A5005011084- Particle accelerators and beam dynamics
- Plasma Diagnostics and Applications
- Magnetic confinement fusion research
- Superconducting Materials and Applications
- Dust and Plasma Wave Phenomena
- Particle Accelerators and Free-Electron Lasers
- Fusion materials and technologies
- Gyrotron and Vacuum Electronics Research
- Metal and Thin Film Mechanics
- Ionosphere and magnetosphere dynamics
- Electrostatic Discharge in Electronics
- Atomic and Molecular Physics
- Electrohydrodynamics and Fluid Dynamics
- Plasma Applications and Diagnostics
- High voltage insulation and dielectric phenomena
- Vacuum and Plasma Arcs
- Nuclear Physics and Applications
- Advanced Data Storage Technologies
- Laser-Plasma Interactions and Diagnostics
- Gas Sensing Nanomaterials and Sensors
- Electromagnetic Launch and Propulsion Technology
- Embedded Systems and FPGA Design
- Nuclear Materials and Properties
- Welding Techniques and Residual Stresses
- Earthquake Detection and Analysis
Institute for Plasma Research
2016-2025
Homi Bhabha National Institute
2017-2025
Sangath
2017-2024
Reliance Industries (India)
2022
Institute of Technology Management
2021
Centre of Plasma Physics - Institute for Plasma Research
2017-2020
Pandit Deendayal Petroleum University
2020
Integrated Test Range
2020
Max Planck Institute for Plasma Physics
2002-2011
University of Oulu
2011
The development of a large-area RF source for negative hydrogen ions, an official EFDA task agreement, is aiming at demonstrating ITER-relevant ion parameters. This implies current density 200 A m−2 accelerated D− ions filling pressure ⩽0.3 Pa and electron-to-ion ratio ⩽1 from extraction area similar to the positive-ion based sources JET ASDEX Upgrade pulse lengths up 1 h. work progressing along three lines in parallel: (i) optimization densities low electron/ion ratio, utilizing small areas...
The ITER project requires additional heating by two neutral beam injectors, each accelerating to 1 MV a 40 A of negative deuterium ions, deliver the plasma power about 17 MW for one hour. As these requirements have never been experimentally met, it was recognized as necessary setup test facility, PRIMA (Padova Research on Megavolt Accelerator), in Italy, including full-size ion source, SPIDER, and prototype whole injector, MITICA, aiming develop injectors be installed ITER. This realization...
In an experimental microwave ion source plasma system with a well-defined cavity geometry, multiple resonant mode excitations have been observed. The interactions among these modes can influence coupling to the plasma, enhance uniformity, and affect oscillations. superposition of closely spaced leads temporal modulation due beating effect between pairs modes. As result, new range oscillations is recorded at same frequency. This confirmed by experimentally measured frequency emission spectra...
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Following the allocation of procurement diagnostic neutral beam (DNB) to Indian DA, a series tasks have been undertaken first assess DNB configuration and arrive at an optimal beam-line folding in gas-feed vacuum-pumping requirements. Specific emphasis is placed on thermal, structural, electrical designs components, order ensure their compatibility with criteria specified for ITER vessel i.e.,...
Anode double layer and droplet shaped fireball are found in a magnetically constricted anode. The disc anode is using permanent magnets. device has only one vacuum chamber acts as cathode. Plasma created through glow discharge by applying high voltage between the Large size obtained near shown to have structure. Discharge operated pressure range from 5×10−3 mbar 5×10−2 keeping current 1 10 mA. Typical plasma density 1×1010 cm−3. profile of potential clearly shows two distinct regions with...
The plasma sources are a device that produces energetic ion streams for applications in diversified fields. However, operating the with repeatable performance remains challenging and time-consuming due to its nonlinear nature complex relation between input output parameters. This maiden study examines efficacy of nature-inspired evolutionary algorithms (NIEAs) optimizing parameters an source model based on artificial neural network (ANN) generates high-density negative hydrogen ions. Hence,...
Impedance matching circuit between radio frequency (RF) generator and the plasma load, placed them, determines RF power transfer from to load. The impedance of load depends on parameters through skin depth conductivity or resistivity. Therefore, for long pulse operation inductively coupled plasmas, particularly high (∼100 kW more) where condition may vary due different reasons (e.g., pressure, power, thermal), online tuning is necessary feedback. In fusion grade ion source operation, such...
The 100-kV negative-hydrogen-ion-source-based diagnostic neutral beam (NB) (DNB) injector, which forms a part of the Indian (IN) procurement package for ITER, targets delivery ~18-20 A hydrogen-atom current into ITER torus charge exchange resonance spectroscopy diagnostics. Considering stripping losses, ~70-A negative ion is required to be extracted from source, leads production 60 accelerated beam. Subsequent process neutralization, electrostatic separation, and transport duct large...
The Indian program of the RF based negative ion source has started off with commissioning ROBIN, inductively coupled facility under establishment at Institute for Plasma research (IPR), India. is being developed a technology transfer agreement IPP Garching. It consists single driver beam (BATMAN replica) to 100 kW, 1 MHz generator self excited oscillator, through matching network, plasma production and extraction acceleration. delivery without accelerator, enabled initiation experiments....
H- ion based neutral beam injector is a critical heating and current drive system in fusion reactor. However, the present source configuration has limitations terms of production, extraction, cesium (Cs) inventory management. To overcome these limitations, proof-of-principle experiment on novel concept regarding surface assisted volume ions production by sprinkling Cs coated tungsten (W) dust grains (low work function surface) into hydrogen plasma carried out. Four different diagnostics have...
The Helicon Plasma Source (HeliPS) designed and developed at the Centre of Physics-Institute for Research is a versatile helicon plasma device, which operates in wide range magnetic field configurations from 50 G to 500 G. This device dedicated perform broad research activities. main objective development HeliPS carry out studies on ion-ion plasmas electronegative gases. In near future, will be formed gases downstream production region. Although system primarily experiments, same can also...
Microwave coupling to plasma through cavity dependent resonant modes is one of the key aspects in a microwave discharge ion source (MDIS) for improving beam qualities as well dynamics. Knowing these concerns, MDIS designed, fabricated, and developed at Institute Plasma Research produce high current low emittance accelerator applications. The present manuscript reports development characterization results first produced by launching (MW) frequency 2.45 GHz. characterized particular distance...
Helicon wave heated plasmas are much more efficient in terms of ionization per unit power consumed. A permanent magnet based compact helicon plasma source is developed the Institute for Plasma Research, after carefully optimizing geometry, frequency RF power, and magnetic field conditions. The HELicon Experiment Negative ion-I single driver that being studied development a large sized, multi-driver negative hydrogen ion source. In this paper, details about machine results from...
Multidriver-based radio-frequency (RF) ion sources have emerged as the most promising option for producing plasma in large required fusion applications. In India, under domestic long-term program, a negative source development program has been initiated. A 100-kW inductively coupled single RF driver-based (ROBIN) installed and it is operational at Institute Plasma Research. The next step to move multidriver address several issues related configuration operation. two-driver-based twin...
Experimental results on effect of adding argon gas to hydrogen plasma in a multi-cusp dusty device are reported. Addition modifies density, electron temperature, degree dissociation, dust current as well charge. From the charging profile, it is observed that and charge decrease significantly up 40% addition flow rate plasma. But beyond rate, changes insignificant. Results show can be used tool control low pressure