Research outputs
2026
Characterization of the Extraction System of Supersonic Gas Curtain-Based Ionization Profile Monitor for FLASH Proton Therapy
Parambil, F. T. M., Patel, M., Kumar, N., Rawat, B. S., Butcher, W., Price, T., & Welsch, C. P. (2026). Characterization of the Extraction System of Supersonic Gas Curtain-Based Ionization Profile Monitor for FLASH Proton Therapy. Instruments, 10(1), 4. doi:10.3390/instruments10010004
2025
Faraday Cups: Principles, Designs, and Applications Across Scientific Disciplines—A Review
Rawat, B. S., Kumar, N., Ghosal, D., Aflyatunova, D., Rienäcker, B., & Welsch, C. P. (2025). Faraday Cups: Principles, Designs, and Applications Across Scientific Disciplines—A Review. Instruments, 9(3), 20. doi:10.3390/instruments9030020
3D Simulation studies of mixed plasma confinement at $ AE\bar{g}IS$
Rawat, B. S., Kumar, N., Rienacker, B., Welsch, C. P., Alfaro Campos, S., Auzins, M., . . . Zurlo, N. (2025). 3D Simulation studies of mixed plasma confinement at $ AE\bar{g}IS$. In Proceedings of International Conference on Exotic Atoms and Related Topics and Conference on Low Energy Antiprotons — PoS(EXA-LEAP2024) (pp. 076). Sissa Medialab. doi:10.22323/1.480.0076
CHARACTERIZATION OF THE RADIATION ENVIRONMENT IN THE FCC-ee TUNNEL
Frasca, A., Broggi, G., Bruce, R., Humann, B., Lechner, A., Lerner, G., . . . Kumar, N. (2025). CHARACTERIZATION OF THE RADIATION ENVIRONMENT IN THE FCC-ee TUNNEL. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 256-259). doi:10.18429/JACoW-IBIC2025-MOPMO32
DESIGN STUDIES OF A RETARDING POTENTIAL ENERGY ANALYSER (RPEA) FOR LOW ENERGY ANTIMATTER EXPERIMENTS
Rawat, B. S., Kumar, N., Chandran, S., Rienacker, B., & Welsch, C. P. (2025). DESIGN STUDIES OF A RETARDING POTENTIAL ENERGY ANALYSER (RPEA) FOR LOW ENERGY ANTIMATTER EXPERIMENTS. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 163-166). doi:10.18429/JACoW-IBIC2025-MOPMO02
EXPERIMENTAL INVESTIGATION INTO SUPERSONIC GAS JET INDUCED BEAM PERTURBATION
Butcher, W., Kumar, N., Patel, M., Stringer, O., Thesni, F., Zhang, H., . . . Welsch, C. P. (2025). EXPERIMENTAL INVESTIGATION INTO SUPERSONIC GAS JET INDUCED BEAM PERTURBATION. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 399-402). doi:10.18429/JACoW-IBIC2025-TUPCO18
GAS-JET BASED IONIZATION PROFILE MONITOR FOR PROTON FLASH THERAPY
Thesni, F., Kumar, N., Patel, M., Rawat, B. S., Butcher, W., & Welsch, C. P. (2025). GAS-JET BASED IONIZATION PROFILE MONITOR FOR PROTON FLASH THERAPY. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 460-462). doi:10.18429/JACoW-IBIC2025-TUPMO05
PASSIVE TRANSVERSE BEAM PROFILER FOR REAL-TIME MONITORING FOR FLASH RADIOTHERAPY
Patel, M., Kumar, N., Price, T., & Welsch, C. P. (2025). PASSIVE TRANSVERSE BEAM PROFILER FOR REAL-TIME MONITORING FOR FLASH RADIOTHERAPY. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 479-482). doi:10.18429/JACoW-IBIC2025-TUPMO10
PHYSICS-GUIDED DATA EXPANSION FOR PHOTOCATHODES USING TESS TRANSVERSE MOMENTUM MEASUREMENTS
