „Erneuerbare-Energien-Gesetz EEG“ aus dem J ahre 2000. Hinzu kam der 2011 im Eiltempo beschlossene Ausstieg aus der Nu tzung der Kernenergie. Jetzt zeigt sich\, dass die „Wende“ große Risi ken bei der Versorgungssicherheit\, der Finanzierbarkeit\, den Auswirkunge n auf die wirtschaftliche Entwicklung und die soziale Gerechtigkeit birgt. Diese Wende droht an ihren Widersprüchen zu scheitern. \nSelbst der zust ändige Bundesminister für Wirtschaft und Energie\, Sigmar Gabriel\, äu ßerte im April 2014: “Die Wahrheit ist\, dass die Energiewende kurz vor dem Scheitern steht.”\nIm Vortrag wird versucht\, die Probleme zu benen nen und Lösungen zu finden.\n\nDie Energieversorgung muss dem Wohl des Ga nzen dienen und dem Industriestandort Deutschland nutzen. Ein Blackout wä re eine Katastrophe für das ganze Land\, er muss unter allen Umständen v ermieden werden.\n\nDer Vortragende ist Autor des Buches „Risiko Energie wende - Wege aus der Sackgasse“\, Springer Verlag 2015.\nVortragende(r): Prof. Konrad Kleinknecht LAST-MODIFIED:20160622T073144Z LOCATION:Garching\, Raum: Seminarraum L6\, 2. Stock Süd (Übertragung nach HGW S1) SUMMARY:Institutskolloquium: Wird die deutsche „Energiewende“ scheitern ? URL;VALUE=URI:https://www.ipp.mpg.de/events/5551/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5486/4160223 DTSTART:20160722T083000Z CLASS:PUBLIC CREATED:20160511T122238Z DESCRIPTION:Sustainable energy generation by means of wind or from solar ra diation through photovoltaics or concentrated solar power will be a signif icant part of the energy mix in 2025. Intermittency (due to e.g. day/night cycle) as well as regional variation of these energy sources requires mea ns to store and transport energy on a large scale. A promising option is c reating artificial solar fuels (or CO2 neutral fuels) with sustainable ene rgy\, which can easily be deployed within the present infrastructure for c onventional fossil fuels.\nA candidate raw material would be CO2 itself (f itting in carbon capture and utilization\, CCU\, strategies). Presently\, no efficient schemes are yet available for the conversion of CO2 into fuel s. A plasma chemical approach potentially offers high energy efficiency (u p to 90%) due to selectivity in the reaction processes that can be tailore d via its inherently strong out-of-equilibrium processing conditions. At t he same time\, it is characterized by efficient and fast power switching\, low investment costs\, no scarce materials required\, and high power dens ity\, which are all advantageous for addressing intermittency. In this pre sentation\, the plasma chemical approach will be introduced and examples w ill be discussed of research carried out at the DIFFER to ultimately enabl e a scale up to industrial applications.\nIn particular\, a common microwa ve reactor approach is evaluated experimentally with Rayleigh scattering a nd Fourier transform infrared spectroscopy to assess gas temperatures (up to ~3000 K) and conversion degrees (up to 30%)\, respectively. The results are interpreted on basis of estimates of the plasma dynamics obtained wit h electron energy distribution functions calculated with a Boltzmann solve r. It indicates that the intrinsic electron energies are higher than is fa vorable for preferential vibrational excitation due to dissociative excita tion\, which causes thermodynamic equilibrium chemistry still to dominate the initial experiments. Pulsing the power is shown to decrease gas temper atures and improve efficiency. Novel reactor approaches are proposed to ta ilor the plasma dynamics to achieve the non-equilibrium in which vibration al excitation is dominant.\nVortragende(r): Gerard van Rooij LAST-MODIFIED:20160517T082626Z LOCATION:Garching\, Raum: Hörsaal D2 (Übertragung nach HGW S1) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: Efficient CO2 reduction in microwave plasma vi a vibrational excitation URL;VALUE=URI:https://www.ipp.mpg.de/events/5486/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/5073/4160223 DTSTART:20160916T083000Z CLASS:PUBLIC CREATED:20160316T083119Z DESCRIPTION:Eine der Kernfragen der Sozialwissenschaften besteht in der Erk lärung der ungeheuren wirtschaftlichen Dynamik\, die sich seit dem Beginn der Industrialisierung im späten 18. Jahrhundert entfaltet. In meinem Vo rtrag zeige ich\, dass die Orientierung an einer als offen aber auch mit R isiken behafteten Zukunft ein wichtiger Aspekt der Dynamik des Kapitalismu s ist. Anhand von Innovationsprojekten und Beispielen aus anderen Bereiche n wirtschaftlichen Handelns verdeutlicht der Vortrag\, welche Rolle imagin ierte Zukünfte für wirtschaftliches Wachstum aber auch für wirtschaftli che Krisen spielen.