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Study of a bulk-Micromegas with a resistive anode
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DOI：10.1088/1674-1137/36/9/010.png)
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Abstract
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The design and performance of a Micromegas with a resistive anode are presented in tins paper. A thin resistive sheet with volume resistivity of 10(12) Omega.cm is glued onto the readout electrode surface and its performance is investigated by using a Fe-55 X-ray radioactive source in the operation gas of argon and isobutene mixtures (Ar/Iso=95/5). The gas gain at different mesh high voltage, counting rate and working time are given. Energy spectra at different working voltages are measured and the results are discussed. We have oberved that a Micrornegas with a resistive anode can be operated at higer gain than a standard Micromegas without sparks.
Keywords:
Micromegas
resistive anode
sparks
gas gain
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