Studies on charging-up of single Gas Electron Multiplier

Kumar, Vishal; Tripathy, Sridhar; Bhattacharya, Purba; Mukhopadhyay, Supratik; Majumdar, N.; Sarkar, S.

doi:10.1088/1748-0221/16/01/p01038

Cited by 8 publications

(12 citation statements)

References 18 publications

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“…Further R&D in this direction is in progress and some preliminary test results will be reported here. Several other R&D projects are also underway to explore the possibility of using Gaseous Electron Multiplier (GEM)-based detectors as the muon tracker [6]. In the following, a comprehensive report about the numerical work along with the instrumentation carried out by us for the R&D of the proposed MST setup will be furnished.…”

Section: Herementioning

confidence: 99%

“…Several research activities carried out to study and optimize their design parameters for efficient operation in connection to other experiments [12] have been utilized in the R&D. An effort has been put to explore environment-friendly gas mixture to operate the RPCs which should be relevant for the R&D of the MST setup too [13]. There have been several experimental and numerical activities performed to understand the functioning of GEM-based detectors [6] which are relevant for this R&D activity.…”

Section: Experimental Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Muon tomography using cosmic-ray muons

Majumdar

Tripathy

Das

et al. 2022

J. Phys.: Conf. Ser.

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The paper discusses about the R&D of a setup for muon tomography utilizing the scattering suffered by the muons due to electromagnetic interaction with the atomic nuclei while passing through any matter. The design of the setup has been optimized using numerical simulation for material discrimination and for further application in inspection of civil structures. An image processing algorithm based on pattern recognition method has been developed and tested for its performance in distinguishing between light and heavy elements and detecting defects in civil structures. The hardware developmental activities related to the muon tracking detectors and data acquisition system have been discussed.

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Section: Herementioning

confidence: 99%

Section: Experimental Measurementsmentioning

confidence: 99%

Muon tomography using cosmic-ray muons

Majumdar

Tripathy

Das

et al. 2022

J. Phys.: Conf. Ser.

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“…The gain calibration has been done using the current measurement from the picoammeter and energy spectra from Multi-Channel Analyzer (MCA). More details about the experimental setup, radiation rate and gain measurement are mentioned in [3].…”

Section: Setupmentioning

confidence: 99%

An experimental study to understand the physics behind charging-up of Gas Electron Multiplier (GEM)

Kumar

Tripathy²,

Mukhopadhyay³

et al. 2022

J. Phys.: Conf. Ser.

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Charging-up is a phenomenon observed while working with gaseous ionization detector having dielectric. It is comprised of two processes: the polarization of dielectric due to exposure to high electric field and collection of charges on dielectric surface. Both these charging-up processes affect the gain of the detector as they change the local field configuration around the dielectric. Here, we have studied these effects using experimental techniques for a single GEM detector. It has been observed that due to polarization the gain has increased following a curve similar to charging-up of a capacitor. However, the radiation charging-up has reduced gain depending on radiation rate. Here, the radiation rate has been modified by using a) collimators, b) strong and weak sources. As the rate has been increased, the rate of collection of charges on GEM dielectric has accelerated. Its effects are important for experiments where beam current changes significantly with time and in TPC application which requires gain to be stable over time.

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“…As a result, the charging-up plays an important role in GEM detector functioning. A detailed analysis of charging-up and its effects on gain for a single GEM have been decribed in [9], with detailed investigation of charging-up with various field and rate configurations. The work also includes gain measurment technique and methodology for varying radiation rates with help of collimator while using extended radiation source.…”

Section: Introductionmentioning

confidence: 99%

“…The studies carried out on a single GEM in [9] was necessary to understand the basic features of the complex process that has been achieved with a reasonable amount of success. However, in real experiments, single GEM configurations are rarely used, if at all.…”

Section: Introductionmentioning

confidence: 99%

Comparative study on charging-up of single, double and triple Gas Electron Multipliers (GEM)

Kumar,

Mukhopadhyay,

Majumdar

et al. 2021

Preprint

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In this paper, a detailed investigation has been carried out to understand the physics behind GEM charging-up and its effects on gain. Experiments have been performed on both double and triple GEM with the help of 55 Fe x-ray source and a comparative study of these configurations along with the single GEM results observed in our previous work, has been reported. The increase in gain due to polarization of GEM foil dielectric and reduction in gain due to charge accumulation on dielectric are studied in detail with variation in parameters, like field configuration and radiation rate.

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Studies on charging-up of single Gas Electron Multiplier

Cited by 8 publications

References 18 publications

Muon tomography using cosmic-ray muons

Muon tomography using cosmic-ray muons

An experimental study to understand the physics behind charging-up of Gas Electron Multiplier (GEM)

Comparative study on charging-up of single, double and triple Gas Electron Multipliers (GEM)

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