Malhotra, S., Jones, L. B., Kumar, N., & Welsch, C. P. (2025). PHYSICS-GUIDED DATA EXPANSION FOR PHOTOCATHODES USING TESS TRANSVERSE MOMENTUM MEASUREMENTS. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 101-104). doi:10.18429/JACoW-IBIC2025-MOPCO15
SIMULATION AND FEASIBILITY ANALYSIS OF A NON-INVASIVE CAVITY BUNCH CHARGE MONITOR FOR LOW-ENERGY ANTIPROTON BEAMS
Chandran, S., Kumar, N., Rienacker, B., Rawat, B. S., & Welsch, C. P. (2025). SIMULATION AND FEASIBILITY ANALYSIS OF A NON-INVASIVE CAVITY BUNCH CHARGE MONITOR FOR LOW-ENERGY ANTIPROTON BEAMS. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 93-96). doi:10.18429/JACoW-IBIC2025-MOPCO13
Supersonic gas curtain based ionization beam profile monitor for FLASH proton beam therapy
Patel, M., Kumar, N., Thesni, F., Butcher, W., Price, T., McLauchlan, R., & Welsch, C. P. (2025). Supersonic gas curtain based ionization beam profile monitor for FLASH proton beam therapy. Frontiers in Oncology, 15. doi:10.3389/fonc.2025.1694310
Welcome
Welsch, C. P., & Kumar, N. (2025). Welcome. Proceedings of the International Beam Instrumentation Conference Ibic.
2024
FIRST PROOF-OF-CONCEPT TRANSVERSE BEAM PROFILE MEASUREMENTS WITH GAS JET IN-VIVO DOSE PROFILER FOR MEDICAL ACCELERATORS
Kumar, N., Patel, M., Butcher, W., Thesni, F., & Welsch, C. P. (2024). FIRST PROOF-OF-CONCEPT TRANSVERSE BEAM PROFILE MEASUREMENTS WITH GAS JET IN-VIVO DOSE PROFILER FOR MEDICAL ACCELERATORS. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 228-230). doi:10.18429/JACoW-IBIC2024-WEBC3
HALO MONITOR FOR HIGH-INTENSITY HADRON BEAMS BASED ON SUPERSONIC GAS CURTAIN
Zhang, H., Butcher, W., Kumar, N., Mada-Parambil, F., Patel, M., Sedlacek, O., . . . Welsch, C. (2024). HALO MONITOR FOR HIGH-INTENSITY HADRON BEAMS BASED ON SUPERSONIC GAS CURTAIN. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 310-313). doi:10.18429/JACoW-IBIC2024-WEP23
2023
Cherenkov Radiation in Optical Fibres as a Versatile Machine Protection System in Particle Accelerators
Wolfenden, J., Alexandrova, A. S. S., Jackson, F., Mathisen, S., Morris, G., Pacey, T. H. H., . . . Welsch, C. P. P. (2023). Cherenkov Radiation in Optical Fibres as a Versatile Machine Protection System in Particle Accelerators. SENSORS, 23(4). doi:10.3390/s23042248
Design and simulation of 2450 MHz microwave cavity for resonance and off-resonance plasma diagnosis in-situ plasma irradiation facility
Swaroop, R., Kumar, N., Sabavath, G., Choudhary, V. S., Jewariya, Y., & Rodrigues, G. (2023). Design and simulation of 2450 MHz microwave cavity for resonance and off-resonance plasma diagnosis in-situ plasma irradiation facility. JOURNAL OF INSTRUMENTATION, 18(2). doi:10.1088/1748-0221/18/02/P02010
2022
DEVELOPMENT OF QUANTUM GAS JET BEAM PROFILE MONITOR FOR sub-mm BEAMS
Kumar, N., Stringer, O., Wolfenden, J., Zhang, H. D., Welsch, C. P., & Maltusch, I. (2022). DEVELOPMENT OF QUANTUM GAS JET BEAM PROFILE MONITOR FOR sub-mm BEAMS. In Proceedings - Linear Accelerator Conference, LINAC (pp. 224-227). doi:10.18429/JACoW-LINAC2022-MOPORI03
Defect engineered blue photoluminescence in ZnO:Al/TiO<sub>2</sub> heterostructures
