LAPP - Annecy le Vieux Particle Physics Laboratory. Activity report 2004-2005

LAPP is a high energy physics laboratory founded in 1976 and is one of the 19 laboratories of IN2P3 (National Institute of Nuclear and particle physics), institute of CNRS (National Centre for Scientific Research). LAPP is joint research facility of the University Savoie Mont Blanc (USMB) and the CNRS. Research carried out at LAPP aims at understanding the elementary particles and the fundamental interactions between them as well as exploring the connections between the infinitesimally small and the unbelievably big. Among other subjects LAPP teams try to understand the origin of the mass of the particles, the mystery of dark matter and what happened to the anti-matter that was present in the early universe. LAPP researchers work in close contact with phenomenologist teams from LAPTh, a theory laboratory hosted in the same building. LAPP teams also work since several decades at understanding the neutrinos, those elementary almost massless particles with amazing transformation properties. They took part in the design and realization of several experiments. Other LAPP teams collaborate in experiments studying signals from the cosmos. This document presents the activities of the laboratory during the years 2004-2005: 1 - Presentation of LAPP organisation and operation; 2 - Experimental groups: ATLAS - A Toroidal LHC Apparatus; CMS - Compact Muon Solenoid; Linear collider R and D; Positronium Physics and positrons pulsed beam; BABAR - Symmetry study in the B-B-bar system; LHCb - The Large Hadron Collider beauty experiment; OPERA - Oscillation Project with Emulsion-tracking Apparatus; AMS - Alpha Magnetic Spectrometer; HESS - High Energy Stereoscopic System; VIRGO; MACFLY - Measurement of Air Cherenkov and Fluorescence Light Yield; 3 - Projects in partnership: LAVISta - Annecy le Vieux laboratory for vibration and stabilisation studies; Mesh node; Valorisation; 4 - Support to experiments: Electronics department, Computers department, Mechanics department, Administration; 5 - Transverse activities: Scientific life, experimental and technical seminars, training, teaching, communication, publications, PhDs and accreditations to supervise research