A5073398822- Particle Detector Development and Performance
- Neutrino Physics Research
- Ultrasonics and Acoustic Wave Propagation
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Astrophysics and Cosmic Phenomena
- Non-Destructive Testing Techniques
- Flow Measurement and Analysis
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Nuclear Physics and Applications
- Ultrasound Imaging and Elastography
- Advancements in PLL and VCO Technologies
- Particle accelerators and beam dynamics
- Semiconductor Lasers and Optical Devices
- Analog and Mixed-Signal Circuit Design
- Muon and positron interactions and applications
- Structural Health Monitoring Techniques
- Cold Atom Physics and Bose-Einstein Condensates
- Optical Network Technologies
- Advanced NMR Techniques and Applications
- Photoacoustic and Ultrasonic Imaging
- Electrical Fault Detection and Protection
- Machine Fault Diagnosis Techniques
Brookhaven National Laboratory
2021-2024
Brookhaven College
2024
Bhabha Atomic Research Centre
2018-2020
Homi Bhabha National Institute
2017-2020
A real time empirical mode decomposition (EMD) algorithm based ultrasonic imaging system has been developed for non-destructive testing (NDT) applications. It is difficult to implement the EMD signal processing in because it totally a data-driven process which comprises numerous sifting operations. In this paper, implemented visual software environment. The implementation encompasses two types of interpolation methods: piecewise linear (PLI) and cubic spline (CSI). tridiagonal matrix solved...
The study proposes a novel hardware‐based architecture of the reconfigurable embedded system for multi‐channel immersion ultrasonic system. It provides addressing‐based analogue multiplexing scheme, which requires only one data acquisition unit and common on‐chip storage imaging also unique channel facility to user modify number channels (up 256 pulse‐echo 512 transmit–receive mode by installing partial front‐end hardware (pulser, pre‐amplifier) without modifying remaining (common‐amplifier,...
This paper provides design and development details of the generation bipolar High Voltage (HV) square wave pulses for excitation low frequency ultrasonic transducers. Such a circuit is required purpose inspection components, particularly where high energy to insonify attenuative medium, such as concrete. A HV (±350 V) pulse has been generated by an ultrafast complementary Metal Oxide Semiconductor Field-Effect Transistor (MOSFET) pair, which driven speed MOSFET drivers. The utilized energize...
The second and final version of ColdADC, called ColdADC_P2, is presented. ColdADC_P2 a 16-channel, 12-bit, 2 MS/s digitizer application-specific integrated circuit (ASIC) intended for use inside the DUNE Far Detector. contains two 16 pipelined analog-to-digital converters (ADCs) that each digitizes output eight sample-and-hold amplifiers (SHAs). Because application requires immersion in liquid argon (LAr), was developed using specialized design techniques long-term reliability...
High voltage ultrasonic spike pulser has been design and developed especially for immersion Non-Destructive Testing (NDT) application requiring high material penetration due to multiple interfaces long path. The spice simulation of carried out. is externally controlled by the host PC through USB interface. experiment results are compared with no load 50 Ω conditions. experimental study indicates that output amplitude can reach up -300 V 10 MHz water-immersed unfocused transducer. Pulser...
The novel matrix-based real-time ultrasonic imaging using an camera for immersion application has been proposed in this paper. provides images of mechanical components and the image size is equal to field view developed transducer assembly. For imaging, addressing-based analog multiplexing scheme such a way that all channels specific row are selected simultaneously as excitation, data acquisition, processing transferring operations performed concurrently. Similarly, same remaining rows...
The paper presents the details of development fiber optic link that will be used to interconnect various analog signals. Speciality is signal frequency up 1 kHz transmitted through digital technology. In order resolve problem DC balance and clock/data recovery during data transmission, gives a simple practical solution 8B/10B encoding decoding techniques. also clock (CDR) by using 4×-oversampling based design encoder has been implemented on transmitter decoder in receiver module. This method...
The novel circular-array based real-time ultrasonic imaging technique using an camera has been proposed in this paper for of a fuel sub-assembly (FSA) fast breeder reactor. developed camera-based system provides images the top-head region FSA high-temperature environment. For imaging, entire divided into various arcs, and address-based analog multiplexing scheme such way that all channels specific arc are selected concurrently (transducer excitation, data acquisition, processing...
We present the optimization of Charge Sensitive Amplifier (CA) in LArASIC, a 16-channel front-end 180 nm CMOS, developed for Deep Underground Neutrino Experiment (DUNE) far detector single-phase liquid argon (LAr) time projection chamber (TPC). The charge amplification is done two stages; first (CA1) and second (CA2) stage requires small pre-biasing current (100 pA – 5 nA) or Reset Quiescent Current (RQI) sourced sunk, respectively from its input, to keep Adaptive Continuous (ACR) circuit...