A Study of Micromegas With Preamplification With a Single Gem

Kane, S.; May, J.; Miyamoto, J.; Shipsey, I. P. J.; Andriamonje, S.; Delbart, A.; Derré, J.; Giomataris, I.; Jeanneau, F.

doi:10.1142/9789812776464_0098

Cited by 8 publications

(7 citation statements)

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“…Besides the operation in detectors at high energy projects like HERA-B [2], COMPASS [3] [4] the GEM is also used in gaseous photomultiplier development [5,6] or Xray imaging detectors [7,8]. Thereby, the GEM is usually combined with other micro pattern devices like MSGCs [9,10], MGCs [11], micromegas [12] or MicroCAT [13]. Also the cascade of multiple GEMs has been tested extensively [14].…”

Section: Introductionmentioning

confidence: 99%

Gas gain and signal length measurements with a triple-GEM at different pressures of Ar-, Kr- and Xe-based gas mixtures1

Orthen

Wagner

Besch

et al. 2003

Nuclear Instruments and Methods in Physics Research Section A:

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Section: Introductionmentioning

confidence: 99%

Gas gain and signal length measurements with a triple-GEM at different pressures of Ar-, Kr- and Xe-based gas mixtures1

Orthen

Wagner

Besch

et al. 2003

Nuclear Instruments and Methods in Physics Research Section A:

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“…It has also been checked that the use of a GEM foil in combination with a Micromegas detector significantly reduces the spark rate [8]. A quantitative understanding of the underlying mechanism is still missing.…”

Section: Open Questionsmentioning

confidence: 99%

“…• The presence of a GEM [7] foil: it is well known that GEM detectors are less sensitive to the development of sparks. It has also been checked that the use of a GEM foil in combination with a Micromegas detector significantly reduces the spark rate [8]. A quantitative understanding of the underlying mechanism is still missing.…”

Section: Open Questionsmentioning

confidence: 99%

Origin and simulation of sparks in MPGD

Procureur

Aune²,

Ball³

et al. 2012

J. Inst.

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The development of Micro-Pattern Gaseous Detectors for high luminosity experiments requires a better understanding of the origin of the sparks in these detectors. Assuming a spark occurs whenever the electron number reaches the well known Raether limit, previous Geant4 simulations quantitatively reproduced the spark rate observed in Micromegas with high energy hadron beams. Large release of energies are provided by fragments from nuclear interactions between the beam and the detector material. In order to further check the validity of our simulation, hadron beam tests have been performed at the CERN/SPS and PS on Micromegas and hybrid Micromegas-GEM detectors. In particular, large variations of the spark rate have been observed in positively charged hadron beams below 1 GeV/c, which are well described by the simulation. The role of the charge density has also been investigated with measurements in magnetic fields and with a Micromegas-GEM. The simulation has therefore been upgraded to take into account the transverse diffusion and is now able to quantitatively explain the role of a GEM foil in the spark rate reduction.

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“…To decrease the spark probability, the GEM-Micromegas detector was proposed and tested in several applications of high energy physics [6,7]. This detector uses a GEM foil as a preamplifier element in the structure to reduce the amplification stress on Micromegas.…”

Section: Introductionmentioning

confidence: 99%

Investigation of GEM-Micromegas detector on X-ray beam of synchrotron radiation

张余炼

祁辉荣

et al. 2014

Chinese Phys. C

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To reduce the discharge of the standard bulk Micromegas and GEM detector, the GEM-Micromegas detector was developed at the Institute of High Energy Physics. Taking into account the advantages of the two detectors, one GEM foil was set as a preamplifier on the mesh of Micromegas in the structure and the GEM preamplification decreased the working voltage of Micromegas to reduce the effect of the discharge significantly. At the same gain, the spark probability of the GEM-Micromegas detector can be reduced to a factor 0.01 compared to the standard Micromegas detector, and even the higher gain could be obtained. In the paper, the performance of the detector in X-ray beam was studied at 1W2B Laboratory of Beijing Synchrotron Radiation Facility. Finally, the result of the energy resolution under various X-ray energies was given in different working gases. It indicates that the GEM-Micromegas detector has the energy response capability in the energy range from 6 keV to 20 keV and it could work better than the standard bulk-Micromegas.

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A Study of Micromegas With Preamplification With a Single Gem

Cited by 8 publications

References 0 publications

Gas gain and signal length measurements with a triple-GEM at different pressures of Ar-, Kr- and Xe-based gas mixtures1

Gas gain and signal length measurements with a triple-GEM at different pressures of Ar-, Kr- and Xe-based gas mixtures1

Origin and simulation of sparks in MPGD

Investigation of GEM-Micromegas detector on X-ray beam of synchrotron radiation

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