\nVortragende(r): Prof.D. Jens Beckert LAST-MODIFIED:20160913T072357Z LOCATION:Garching\, Raum: Seminarraum L6\, 2. Stock Süd (Übertragung nach HGW S1) SUMMARY:Institutskolloquium: Imaginierte Zukunft. Wie die Dynamik des Kapit alismus durch (technologische) Narrative und Fiktionen vorangetrieben wird . URL;VALUE=URI:https://www.ipp.mpg.de/events/5073/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/6699/4160223 DTSTART:20161014T083000Z DTEND:20161014T093000Z CLASS:PUBLIC CREATED:20160926T144010Z DESCRIPTION:The large mass imbalance between ions andelectrons — and the resulting separation of the two species’ length and timescales — is a cornerstone of traditional plasma physics.  Therefore\, to consider the n ovel behavior ofa “pair plasma”\, comprising particles with opposite c harge but equal mass\, isto revisit much of plasma physics from the ground up.  To date\, over a thousand journal articleshave been devoted to this topic\, describing a variety of analytical andcomputational treatments\, but the experimental side of the investigation isstill in its nascence.  Laboratorycreation and confinement of electron/positron plasmas would enab le the firsttests of many theory and simulation predictions (e.g.\, the st abilization ofanomalous transport mechanisms)\, with implications for our understanding notonly of pair plasmas (and astrophysical phenomena in whic h they play a role)but also of traditional electron/ion plasmas. This is the goal of the APEX/PAX (APositron-Electron eXperiment/PositronAccumulati on eXperiment) project\, in which a world-class positron beam(NEPOMUC\, at FRM-II) is being combined with state-of-the-art techniques fromnon-neutra l plasma physics.  This talkwill give an overview of milestones achieved in the past several years\,including the demonstration of efficient ExB in jection and subsequentconfinement (τ = 3-5 ms) of cold positrons in a dip ole magnetic field\, as wellas the upcoming upgrade from a supported perma nent magnet to a supported HTSC(high-temperature superconductor) coil\, th en to a levitated HTSC coil suitablefor the simultaneous confinement of el ectrons and positrons.\nVortragende(r): Dr. Eve Stenson LAST-MODIFIED:20160926T144027Z LOCATION:Garching und Greifswald\, Raum: Hörsaal D2 (Übertragung nach HGW S1) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: En route to electron/positron pair plasmas URL;VALUE=URI:https://www.ipp.mpg.de/events/6699/4160223 END:VEVENT BEGIN:VEVENT DTSTAMP:20261007T042338Z UID:https://www.ipp.mpg.de/events/7348/4160223 DTSTART:20161118T093000Z DTEND:20161118T103000Z CLASS:PUBLIC CREATED:20161014T121127Z DESCRIPTION:The concept of Darwinian evolution relies on vertical gene tran sfer from one generation to the next. Such evolution brings about ever more species that originated from a universal common ancestor\, the very first species. In contrast\, it is hypothesized that in the era ju st before that species existed\, life was fundamentally collective with genetic material freely shared through massive horizontal gene transfe r (HGT). How did the era of collective evolution come to an end and sta rt the Darwinian era we live in today? Here we propose a stochastic model dynamics that offers a fundamental mechanism for such a way out of collective evolution. The model suggests that HGT-dominated dynamics may have been intermittently interrupted by selection-driven processes during which genotypes became fitter and decreased their inclination towards HGT. Stochastic switching in the population dynamics with thr ee-point (hypernetwork) interactions may have destabilized the HGT-domi nated collective state and essentially contributed to the emergence of vertical descent and the first well-defined species in early evolution. A systematic nonlinear analysis of the stochastic model dynamics suppo rts this view. Our findings thus suggest a viable direction out of earl y collective evolution\, potentially enabling the start of individualit y and vertical Darwinian evolution.\nVortragende(r): Prof. Dr. Marc Tim me LAST-MODIFIED:20161014T121737Z LOCATION:Garching und Greifswald\, Raum: Hörsaal D2 (Übertragung nach HGW S1) ORGANIZER;CN=IPP:mailto: SUMMARY:Institutskolloquium: Transition to Darwinian evolution - towards th e origin of the very first species URL;VALUE=URI:https://www.ipp.mpg.de/events/7348/4160223 END:VEVENT END:VCALENDAR