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Study of a bulk-Micromegas with a resistive anode |
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| Authors: | FAN Sheng-Nan ; FAN Rui-Rui WANG Bo QI Hui-Rong ; OUYANG Qun YI Fu-Ting ZHAO Tian-Chi CHEN Yuan-Bo LIU Mei LIU Rong-Guang ZHANG Jian |
| Institution: | 1,3 1 Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,China 2 Graduate University of Chinese Academy of Sciences,Beijing 100049,China 3 State Key Laboratory of Particle Detection and Electronics,Beijing 100049,China 4 Department of Physics,University of Washington,Seattle,WA98195,USA |
| Abstract: | The design and performance of a Micromegas with a resistive anode are presented in this paper.A thin resistive sheet with volume resistivity of 10 12 Ω· cm is glued onto the readout electrode surface and its performance is investigated by using a 55 Fe 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 Micromegas 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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