M2 NPAC – Laboratory CEA Saclay Stefano PANEBIANCO – Neutron-gamma discrimination in fission reactions (1 or 2 teams) Micromegas detector characterization: from X to cosmic rays Gamma spectrometry for material characterization Muon lifetime measurement (organic scintillators or Water tank) Spectrometry and solar light

M2 NPAC – Laboratory CEA Saclay Neutron-gamma discrimination γ γ Spontaneous fission source: Emission of fission fragments, gammas and neutrons Aim of the game: discriminate neutrons from gammas Two complementary techniques: -Time Of Flight (TOF) -Pulse Shape Discrimination (PSD) Aim of the game: discriminate neutrons from gammas Two complementary techniques: -Time Of Flight (TOF) -Pulse Shape Discrimination (PSD) Tools of the game: scintillators + PMT -Inorganic: NaI(Tl); BaF 2 -Plastics: NE213 -Organic liquid doped with Gd/Hf Tools of the game: scintillators + PMT -Inorganic: NaI(Tl); BaF 2 -Plastics: NE213 -Organic liquid doped with Gd/Hf Data acquisition and analysis -DAQ card: MATACQ (signal sampling) -Analysis: ROOT code Data acquisition and analysis -DAQ card: MATACQ (signal sampling) -Analysis: ROOT code Supervisors: Stefano Panebianco, Vincent Andrieux

M2 NPAC – Laboratory CEA Saclay Micromegas detector caracterization : from X rays to cosmic rays Micromegas : gas detector invented in 1996 for particle physics Goals: Physics of gas detectors Measure of homogeneity and efficiency of a micromegas prototype for the CLAS12 (JLab) experiment with a « cosmic bench » Goals: Physics of gas detectors Measure of homogeneity and efficiency of a micromegas prototype for the CLAS12 (JLab) experiment with a « cosmic bench » CLAS12 Micromegas prototypes electronics and acquisition system, « cosmic bench » Supervisors: David Attié, Francesca Belloni, Mariam Kebbiri

M2 NPAC – Laboratory CEA Saclay Gamma spectrometry for material characterization Physics : γ-matter interaction (photoelectric peak, Compton effect…) Radioactive source Analysis of Excitation energy spectra Physics : γ-matter interaction (photoelectric peak, Compton effect…) Radioactive source Analysis of Excitation energy spectra Goals: Characterization of a germanium detector Calibration Estimation of efficiency Background noise reduction Use of NIM electronics “Modern” acquisition system Goals: Characterization of a germanium detector Calibration Estimation of efficiency Background noise reduction Use of NIM electronics “Modern” acquisition system Supervisors: Magdalena Kielinska, Jean-François Lemaître

M2 NPAC – Laboratory CEA Saclay Muon lifetime measurement: organic scintillators Supervisors: Philippe Schune, Julie Malclès, Emmanuel Moulin, Maxime Pequignot

M2 NPAC – Laboratory CEA Saclay Muon lifetime measurement: Water tank Supervisors: Philippe Schune, Julie Malclès, Emmanuel Moulin, Maxime Pequignot

M2 NPAC – Laboratory CEA Saclay Main topics : Optical system CCD camera, signal, noise, signal-to-noise ratio Spectrometry, gratings, spectral resolution, light scattering Information processing, data reduction, spectral analysis, calibration Equipment : High resolution grating spectrometer Large array CCD detector Acquisition computer Equatorial mount Laboratory devices : spectral lamps, filters,… Spectrometry and Solar light The main goal is to produce a calibrated spectrum of the Sun in the visible (400 nm to 800 nm) and to analyse it (temperature, spectral class, abundances…) Supervisors:, Pascal Gallais, Samuel Ronayette

M2 NPAC – Laboratory CEA Saclay Stefano PANEBIANCO – Neutron-gamma discrimination in fission reactions (1 or 2 teams) Micromegas detector characterization: from X to cosmic rays Gamma spectrometry for material characterization Muon lifetime measurement (organic scintillators or Water tank) Spectrometry and solar light A car may be convenient even though not required. Buses are available from “Le Guichet” RER station