The active detectors of the ALEPH hadron calorimeter at LEP consist of plastic streamer tubes developed in Frascati. The standard gas mixture for the operation of such devices is argon-isobutane ( 30 70). However, in underground experiments, for safety reasons, one has to reduce the hydrocarbon content. Therefore a study of the behaviour of streamer tubes operated with a Ar/CO2/n-pentane mixture has been performed. The influence of gas composition on efficiency, charge distribution and stability of operation has been investigated, and the results of these tests are presented.
|Titolo:||Operation of limited streamer tubes with the gas mixture Ar + CO2 + n-pentane|
|Data di pubblicazione:||1988|
|Digital Object Identifier (DOI):||10.1016/0168-9002(88)90599-2|
|Appare nelle tipologie:||1.1 Articolo in rivista|