Preliminary  Test  of  MICROMEGAS  Gaseous  Detector

LU  Chen-gui; DUAN  Li-min; #; YANG  He-run; MA  Peng; TANG Shu-wen; HU  Rong-jiang; LI  Zu-yu

doi:10.11804/NuclPhysRev.28.01.068

LU Chen-gui, DUAN Li-min, #, YANG He-run, MA Peng, TANG Shu-wen, HU Rong-jiang, LI Zu-yu, . Preliminary Test of MICROMEGAS Gaseous Detector[J]. Nuclear Physics Review, 2011, 28(1): 68-70. DOI: 10.11804/NuclPhysRev.28.01.068

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Preliminary Test of MICROMEGAS Gaseous Detector

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In this paper，A MICROMEGAS(MicroMeshGaseous Structure) detector with the amplification gap defined by stretching nylon fishing lines has been described . And its count plateau， gas gain and energy resolution in the condition of a ⁵⁵Fe Xray source and ArCO₂ (10%) mixture gases are measured as functions of mesh voltage. The count plateau approaches 280 V at the count rate of 10³ Hz. The discharge rate is less than 10^－4 when the gas gain is up to 10⁴. The energy resolution is 30% (FWHM) based on －800 V mesh voltage. The position resolution is less than 120 μm at the condition of the sensitive area (50 mm×50 mm) Printed Circuit Boards (PCB) and its strip pitch of 400 μm. The results can satisfy the basic demand of MICROMEGAS detector preliminary design.

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Preliminary Test of MICROMEGAS Gaseous Detector

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