[[PageOutline]] = GiBUU = The '''GiBUU project''' is aiming to provide an unified transport framework in the MeV and GeV energy regimes for * '''elementary reactions on nuclei''', as e.g. * '''electron''' + A, * '''photon''' + A, * '''neutrino''' + A , * '''hadron''' + A (especially '''pion''' + A) * and for '''heavy-ion collisions'''. For those reactions, the flow of particles is modelled within a [wiki:physicsInput Boltzmann-Uehling-Uhlenbeck (BUU) framework]. The relevant degrees of freedom are '''mesons''' and '''baryons''', which propagate in mean fields and scatter according to cross sections which are tuned to the energy range of 10 MeV to more than 10 GeV. The new numerical implementation, named '''GiBUU''' (standing for '''Gießen''' and '''BUU'''), is written in modular [http://www.kcl.ac.uk/kis/support/cit/fortran Fortran2003] and based upon a [http://subversion.tigris.org/ Subversion] version control system, which allows for a concise control over the full development phase of the code. The [wiki:GiBUU_Code_history history of the code] is rather long and reports about several main development steps. The present initiative accomplished a total rewrite of the source code in a present-day computing language. The main goals of this effort were ''modularization'' to allow for a more transparent multi-user development process, a strict ''reduction of global variables'' for a more transparent debugging procedure, an ''improved control over the development phase'' such that modifications can be backtracked and a ''unified standard version''. Therefore every member of the team works on the same single code version, albeit different temporal branches may coexist. Possible technical overhead is compensated by the benefit of a ''faster distribution of improvements and innovations'' and their ''enhanced sustainability''. GiBUU is being developed at the [http://theorie.physik.uni-giessen.de Institut für Theoretische Physik] of the [http://www.uni-giessen.de Justus-Liebig-Universität Giessen]. ---- == Physics Input == * [wiki:GiBUU_Code_history History of the code] * [wiki:physicsInput Learn more about our model] ---- == Selection of Publications, Talks and Seminars == * [wiki:Paper Publications and theses of the GiBUU team] * Presentations at ''DPG Spring Meeting 2008'' (March 3-7 [Freiburg], March 10-14 [Darmstadt]) * O.Buss: '''Exclusive results for the e-A -> X reaction''' * T.Gaitanos: '''Fragment formation in low energy proton-induced reactions within a hybrid BUU+SMM approach''' [/GiBUU/chrome/site/talks/dpg08/gaitanosHK20.6.ppt ppt] * T.Gaitanos: '''Production of fragments with finite strangeness in heavy-ion collisions within a BUU+SMM combined model''' [/GiBUU/chrome/site/talks/dpg08/gaitanosHK20.4.ppt ppt] * K.Gallmeister: '''Zeitabhängigkeit von Hadronisierung''' * M.Kaskulov: '''Hadron attenuation and color transparency at JLab energies''' * T.Leitner: '''Transport approach to the reconstruction of the neutrino kinematics in current oscillation experiments''' [/GiBUU/chrome/site/talks/dpg08/leitner_DPG_Darmstadt.pdf pdf] * T.Leitner: '''Nuclear aspects of neutrino energy reconstruction in current oscillation experiments''' [/GiBUU/chrome/site/talks/dpg08/leitner_DPG_Freiburg.pdf pdf] * B.Steinmüller: '''Stabilität des Kerns in quasiklassischer Theorie''' * J.Weil: '''Dileptonen-Produktion in gammaA- und pA-Reaktionen''' [/GiBUU/chrome/site/talks/dpg08/jweil.pdf pdf] * Poster presentation at ''SFB/Transregio Bonn-Bochum-Giessen Meeting'', Bonn, February 13th, 2008 [/GiBUU/chrome/site/talks/GiBUU_A4.pdf pdf] * Presentations at ''DPG Spring Meeting 2007'' (March 12-17): * O.Buss: '''Electron and pion scattering off nuclei''' [/GiBUU/chrome/site/talks/dpg07/buss_dpg07.pdf pdf] * T.Gaitanos: '''Hypernucleus formation in high-energy nuclear collisions''' [/GiBUU/chrome/site/talks/dpg07/gaitanos.ppt ppt] * K.Gallmeister: '''Time Dependent Hadronization via HERMES and EMC Data Consistency''' [/GiBUU/chrome/site/talks/dpg07/DPG07_gallmei.ppt ppt] * A.Larionov: '''Three-baryon collisions in BUU''' * T.Leitner: '''Neutrino induced pion production and nucleon knockout within the GiBUU transport model''' [/GiBUU/chrome/site/talks/dpg07/leitner_DPG2007.pdf pdf] * O.Buss: '''Code development & pion DCX''', Giessen, Seminar, July 2006. [/GiBUU/chrome/site/talks/bussFriday_July06.pdf pdf] == Movies == * '''pion induced reactions''' (low energy) ([wiki:movies movie #1]) * '''Heavy Ion collision''' ([wiki:moviesHIC movie#1] [wiki:moviesHIC2 movie#2]) * '''Photon absorption''' ([wiki:moviesPhoton movie]) ---- == The GiBUU Code == * '''[/GiBUU/chrome/site/Documentation/index.html GiBUU Documentation]'''[[BR]] * [wiki:tools Used software and tools] * Selected Links connected to (Fortran) Programming * [http://www.kcl.ac.uk/kis/support/cit/fortran Fortran informations] [[BR]] * O. Buss: '''Some short intro to modern Fortran''', Giessen, Seminar, May 2005. [http://theorie.physik.uni-giessen.de/~oliver/talks/fortran.pdf pdf] (for f77 devotees) [[BR]] * [wiki:programmingLiterature Literature] === [wiki:wikiInternal Internal pages] === ---- == The GiBUU team == Academical supervisor * [wiki:mosel Prof. Dr. Ulrich Mosel] Current members * [wiki:oliver Dipl.-Phys. Oliver Buss] * [wiki:theo Dr. Theodoros Gaitanos] * [wiki:kai Dr. Kai Gallmeister] * [wiki:murat Dr. Murat Kaskulov] * [wiki:alexei Dr. Alexei Larionov] * [wiki:tina Dipl.-Phys. Tina Leitner] * [wiki:janus Janus Weil] Collaborators * [wiki:luis Dr. Luis Alvarez-Ruso] [wiki:formemb Former members] === Contact === [http://theorie.physik.uni-giessen.de/ Institut für Theoretische Physik ] [[BR]] Justus-Liebig-Universität Giessen[[BR]] Heinrich-Buff-Ring 16[[BR]] D-35392 Giessen[[BR]] Tel.: +49 (0)641 99-33322[[BR]] [mailto:oliver.buss@theo.physik.uni-giessen.de Email to webmaster] [[BR]] [mailto:GiBUU@theo.physik.uni-giessen.de Email to GiBUU group] ---- {{{ #!html Site Meter }}}