MICROMEGAS Signal: Numerical Simulation Based on Neon-Isobutane and Neon-DME

Hamid Mounir¹, Seddik Bri²

¹Spectrometry Laboratory of Materials and Archaeomaterials (LASMAR), Faculty of Science, University Moulay Ismail, Meknes, Morocco.
²Electrical Engineering Departments, High School of Technology, ESTM, University My Ismail, Meknes, Morocco.

DOI: 10.4236/mi.2015.41001                

Abstract

Recent years, we have seen the development of many fields of gas detectors. The MICROMEGAS (Micro-Mesh Gas Structure) appeared as the very promising detector. It is a major family of position detectors in High Energy Physics. This work is done in normal (NTP) based gas mixtures: neon are noble gas and isobutane and DME (dimethyl-ether) as moderators gas (quenchers), using 55Fe as a radiation source (X-ray 5.9 keV). To address the modeling of MICROMEGAS detector, a descriptive model of different physical and geometrical phenomena MICROMEGAS was established by developing a simulation program to spreading the detector response. After, an analytical calculation of the potential and the electric field distributions has been presented briefly, to better estimate electrical and geometric configuration. Finally, simulation results of electrical signals based on gas mixtures (Neon-isobutane, Neon-DME) produced by MICROMEGAS were presented and analyzed in order to improve the MICROMEGAS performance (spatial (12 μm) and temporal (0.7 ns) resolutions).

Keywords

MICROMAEGAS, Gas Mixture, X-Ray Source, Avalanche Phenomenon, MATLAB Programing, Signal

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	Giomataris, Y., Rebourgeard, Ph., Robert, J.P. and Charpak, G. (1996) MICROMEGAS: A High-Granularity Position-Sensitive Gaseous Detector for High Particle-Flux Environments. Nuclear Instruments and Methods, A376, 29-35.
[2]	Sauli, F. (2002) Micro-Pattern Gas Detectors. Nuclear Instruments and Methods, A477, 1-7.
[3]	Charpak, G., et al. (1998) First Beam Test Results with Micromegas, a High Rate, High Resolution Detector. Nuclear Instruments and Methods, A412, 47-60.
[4]	Bachmann, S., Bressan, A., Ropclewski, L. and Sauli, F. (2000) High Resolution Micro-Pattern Gaseous Tracking Detectors. CERN, Nuclear Physics A663&664, 1069c-1072c.
[5]	Giomataris, Y. (1998) Development and Prospects of the New Gaseous Detector MICROMEGAS. Nuclear Instruments and Methods, A419, 239. http://dx.doi.org/10.1016/S0168-9002(98)00865-1
[6]	Sarvestani, A., et al. (1997) Thin-Gap Parallel Plate Chamber Variation. Nuclear Instruments and Methods, A410, 238.
[7]	Barrouch, G., et al. (1999) Development of a Fast Gaseous Detector: “Micromegas”. Nuclear Instruments and Methods, A423, 32-48.
[8]	Korff, S.A. (1955) Electrons and Nuclear Counters. Van Nostrand, Princeton.
[9]	Hamid, M., Seddik, B. and Abdelrhani, N. (2013) Micromegas Detector: Modeling Large Families Based on Gaseous Mixtures. LAP LAMBERT, Academic Publishing.
[10]	Mounir, H., Bri, S. and Haddad, M. (2012) Micromegas Signals Produced in Micromesh Based in Argon-Isobutane (Ar-Isobutane) and Argon-Dimethyl-Ether (Ar-DME) Gas Mixtures. European Journal of Scientific Research, 81, 465- 475.
[11]	Puil Geal, M. (2000) The Development of MICROMEGAS, a New Detector Gaseous Positron Micro-Grid. Ph.D. Thesis, University of Caen, Caen.
[12]	Mounir, H. and Bri, S. (2013) Micromegas Detector Using 55Fe X-ray Source. International Journal of Advanced Scientific and Technical Research, 1, 671-684.
[13]	Sharma, A. and Sauli, F. (1993) Experimental Determination of the Townsend Coefficient for Argon-CO2 Gas Mixtures at High Fields. Nuclear Instruments and Methods, A334, 420-424.
[14]	Nakhostin, M., Baba, M., Ohtsuki, T., Oishi, T. and Itoga, T. (2007) Precise Measurement of First Townsend Coefficient, Using Parallel Plate Avalanche Chamber. Nuclear Instruments and Methods in Physics Research, A572, 999- 1003.
[15]	Chefdeville, M. (2009) Development of Micromegas-Like Gaseous Detectors Using a Pixel Readout Chip as Collecting Anode. Thesis, University of Amsterdam, Amsterdam.