Saini, C. P., Bhowmick, S., Barman, A., Kumar, N., Das, A., Khan, S. A., . . . Kanjilal, A. (2022). Defect engineered blue photoluminescence in ZnO:Al/TiO<sub>2</sub> heterostructures. JOURNAL OF APPLIED PHYSICS, 132(6). doi:10.1063/5.0096116
A gas curtain beam profile monitor using beam induced fluorescence for high intensity charged particle beams
Salehilashkajani, A., Zhang, H. D., Ady, M., Chritin, N., Forck, P., Glutting, J., . . . Welsch, C. P. (2022). A gas curtain beam profile monitor using beam induced fluorescence for high intensity charged particle beams. APPLIED PHYSICS LETTERS, 120(17). doi:10.1063/5.0085491
A GAS JET BEAM HALO MONITOR FOR LINACS
Stringer, O., Zhang, H., Kumar, N., & Welsch, C. (2022). A GAS JET BEAM HALO MONITOR FOR LINACS. In Proceedings Linear Accelerator Conference Linac (pp. 228-231). doi:10.18429/JACoW-LINAC2022-MOPORI04
2021
Design and development of a compact ion implanter and plasma diagnosis facility based on a 2.45 GHz microwave ion source
Swaroop, R., Kumar, N., Rodrigues, G., Kanjilal, D., Banerjee, I., & Mahapatra, S. K. (2021). Design and development of a compact ion implanter and plasma diagnosis facility based on a 2.45 GHz microwave ion source. REVIEW OF SCIENTIFIC INSTRUMENTS, 92(5). doi:10.1063/5.0029629
2020
Non-invasive beam profile monitor for medical accelerators
Kumar, N., Salehilashkajani, A., Zhang, H. D., Ady, M., Forck, P., Glutting, J., . . . Welsch, C. P. (2020). Non-invasive beam profile monitor for medical accelerators. PHYSICA MEDICA-EUROPEAN JOURNAL OF MEDICAL PHYSICS, 73, 173-178. doi:10.1016/j.ejmp.2020.04.023
RECENT PROGRESS ON THE COMMISSIONING OF A GAS CURTAIN BEAM PROFILE MONITOR USING BEAM INDUCED FLUORESCENCE FOR HIGH LUMINOSITY LHC
Ady, M., Jones, O. R., Mazzoni, S., Papazoglou, I., Pasquino, C., Rossi, A., . . . Zhang, H. D. (2020). RECENT PROGRESS ON THE COMMISSIONING OF A GAS CURTAIN BEAM PROFILE MONITOR USING BEAM INDUCED FLUORESCENCE FOR HIGH LUMINOSITY LHC. In Proceedings of the International Beam Instrumentation Conference Ibic (pp. 188-192). doi:10.18429/JACoW-IBIC2020-WEPP36
2019
Theoretical and simulation study of 'Comb' electron beam and THz generation
Joshi, V., Lehnert, U., Karmakar, J., Kumar, N., Karmakar, B., Tripathi, S., . . . Kanjilal, D. (2019). Theoretical and simulation study of 'Comb' electron beam and THz generation. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 913, 28-39. doi:10.1016/j.nima.2018.10.072
2018
Probing the impact of energetic argon ions on the structural properties of ZnO:Al/TiO<sub>2</sub> heterostructures
Saini, C. P., Barman, A., Kumar, N., Cours, R., Joulie, S., Serin, V., . . . Kanjilal, A. (2018). Probing the impact of energetic argon ions on the structural properties of ZnO:Al/TiO<sub>2</sub> heterostructures. JOURNAL OF APPLIED PHYSICS, 124(15). doi:10.1063/1.5045762
Theoretical and Simulation Study of 'Comb' Electron beam and THz generation
2017
Status of the development of Delhi Light Source (DLS) at IUAC
Ghosh, S., Joshi, V., Urakawa, J., Terunuma, N., Aryshev, A., Fukuda, S., . . . Kanjilal, D. (2017). Status of the development of Delhi Light Source (DLS) at IUAC. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 402, 358-363. doi:10.1016/j.nimb.2017.03.108
