A large area transition radiation detector for the NOMAD experiment

A Large Area Transition Radiation Detector for theNOMAD

A Transition Radiation Detector to identify electrons at 90% ef-ciency with a rejection factor against pions of 10 3 on an area of 2:85 2:85 m 2 has been constructed for the NOMAD experiment. Each of its 9 modules includes a 315 plastic foil radiator and a detector plane of 176 vertical straw tubes lled with a xenon-methane gas mixture. Details of the design, construction and operation of the d...

The Transition Radiation Detector for the Pamela Experiment

Results from the NOMAD Experiment

The NOMAD experiment has been searching for νμ ↔ ντ oscillations by looking for the appearance of τ − in events from the CERN-SPS neutrino beam. With some improvements in the analysis techniques with respect to the previous published results and including data from 1998 run, no evidence for oscillations is found, resulting in an updated limit on the oscillation probability of P (νμ ↔ ντ ) < 0.5...

Calibration of the ALICE Transition Radiation Detector

The Transition Radiation Detector (TRD) belongs to the central barrel detectors of the ALICE experiment at the LHC at CERN. It is composed of 540 large area drift chambers, with a total of 1181952 readout pads (1728 or 2304 per chamber). To ensure the optimal performance of the detector, designed for electron/pion identification and charged particle tracking, including triggering for high-pt el...

The Drift Chambers Of The Nomad Experiment

We present a detailed description of the drift chambers used as an active target and a tracking device in the NOMAD experiment at CERN. The main characteristics of these chambers are a large area (3 × 3 m), a self supporting structure made of light composite materials and a low cost. A spatial resolution of 150 μm has been achieved with a single hit efficiency of 97% . 1 on leave from the Labor...