EUROPEAN LABORATORY FOR PARTICLE PHYSICS CERN-PPE/97-21 8 January 1997 “DIAMOND” OVER-COATED MICROSTRIP GAS CHAMBERS FOR HIGH RATE OPERATION

Abstract

We describe the recent developments on the diamond-like carbon (DLC) over-coated Microstrip Gas Chambers made on drawn glass substrates. MSGC surface coating with thin DLC layer of stable and controlled resistivity was proposed to overcome the limitation of detector operation due to surface charging-up under avalanches. This brings also advantages for the detector manufacturing technology. The thin layer, deposited on top of a manufactured MSGC (over-coating), demonstrates excellent mechanical properties and very good stability. We report on recent measurements with DLC over-coated MSGCs of various surface resistivities (ranging from 10Ω/❒ to 10Ω/❒) on D-263 and AF45 glass substrates. Overcoated MSGCs exhibit good rate capability for the resistivity of the surface around 10Ω/❒. Stable operation up to 50 mC/cm of accumulated charge from avalanches has been demonstrated. Paper presented by W. Dominik at the 5th International Conference on Advanced Technology and Particle Physics, Villa Olmo, Como, Italy Oct. 7-11, 1996 a Ecole Nationale de Physique et de Chimie Industrielle de Paris, France b On leave of absence from Institute of Experimental Physics, University of Warsaw, Poland c INFN Legnaro, Padova, Italy d GRPHE, Université de Haute Alsace, Mulhouse, France

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Cite this paper

@inproceedings{Barr1997EUROPEANLF, title={EUROPEAN LABORATORY FOR PARTICLE PHYSICS CERN-PPE/97-21 8 January 1997 “DIAMOND” OVER-COATED MICROSTRIP GAS CHAMBERS FOR HIGH RATE OPERATION}, author={Amanda Barr and B . Boimska and Robin Bouclier and Maria Capeans and W . Dominik and Marion Hoch and G. Manzin and Leszek Ropelewski and Fabio Sauli and Ambrish Sharma}, year={1997} }