Vipin Shukla
Department of Electrical Engineering, Pandit Deendayal Petroleum University, Gandhinagar, India.

Mainak Bandyopadhyay
ITER-INDIA, Institute for Plasma Research, HBNI, Gandhinagar, Gujarat, India.

Vivek Pandya
Department of Electrical Engineering, Pandit Deendayal Petroleum University, Gandhinagar, India.

Arun Pandey
Negative Ion Based Neutral Beam Injection Group, Institute for Plasma Research, HBNI, Gandhinagar, Gujarat, India.

DOI https://doi.org/10.33889/IJMEMS.2020.5.6.095

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Abstract

Analytical expressions are used frequently for the determination and analysis of plasma parameters. Instead of relying on analytical expressions, the proposed method uses regression techniques supplemented with experimental data for the selected parameters (plasma potential). In the machine learning domain, this is equivalent to the creation of the training data set, building and training the model, and authenticating the result over a range of desired physical parameters. An experimental dataset is built using two axially movable Triple Langmuir Probe (TLPs) which measure the electron temperature, electron density, and electric potential of a plasma. The presented work is a first step towards developing an inclusive model with detailed kinetic simulations capable of characterizing the HELicon Experiment for Negative ion source (HELEN-I) with a single driver. Plasma potential is measured at different axial locations (z) by keeping pressure fixed at 6 mTorr.

Keywords- Plasma potential, Regression, Axial position, Ion source, HELEN-I.

Citation

Shukla, V., Bandyopadhyay, M., Pandya, V., & Pandey, A. (2020). Prediction of Axial Variation of Plasma Potential in Helicon Plasma Source Using Linear Regression Techniques. International Journal of Mathematical, Engineering and Management Sciences, 5(6), 1284-1299. https://doi.org/10.33889/IJMEMS.2020.5.6.095.