Measurement Of The Detection Efficiency Of TGC Detectors And The Establishment Of A Hodoscope System

The Large Hadron Collider (LHC) is a proton-proton collider under construction at the European Organization for Nuclear Research (CERN). Two 7 TeV proton beams will collide at the highest energy ever reached in a particle accelerator with the design luminosity of 10³⁴cm^-2S^-1. The high energy and luminosity of the LHC will brings more challenges and offers a large range of physics opportunities, such as searching for the physics beyond the Standard Model of fundamental interactions and discovery the Higgs mechanism for electroweak symmetry breaking.Four experiments have been approved and are under construction at the colliding points of LHC: ATLAS (A Toroidal LHC Apparatus) , CMS (Compact Muon Solenoid) , ALICE (A Large Ion Collider Experiment) and LHCb. Two experiments, ATLAS and CMS will study proton-proton collisions for searching Higgs particle. The Alice experiment is designed to study heavy ion collisions, when heavy ion beams will be injected into the LHC. The fourth experiment, LHCB, will operate with only one proton beam hitting stationary targets, with the goal of measuring b quark production.ATLAS is a huge general-purpose particle detector which composed by a magnetic system, an inner tracker, a calorimetric system, a muon spectrometer, a trigger and data acquisition (DAQ) system. ATLAS detector is a cylindrical shape, totally 44 m long, 22 m high and weighs 7000 tons, will be installed on one colliding point of LHC. It was designed to exploit the full discovery potential of LHC, to search for Higgs particle and heavy W' and Z' objects, for super-symmetric particles, for compositeness of the fundamental fermions, and to investigate the CP violation in B-physics. The ability to cope with a broad variety of possible physics processes is expected to maximize the detector's potential for discovery of new unexpected physics.The task of the ATLAS trigger system is to reduce the input beam related rate of 10⁹ Hz at the highest luminosity to about 100 Hz for permanent storage. To handle this task the ATLAS trigger and data-acquisition (DAQ) system is based on three...