A5080180997- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Plasma Diagnostics and Applications
- Energy Harvesting in Wireless Networks
- Electromagnetic Simulation and Numerical Methods
- HVDC Systems and Fault Protection
- Thermal Analysis in Power Transmission
- Pulsed Power Technology Applications
- Electromagnetic Launch and Propulsion Technology
- Electrostatic Discharge in Electronics
- Smart Grid Security and Resilience
- Flexible and Reconfigurable Manufacturing Systems
- Electromagnetic Compatibility and Measurements
- Assembly Line Balancing Optimization
Institute for Plasma Research
2015-2023
Shell (India)
2016
The ITER Ion Cyclotron Heating and Current Drive system (IC H&CD) is designed to deliver 20MW a broad range of plasma scenarios between 40 55MHz, during very long pulses. It consists two broadband equatorial port plug antennas, their pre-matching matching systems, transmission lines, Radio Frequency (RF) Sources High Voltage Power Supplies. overall project schedule has been revised agreed by Council; it re-integrates the second antenna its power supplies in construction baseline sets dates...
India is responsible for delivery of 8+1(prototype) RF sources to ITER Organization. Each source will provide 2.5MW power at 2 VSWR in the frequency range 35 65MHz. Eight such generate total 20MW power. A large number high transmission line components are required connecting various stages source. To test these passive power, prior with system, a facility required. developing 3MW based on concept Traveling Wave Resonator (TWR) testing components. TWR basically ring resonator which build...
As part of development program for a high power co-axial transmission line component test facility, an existing traveling wave resonator based stand is modified to improve gain and ring return loss. The 10 dB directional coupler in the earlier replaced with 14 couple radio frequency ring. To achieve improved isolation loss, design equipped two broadside strip-lines tunable gap between them. Detailed optimization without setup performed using simulator Computer Simulation Technology Microwave...
A test bed for testing of MW level transmission line components, based on the concept standing wave resonator is being developed at ITER-India, Ion Cyclotron Heating and Current Drive (ICH&CD) lab. This can be configured operated various lengths optimum requirement. Estimated 32 kV peak voltage 650 current achieved inside during operation with an input power ∼ 20 kW. In this paper, detailed design simulation results using high frequency simulator Microwave Studio (MWS) presented. brief...
Development of wideband solid state power amplifier in ITER [1] ICH&CD frequency range is ongoing. A 12 kW/CW Solid State Power Amplifire (SSPA) being developed house. 1 × 16 splitter/combiner will be used at input/output side. Study has been carried out on two options i.e. coaxial type & lumped element based Wilkinson splitter/combiner. Tentative level both input N-Type ports combiner ∼ kW. Design and simulation for done. Quarter wave length centre 1500 mm. To reduce mechanical dimension...
India is responsible for delivery of 8+1(prototype) RF sources to ITER Organization. Each source will provide 2.5MW power at 2 VSWR in the frequency range 35 65MHz with other stringent specifications. To test full performance, developing unique 3MW facility variable load condition (up 3.0 any phase angle between 0°-360°), consisting high 50 Ohm dummy load, shifter and stub. The combined assembly stub called MisMatch Transmission Line (MMTL) system. Detailed thermal simulation MMTL system has...
ITER-India is responsible to deliver nine (8+1 spare) ICH & CD Power Sources ITER. Each power source capable 2.5 MW at 35 65 MHz frequency range with a load condition up VSWR 2:1. For remote operation of different subsystems, Local Control Unit (LCU) developed. LCU developed using PXI hardware and Schneider PLC Lab VIEW-RT developmental environment. All the protection function amplifier running on 7841 R module that ensures hard wired logic. There are three level function- first by supply...
The high-power radio frequency source for ion cyclotron heating and current drive of ITER tokamak consists two identical 1.5 MW amplifier chains. These chains will be combined using a wideband hybrid combiner with adequate coupling flatness, phase balance, return loss, isolation response to generate 2.5 (RF) power in the range 36 60 MHz. As part in-house development program at ITER-India, flatness loss/isolation better than 0.4 −25 dB, respectively, has been simulated. A detailed analysis...
Vacuum windows are an essential part of any radio frequency (RF) system which launches/couples RF power from atmospheric to a vacuum environment. This paper describes the design double barrier ceramic coaxial window. Alumina 99.5% pure is considered as material while inner and outer conductors oxygen-free copper. As initial approach thickness, slope, depth in conductor varied performance window studied. The optimised achieve best insertion loss, return loss response for operating range up 65MHz.