Monte carlo study of the physics performance of a digital hadronic calorimeter

A digital hadronic calorimeter using MICROMEGAS as active elements is a very promising choice for particle physics experiments at future lepton colliders. These experiments will be optimized for application of the particle flow algorithm and therefore require calorimeters with very fine lateral segmentation. A 1 m2 prototype based on MICROMEGAS chambers with 1x1 cm2 readout pads is currently being developed at LAPP. The GEANT4 simulation of the physics performance of a MICROMEGAS calorimeter is presented. The main characteristics, such as energy resolution, linearity and shower profile, have been carefully examined for various passive materials with pions over a wide energy range from 3 to 200 GeV. The emphasis is put on the comparison of the analog and digital readout.Comment: 8 pages, 5 figures, MPGD09 conferenc

Vitry-sur-Orne

Identifiant de l'opération archéologique : F1357200100153 Date de l'opération : 2001 (EX) La commune de Vitry-sur-Orne est située sur la rive gauche de l'Orne, affluent gauche de la Moselle, à 16 km au nord de Metz et à 10 km au sud de Thionville. La ZAC de la Plaine s'étend sur l'ancien ban du village disparu de « Vallange », sur une terrasse de l'Orne, à environ 20 m au-dessus du lit majeur de la rivière. Le substrat y est constitué de graviers calcaires recouverts par endroits de limon bru..

Vitry-sur-Orne – ZAC de la Plaine et dispositif d'assainissement

Identifiant de l'opération archéologique : F1357200100153 Date de l'opération : 2001 (EX) La commune de Vitry-sur-Orne est située sur la rive gauche de l'Orne, affluent gauche de la Moselle, à 16 km au nord de Metz et à 10 km au sud de Thionville. La ZAC de la Plaine s'étend sur l'ancien ban du village disparu de « Vallange », sur une terrasse de l'Orne, à environ 20 m au-dessus du lit majeur de la rivière. Le substrat y est constitué de graviers calcaires recouverts par endroits de limon bru..

Physics performances for Scalar Electrons, Scalar Muons and Scalar Neutrinos searches at CLIC

The determination of scalar leptons and gauginos masses is an important part of the program of spectroscopic studies of Supersymmetry at a high energy linear collider. In this talk we present results of a study of pair produced Scalar Electrons, Scalar Muons and Scalar Neutrinos searches in a Supersymmetric scenario at 3 TeV at CLIC. We present the performances on the lepton energy resolution and report the expected accuracies on the production cross sections and on the scalar leptons and gauginos masses.Comment: Linera Collider Workshop, LCWS11, 6 pages, 2 figures, 4 table

Physics performances for Z' searches at 3 TeV and 1.5 TeV CLIC

Extra neutral gauge bosons (Z') are predicted in many extensions of the Standard Model (SM). In the minimal anomaly-free Z' model (AFZ'), the phenomenology is controlled by only three parameters beyond the SM ones, the Z' mass and two effective coupling constants g'_Y and g'_{BL}. We study the Z' 5-sigma discovery potential in e+e- collisions at 1.4 and 3 TeV CLIC. Assuming LHC discovers a Z' of 5 TeV mass, the expected accuracies on the Z'mu+mu- couplings are presented. We discuss also the requirements on detector performance and beam polarization.Comment: 12 pages, CLIC Study repor

Sarrebourg – Golf du pays de Sarrebourg, parcours 9 trous

Identifiant de l'opération archéologique : F1357200100130 Date de l'opération : 2001 (EV) Le terrain, de 5 500 m2, est situé à 2 km à l'ouest du centre historique de la ville. Il s'agit d'une extension du golf existant. Aucun vestige archéologique n'y a été relevé

Status of the Micromegas semi-DHCAL

The activities towards the fabrication and test of a 1 m3 semi-digital hadronic calorime- ter are reviewed. The prototype sampling planes would consist of 1 m2 Micromegas chambers with 1 cm2 granularity and embedded 2 bits readout suitable for PFA calorime- try at an ILC detector. The design of the 1 m2 chamber is presented first, followed by an overview of the basic performance of small prototypes. The basic units composing the 1 m2 chamber are 32 \times 48 cm2 boards with integrated electronics and a micro-mesh. Results of character- ization tests of such boards are shown. Micromegas as a proportional detector is well suited for semi-digital hadronic calorimetry. In order to quantify the gain in perfor- mance when using one or more thresholds, simulation studies are being carried out, some of which will be reported in this contribution