Test results from a precision drift chamber vertex detector prototype using dimethylether

Micro Drift Chamber as a precise vertex detector for the DIRAC experiment

A possible implementation of the Micro Drift Chamber (MDC) technique as a high resolution vertex detector in the upstream part of the DIRAC spectrometer was investigated in this paper. Simulations of different MDC layout were performed with the help of GARFIELD package. Based on the results of simulation the optimal chamber geometry and the gas mixture were selected. One cell prototype was prod...

Drift Chamber Vertex Detectors for Slc/lep*

The Time Expansion Chamber as High Precision Drift Chamber

With the principle of the time expansion chamber and the additional measurement of the position of the avalanche along the circumference of the anode wire it is possible to reconstruct the spatial distribution of the primary ionization in space. A position resolution for minimum ionizing tracks of a 5 30 urn is expected. First tests and concepts for vertex detectors are presented.

Results from the MAC 1 Vertex Chamber * HARRY

The design, construction, and performance characteristics of a high precision gaseous drift chamber made of thin walled proportional tubes are described. The device achieved an average spatial resolution of 45 pm in use for physics analysis with the MAC detector. The B-lifetime result obtained with this chamber is discussed. Invited talk presented at Workshop on Vertex Detectors: State of the A...

Cherenkov detector of the AMS experiment : test beam results with a prototype

The Alpha Magnetic Spectrometer (AMS) to be installed on the International Space Station (ISS) will be equipped with a proximity Ring Imaging Cherenkov (RICH) detector for measuring the velocity and electric charge of the charged cosmic particles. This detector will contribute to the high level of redundancy required for AMS as well as to the rejection of albedo particles. Charge separation up ...