Soft real-time data processing solutions in measurement systems on example of small-scale GEM based x-ray spectrometer

Linczuk, Paweł; Poźniak, Krzysztof T.; Chernyshova, M.

doi:10.1117/12.2659686

Cited by 1 publication

(2 citation statements)

References 41 publications

(33 reference statements)

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“…The main characterization indicators for GEM are collection efficiency and gain. Previous studies [1][2][3][4][5][6][7][8][9][10][11][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] have done a lot of work on how to increase the gain of the detector, and conducted a relatively comprehensive discussion from the aspects of simulation methods, structural design, and loading methods. Therefore, this research focuses on improving the optical transparency and electrical transparency of a single GEM, and conducts exploratory work on the collection efficiency, structural design, and process research.…”

Section: Structure Design and Simulationmentioning

confidence: 99%

“…Since the invention of the first GEM [1] by Fabio Sauli at CERN in 1997, the structure consisting of two layers of metal, a supporting dielectric (used to be a Kapton foil), and through-holes has been widely used in X-ray [2][3][4][5], charge particle detection [6][7][8], and imaging [9]. By loading a voltage difference between the upper and lower surfaces, the GEM is able to generate strong electric fields.…”

Section: Introductionmentioning

confidence: 99%

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Development of a Novel Fabrication Process for Application in Glass Gas Electron Multiplier Detectors

Sun

Cao

et al. 2023

Processes

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Gas electron multipliers (GEMs) have been widely used for particle collection and signal amplification. Because of the advantages of glass, such as high hardness, aging resistance, and dielectric strength, research into its application as a substrate material in GEM design and process has attracted extensive attention in recent years. This paper compares two commonly used glass GEM structural designs and shows that the optical transparency of the hexagonal symmetric structure is superior to that of the rectangle structure. An electric field model is developed to characterize the negative correlation between the hole diameter and the electric field strength. The structure of glass GEM is designed according to the feasibility of the process. A new process method of surface metal patterning using hole filling to form a mask is proposed, which can meet the high alignment and shaping requirements of the perfect match between the opening of metal layer and the aperture shape of the substrate. Combined with the advanced laser hole modification process, a glass GEM sample with a hole diameter of 70 μm, a spacing of 140 μm, a substrate thickness of 240 μm, and a metal thickness of 13 μm is obtained. Finally, particle trajectories, avalanche region coverage, and electron energy are discussed based on the prototype structure.

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