Design calculation on beam dynamics and THz radiation of Delhi light source
Joshi, V., Karmakar, J., Kumar, N., Karmakar, B., Tripathi, S., Ghosh, S., . . . Aryshev, A. (2017). Design calculation on beam dynamics and THz radiation of Delhi light source. In Proceedings of the 38th International Free Electron Laser Conference Fel 2017 (pp. 153-155). doi:10.18429/JACoW-FEL2017-MOP047
Progress of Delhi light source at IUAC, New Delhi
Ghosh, S., Sahu, B. K., Patra, P., Karmakar, J., Karmakar, B., Abhilash, S. R., . . . Rao, T. (2017). Progress of Delhi light source at IUAC, New Delhi. In Proceedings of the 38th International Free Electron Laser Conference Fel 2017 (pp. 149-152). doi:10.18429/JACoW-FEL2017-MOP046
2016
Development and test of 2.45 GHz microwave ion source based intense ion beam experimental facility
Kumar, N., Rodrigues, G., Mathur, Y., Ojha, S., Ahuja, R., & Kanjilal, D. (2016). Development and test of 2.45 GHz microwave ion source based intense ion beam experimental facility. VACUUM, 124, 55-59. doi:10.1016/j.vacuum.2015.11.014
Status of design and development of Delhi Light Source at Iuac, Delhi
Ghosh, S., Sahu, B. K., Patra, P., Reghu, A. S., Karmakar, J., Karmakar, B., . . . Rao, T. (2016). Status of design and development of Delhi Light Source at Iuac, Delhi. In Ipac 2016 Proceedings of the 7th International Particle Accelerator Conference (pp. 748-750).
2014
A compact 2.45 GHz microwave ion source based high fluence irradiation facility at IUAC, Delhi
Kumar, N., Rodrigues, G., Mathur, Y., Lakshmy, P. S., Ahuja, R., Dutt, R. N., & Kanjilal, D. (2014). A compact 2.45 GHz microwave ion source based high fluence irradiation facility at IUAC, Delhi. In Ipac 2014 Proceedings of the 5th International Particle Accelerator Conference (pp. 592-594).
Design of a compact light source Accelerator facility at IUAC, Delhi
Ghosh, S., Sahu, B. K., Rai, A., Chaudhari, G. K., Patra, P., Karmakar, J., . . . Dixit, T. (2014). Design of a compact light source Accelerator facility at IUAC, Delhi. In Proceedings of the 36th International Free Electron Laser Conference Fel 2014 (pp. 596-599).
Effect of frequency tuning on bremsstrahlung spectra, beam intensity, and shape in the 10 GHz NANOGAN electron cyclotron resonance ion source
Rodrigues, G., Mal, K., Kumar, N., Baskaran, R., Lakshmy, P. S., Mathur, Y., . . . Roy, A. (2014). Effect of frequency tuning on bremsstrahlung spectra, beam intensity, and shape in the 10 GHz NANOGAN electron cyclotron resonance ion source. REVIEW OF SCIENTIFIC INSTRUMENTS, 85(2). doi:10.1063/1.4850715
Studies on the effect of the axial magnetic field on the x-ray bremsstrahlung in a 2.45 GHz permanent magnet microwave ion source
Kumar, N., Rodrigues, G., Lakshmy, P. S., Baskaran, R., Mathur, Y., Ahuja, R., & Kanjilal, D. (2014). Studies on the effect of the axial magnetic field on the x-ray bremsstrahlung in a 2.45 GHz permanent magnet microwave ion source. REVIEW OF SCIENTIFIC INSTRUMENTS, 85(2). doi:10.1063/1.4852216