Dr. Davinder Siwal

Dr. Davinder Siwal is working as an Assistant Professor at the Department of Physics, Tulmulla campus, Central University of Kashmir, Jammu & Kashmir, India, contributing in the area of radiation detector instrumentation physics for medical imaging and the applied domain of nuclear physics. He qualified CSIR-NET with JRF in 2006, and has been awarded for Aswini Kumar Rath Memorial Award-2020 gold medal from Indian Physics Association for his outstanding contribution in nuclear physics research. His research background knowledge includes; HPGe detector, scintillation based neutron and photon crystals, and microchannel plate detector (MCP) experience. This involves handling of multi-parameter detector data with GSI-Multi Branching System (MBS), CAEN and Struck based signal digitizers usage at various institutions. Contributed in the digital pulse processing development for the  future data acquisition at National Array of Neutron Detectors (NAND), Inter University Accelerator Centre, New Delhi. He is expert in Linux based computation and data analysis software for detector modeling that includes; ROOT based data analysis, Geant4 based monte carlo simulation for detector development, Geant4/GATE based imaging detector, and TOPAS-MC for the medical LINAC photon beam.  Dr Siwal believes there is significant scope to translate instrumentation research into the medical domain from an Indian perspective. In this connection, he is presently working in the frontline area of research involving gamma-ray camera development.

Selected Research Publications:

1. Davinder Siwal, et al., Evaluating plastic scintillator performance as a substitute of LYSO in SiPM based animal PET scanners: a GEANT4 simulation analysis, JINST 20 (2025) P11001.
2. Davinder Siwal, Castor image reconstruction results for a NEMA NU-4 PET phantom: GATE simulations, 7th International Medical Olympiad Conference, Chandigarh  Op-12 (2024)  47-48.
3. Davinder Siwal, G. Anil Kumar, Optical photon transport simulations for SiPM based PET scanner,  J. Phys.: Conf. Ser. 2663 (2023) 012042.
4. Davinder Siwal, G. Anil Kumar, Attempts to understand the image reconstruction algorithms used in medical X-ray computed tomography, DAE-BRNS Symp. on Nucl. Phys. 66 (2022) 1170
5. Davinder Siwal, Detector instrumentation development for nuclear physics, Physics News, 51 (2021) 10.
6. Davinder Siwal, Neha Chug, Kundan Singh,  Exploring the sampling rate effect on digital time of flight response for fast scintillator detectors, Appl. Radiat. Isot. 151 (2019) 67.
7. Kundan Singh, Davinder Siwal, Investigation of digital timing resolution and further improvement by using constant fraction signal time marker slope for fast scintillator detectors, Nucl. Instr. and Meth. A 886 (2018) 61.
8. Neha Chug, Davinder Siwal, and Kundan Singh, How does the sampling rate affect the digital timing response of fast scintilltors ?, DAE-BRNS symp. on Nucl. Phys. 63 1096 (2018).
9. Davinder Siwal et al., Exploring the light response of a 5′′ × 5′′ BC501A detector using 252Cf source, DAE-BRNS symp. on Nucl. Phys. 63 (2018) 1102.
10. Sachin Dev, B.S. Rana, Davinder Siwal, Sanjeev Kumar, Dose estimation in water equivalent phantom using Geant4 simulation toolkit, Journal of Medical Physics 42 (2017) 110 (Poster No. 189)
11. Neha Chug, Davinder Siwal, and Kundan Singh, Exploring digital timing response for fast scintillators at Giga-Sampling digitization rate, DAE-BRNS symp. on Nucl. Phys. 62 (2017) 1054.
12. Davinder Siwal, and Kundan Singh, Time-of-Flight resolution of fast scintillators and further improvement by constant fraction signal slope : A digital approach, DAE-BRNS symp. on Nucl. Phys. 62 (2017) 1050.
13. Davinder Siwal, B.B. Wiggins, R.T. deSouza, Using pulse shape analysis to improve the position resolution of a resistive anode microchannel plate detector, Nucl. Instr. and Meth. A 804 (2015) 144.
14. B.B. Wiggins, E. Richardson, D. Siwal, S. Hudan, R. T. deSuza, Optimizing the position resolution of a Z-stack microchannel plate resistive anode detector for low intensity signals,  Rev. of Sci. Instrum. 86 (2015) 083303.
15. R. T. deSouza, B.B. Wiggins, Davinder Siwal,  Sensing an electron cloud emanating from a microchannel plate stack, Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), IEEE Xplore (2015).

Master's Thesis  on preamplifier PCB development 

Rewhan.  Design and Implementation of a 80MHz Bandwidth Preamplier for a SiPM Sensor. Master of Science in Physics Central University of Kashmir, 2026.