Title of article
Two large-area anode-pad MICROMEGAS chambers as the basic elements of a pre-shower detector
Author/Authors
Aphecetche، نويسنده , , L. and Delagrange، نويسنده , , H. and DʹEnterria، نويسنده , , D.G. and Le Guay، نويسنده , , M. and Li، نويسنده , , X. and Martinez Sarriٍn، نويسنده , , G. and Mora، نويسنده , , M.J. and Pichot، نويسنده , , P. and Roy، نويسنده , , D. and Schütz، نويسنده , , Y.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2001
Pages
11
From page
502
To page
512
Abstract
The design of a detector based on MICROMEGAS (MICRO MEsh GAseous Structure) technology is presented. Our detector is characterized by a large active area of 398×281 mm2, a pad read-out with 20×22 mm2 segmentation, and an uniform amplification gap obtained by insulating spacers (100 μm high and 200 μm in diameter). The performances of several prototypes have been evaluated under irradiation with secondary beams of 2 GeV/c momentum charged pions and electrons. We consider such a detector as the basic element for a pre-shower detector to equip the PHOton Spectrometer (PHOS) of the ALICE experiment. Its assets are modularity, small amount of material, robustness and low cost.
Keywords
Gas chamber , direct photons , Micromegas , Micro-pattern detector , Heavy-ion collisions , Tracking detector
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Serial Year
2001
Journal title
Nuclear Instruments and Methods in Physics Research Section A
Record number
2189221
Link To Document