Ruprecht Karls Universität Heidelberg
Bild Institut
Physikalisches Institut
Im Neuenheimer Feld 226
69120 Heidelberg

Tel: +49 6221-54 19600
Fax: +49 6221-54 19540
info@physi.uni-heidelberg.de
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Stellenangebote - Bachelorarbeiten

Bachelorarbeiten

Development of a new pixel detector in High Voltage-MAPS technologyAndré Schöning
Our group is developing a new pixel detectors based on the High-Voltage MAPS (monolithic active pixel detector) technology. This new technology is in many respects superior compared to standard hybrid silicon detectors. It will be used for the new Mu3e experiment and is considered for the LHC-High Luminosity Upgrades. We offer several bachelor and master theses in this area. This project also qualifies as Projektpraktikum.

Experimentelle und theoretische Tests der Quantenmechanik bei niedrigsten EnergienMaarten DeKieviet
Das in Heidelberg entwickelte 3He-Atomstrahl-Spinecho-Spektrometer ermöglicht das Vermessen kleinster Energieänderungen (~100 peV) in der Wechselwirkung zwischen Atomen und Felder oder Materie. Das Experiment ist in seiner Form weltweit einzigartig und erforscht derzeit:
  • Casimir Kräfte und Quantenreibung
  • Nicht-Newtonische Gravitation
  • Axion-Suche (Dark Matter Kandidat)
  • Geometrische Phasen
Für diese spannenden und grundlegenden physikalischen Fragen können wir Hilfe gebrauchen, sowohl am Experiment, als auch bei der Theorie. Interesse mit zu machen? Dann meldet euch bei:

Planung und Aufbau vom neuen GIHAS-Experiment am CAM Maarten DeKieviet
In dem gerade neu fertig gestellten Gebäude INF225, dem „Center for Advanced Materials (CAM)“, soll eine Atomstrahl-Apparatur aufgebaut werden für „Grazing Incidence He Atom Scattering“. Dieses GIHAS-Experiment ist eine Weiterentwicklung des erfolgreichen 3He-Atomstrahl-Spinecho-Spektrometer, das am Physikalischen Institut (INF226) entwickelt wurde und dort für die Grundlagenforschung eingesetzt wird. Das GIHAS soll sich der Erforschung der Oberflächendynamik organischer Materialien widmen und baut auf ein existierendes Flugzeit-Spektrometer auf. Ziel dieser BSc-Arbeit ist es das letztere ins neue Gebäude auf zu bauen, unter Berücksichtigung von den Randbedingungen, die die neuen Modalitäten verlangen. Es gibt also nicht nur viel Erfahrung zu sammeln beim „hands-on“ Aufbauen vom Experiment im Labor, sondern auch beim detailgetreuen Planen von zukünftiger Hardware mit Hilfe moderner CAD-Programme.
    Lust mit an zu packen? Dann meldet euch bei:
Geometric algebra: The Grand Unifying Math !Maarten DeKieviet
Instead of having special mathematics for all the different fields of physics, Geometric Algebra (GA) supplies a unified and unifying mathematical language for the whole of physics. It not only allows for a geometric interpretation of the constituent elements, it uncovers hidden connections between the otherwise seemingly unrelated mathematical descriptions. „Why hasn‘t anyone told me that before?“ is a regularly heard, awing reaction of students being exposed to this language for the first time. We are currently searching for discrepancies with and extensions of the regular mathematical approach, both theoretically and experimentally. These are exciting times, come and join us!

Development of a test bench for the Pattern Recognition EngineSebastian Dittmeier,
The High-Luminosity LHC will be the most challenging environment to perform online particle track reconstruction in the world. The ATLAS experiment addresses this challenge using pattern recognition fully implemented in hardware using several thousands of custom-designed Associative Memory ASICs (Application-Specific Integrated Circuit), which have an individual comparison power of 3.75 Petabyte per second per chip. We want to build a test bench for the printed circuit board, the so-called Pattern Recognition Mezzanine, which hosts 20 of these ASICs and an extremely powerful FPGA (Field-Programmable Gate Array). We offer bachelor and master theses. If interested please contact S.Dittmeier or A.Schöning.

Development of a new pixel sensor readout systemSebastian Dittmeier,
For the Mu3e experiment, we are developing and characterizing High-Voltage monolithic active pixel sensors. We have developed a new FPGA readout board for the pixel sensors. Due to the generic nature of the readout board, it can also be used as a standalone readout system for lab studies of single sensors or test beam measurements operating a multi-layer beam telescope. We are looking for interested bachelor or master students to implement and test the interface, e.g. via Ethernet, between the FPGA and the data acquisition PC. This project allows for hands-on experience on the development of hard-, firm- and/or software.

Optimizing ultracold neutron storage for precision measurementsSkyler Degenkolb
Neutrons in beams can typically be observed for only a few milliseconds, due to velocities exceeding a kilometer per second. But with trapped "ultracold neutrons" we can make some of the most numerically precise measurements in modern physics, by storing extremely slow neutrons in a closed container for many minutes. Precision measurements with ultracold neutrons address such fundamental questions as: "Why does the universe contain matter, but not antimatter?", "What are the most fundamental symmetries obeyed in nature?", and "Is there new physics beyond the Standard Model that we have been unable to detect with colliders?" This project seeks to extend recent progress on storing ultracold neutrons for extremely long times, approaching the beta-decay lifetime of the neutron itself. The exploration and characterization of new wall-coating materials, such as fluoropolymers and crystalline diamond, is foreseen. A focus will be on designing and optimizing test apparatus, to identify the ultimate limits of such materials. Students interested in developing familiarity with vacuum, cryogenics, or precision measurements in neutron science are particularly encouraged. There may also be opportunities to participate in beamtime measurements, at the Institut Laue-Langevin's world-leading source of ultracold neutrons in Grenoble, France.


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