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Laboratory for Particle Physics (LTP)
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Updated: 19.05.2010 
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Opportunities for students The Laboratory of Particle Physics offers various opportunities to students for practical training, semester projects and postgraduate theses. This page is constantly updated and gives an overview of these possibilities. Practical Training - nothing available at the moment - Semester Projects 1. Fine-tuning of the MEG Muon Beam and the Setting-up of a Positron Beam for Calibration Purposes The MEG experiment at PSI searches for the decay mu -> e gamma, which is forbidden in the Standard Model, yet in more recent theories such as Supersymmetry is expected. We utilize one of the highest intensity muon beams for the search, as well as pion and proton beams for the calibration of our detector. We have successfully collected data over the past two years and now further calibration and optimization is planned. The student will participate in the foreseen optimization measurements and in addition will help to set up a positron beam, to be used to study the detector response to high-energy positrons. Contact: Peter-Raymond Kettle 2. Thermometrie des klimatisierten nEDM Experiments • Kalibration von Thermometern mittels existierenden Versuchsaufbau Contact: Schmidt-Wellenburg Philipp 3. Messung der Strahlungsfestigkeit von CFK Kupferbeschichtetes Kohlefaserplastik ist ein innovatives Material um leichte, nicht magnetische Vakuumkammern zu bauen. Häufig werden Vakuumkammern in einem Strahlenbelasteten Umfeld eingesetzt. • Bestrahlung von CFK-Proben (Neutronen, Protonen) Contact: Schmidt-Wellenburg Philipp 4. Characterization of the HP8500 Photomultiplier with Radioactive Sources The HP8500 multianode photomultiplier from HAMAMATSU is selected for measurements of the gamma ray polarization with the POLAR instrument onboard of the Chinese space station TG2. Differences in the sensitivity between 64 individual channels of the photomultiplier need to be determined and corrected for the best determination of the photon polarization level. The measurement will use 241Am alpha particle source on top of the plastic scintillator coupled to the photomultiplier at the center of each anode. Contact: Ilia Britvitch 5. Proton Beam Uniformity Measurement with the PROPIX Ionization Chamber The PROPIX Ionization Chamber consists of 400 pixels covering area typical for beam size dimensions of the PSI Proton Irradiation Facility PIF. It was constructed with the in house developed GOTTHARD readout chip also used at SLS and XFEL. The instrument with its very high sensitivity and positional accuracy enables for fast measurements of the beam profiles at the target location. Several tests for different beam setups will be performed and data will be analyzed for future PIF experiments carried out by the users from CERN and ESA. Contact: Wojtek Hajdas 6. Response of the Low Energy Electron Detector LEED to background of the high energy protons The Low Energy Electron Detector is a small instrument to be installed on the satellites for studies of the radiation belts and hot plasma clouds in the Earth magnetosphere. The LEED prototype has been already tested using electrons and X-rays in its nominal energy range. In the next step the measurements with the high energy protons will be performed. They will determine the instrument response to the possible proton background i.e. in the radiation belts or from the solar energetic particle events. The tests will be performed in the Proton Irradiation Facility using energies typical for the proton environment in space. Contact: Wojtek Hajdas Postgraduate Theses (Master's) 1. Charakterisierung von Bornitrit Keramik als Isolatorring des nEDM Experiments • Testversuche bzgl. elektrischer und Vakuum relevanter Charakteristika Anforderungen: • Freude am Experimentieren Contact: Schmidt-Wellenburg Philipp
2. Verbesserung der Detektion-Effizienz durch Verkleinerung der Entleerungszeit der UCN aus der nEDM Kammer durch Optimierung der Flächenstruktur des Isolatorrings • Monte Carlo Optimierung der Entleerungszeit mit komplexeren Flächenstrukturen Anforderungen: Contact: Zsigmond Geza
General E-mail contact: Klaus Kirch
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