Helicon plasmas have gained significant attention due to their promising technological applications in areas such as space propulsion and high-density plasma generation. Helicon waves are low-frequency whistler waves that aid efficient plasma production at comparatively moderate magnetic fields, making them highly suitable for advanced plasma devices. IPR has developed RF-based Helicon Plasma Thruster systems in different phases to demonstrate their feasibility and propulsion performance. In the Low Power Thruster Section, extensive experimental investigations were carried out to evaluate the thrust performance of a helicon plasma thruster operated with RF power up to 5 kW under varying magnetic field strengths in the range of 800–2000 G using argon gas. A systematic parametric study was performed by varying RF input power, gas flow rate, and magnetic field intensity to identify the optimum operational regime for enhanced thrust generation. The developed thruster demonstrated thrust levels ranging from approximately 1 mN to 450 mN under different operating conditions. Comprehensive thrust measurement diagnostics based on strain-gauge thrust sensors covering the range of 1–1000 mN were developed, calibrated, and validated for accurate performance characterization. Key plasma parameters, including plasma density, electron temperature, magnetic field fluctuations, and ion flow characteristics, were measured using a suite of plasma diagnostic tools such as Langmuir probes, Mach probes, and Optical Emission Spectroscopy (OES). These experimental investigations provide valuable insights into plasma acceleration mechanisms and contribute toward the development, optimization, and scaling of efficient low-power plasma propulsion systems for future space applications. This is further enable to cater the studies on fusion plasma high density sources and related research pertaining to high Beta plasma, instabilities, divertor kind simulations and serve different active plasma diagnostics test bench facilities.