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120 results on '"Saxena, Y.C."'

1. Micro-particle injection experiments in ADITYA-U tokamak using an inductively driven pellet injector

Author

Pahari, Sambaran, primary, P.P., Rahulnath, additional, Savita, Aditya Nandan, additional, Maurya, Pradeep Kumar, additional, Jha, Saroj Kumar, additional, Shiv, Neeraj, additional, K., Raghavendra, additional, Hemani, Harsh, additional, Nagaraju, Belli, additional, Mahar, Sukantam, additional, Rao, Manmadha, additional, Suryaprasad, I.V.V., additional, Malshe, U.D., additional, Ghosh, J., additional, Doshi, B.R., additional, Chattopadhyay, Prabal Kumar, additional, Tanna, R.L., additional, Jadeja, K.A., additional, Patel, K.M., additional, Kumar, Rohit, additional, Macwan, Tanmay, additional, Raj, Harshita, additional, Aich, S., additional, Singh, Kaushlender, additional, Dolui, Suman, additional, Kumawat, D., additional, Makwana, M.N., additional, Shah, K.S., additional, Gupta, Shivam, additional, Balakrishnan, V., additional, Gupta, C.N., additional, Patnaik, Swadesh Kumar, additional, Edappala, Praveenlal, additional, Shah, Minsha, additional, Kadia, Bhavesh, additional, Yadava, Nandini, additional, Shah, Kajal, additional, Shukla, G., additional, Chowdhuri, M.B., additional, Manchanda, R., additional, Ramaiya, Nilam, additional, Kumar, Manoj, additional, Nagora, Umesh, additional, S., Varsha, additional, Pathak, S.K., additional, Asudani, Kumudni, additional, Chaudhuri, Paritosh, additional, Maya, P.N., additional, Goswami, Rajiv, additional, Sen, A., additional, Saxena, Y.C., additional, Pal, R., additional, and Chaturvedi, S., additional

Published
2024
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2. Real-time feedback control system for ADITYA-U horizontal plasma position stabilisation

Author

Kumar, Rohit, Gautam, Pramila, Gupta, Shivam, Tanna, R.L., Edappala, Praveenlal, Shah, Minsha, Raulji, Vismay, Jadeja, K.A., Patel, K.M., Macwan, Tanmay, Manchanda, Ranjana, Chowdhuri, M.B., Yadava, Nandini, Shah, Kunal, Makwana, M.N., Balakrishnan, V., Gupta, C.N., Aich, Suman, Kumawat, Devilal, Raj, Harshita, Sathyanarayana, K., Ghosh, Joydeep, Rajpal, Rachna, Chattopadhyay, P.K., and Saxena, Y.C.

Published
2021
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3. Runaway electron mitigation with pulsed localized vertical magnetic field perturbation in ADITYA tokamak

Author

Tanna, R.L., primary, Patel, S., additional, Ghosh, J., additional, Chauhan, Chetna, additional, Amardas, A., additional, Chattopadhyay, P.K., additional, Jadeja, K.A., additional, Joisa, Y.S., additional, Nagora, U.C., additional, Atrey, P.K., additional, Chowdhuri, M.B., additional, Manchanda, R., additional, and Saxena, Y.C., additional

Published
2023
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6. Overview of recent experimental results from the ADITYA-U tokamak

Author

Tanna, R.L., primary, Macwan, Tanmay, additional, Ghosh, J., additional, Jadeja, K.A., additional, Kumar, Rohit, additional, Aich, S., additional, Patel, K.M., additional, Raj, Harshita, additional, Singh, Kaushlender, additional, Dolui, Suman, additional, Kumar, Ankit, additional, Shukla, B.K., additional, Chattopadhyay, P.K., additional, Makwana, M.N., additional, Shah, K.S., additional, Gupta, S., additional, Balakrishnan, V., additional, Gupta, C.N., additional, Panchal, V.K., additional, Edappala, Praveenlal, additional, Arambhadiya, B., additional, Shah, Minsha, additional, Gautam, Pramila, additional, Raulji, V., additional, Shukla, Praveena, additional, Rajpal, R., additional, Nagora, U.C., additional, Patel, Kiran, additional, Yadava, Nandini, additional, Patel, S., additional, Ramaiya, N., additional, Chowdhuri, M.B., additional, Manchanda, R., additional, Dey, R., additional, Shukla, G., additional, Shah, K., additional, S, Varsha, additional, Raval, J., additional, Purohit, S., additional, Tahiliani, K., additional, Kumawat, D., additional, Jha, S.K., additional, Bisai, N., additional, Atrey, P.K., additional, Pathak, S.K., additional, Gupta, M.K., additional, Gopalkrishana, M.V., additional, Doshi, B.R., additional, Sharma, Deepti, additional, Srinivasan, R., additional, Raju, D., additional, Chauhan, Chetna, additional, Saxena, Y.C., additional, Sen, Abhijit, additional, Pal, R., additional, and Chaturvedi, S., additional

Published
2022
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7. Superconducting current feeder system with associated test results for SSI -1 Tokamak

Author

Tanna, V.L., Gupta, N.C., Dhard, C.P., Rewatkar, P., Saxena, Y.C., Sarkar, B., Misra, R., Amardas, A., Jadhav, P.S., and Sonara, D.

Subjects
Cryostat -- Design and construction, Superconducting magnets -- Research, Business, Electronics, Electronics and electrical industries
Abstract

The superconducting current feeder system consists of 20 numbers 10 kA current leads assembled inside a specially designed cryostat, superconducting bus bars assembled in a vacuum duct with bends and the joint box interface in cryogenic environment at 4.5 K. The design, mechanical properties and hydraulic analysis of the Current Feeder System are described.

Published
2004

8. Integrated cryogenic fluid flow distribution and cooling scheme with helium liquefier/refrigerator for SST-1 magnet system

Author

Sarkar, B., Dhard, C.P., Sahu, A.K., Gupta, N.C., Misra, R., Tank, J., Panchal, P., Tanna, V.L., Phadke, G., Saxena, Y.C., and Patel, J.C.

Subjects
Refrigerators -- Heating, cooling and ventilation, Refrigerators -- Testing, Superconducting magnets -- Research, Superconducting magnets -- Heating, cooling and ventilation, Business, Electronics, Electronics and electrical industries
Abstract

An integrated flow distribution and control system is designed, installed and tested to control the flow rate in superconducting magnetic system SST-1. The cooling scheme of superconducting magnet system (SCMS) with the refrigerator/helium liquefier is described.

Published
2004

13. Results of the model coil tests for the cable-in-conduit conductor for SST-1 Tokamak

Author

Anashkin, O.P., Ivanov, D.P., Keilin, V.E., Kopeikin, N.Ph., Kovalev, I.A., Krivykh, A.V., Kruglov, S.L., Lysenko, V.V., Novikov, S.I., Patrikeev, V.M., Pradhan, S., Saxena, Y.C., Scherbakov, V.I., Shugaev, I.O., and Stepanov, V.V.

Subjects
Russian Research Centre Kurchatov Institute -- Research, Superconducting magnets -- Research, Electrical equipment and supplies industry -- Research, Fusion reactors -- Research, Nuclear industry -- Research, Electrical engineering, Business, Electronics, Electronics and electrical industries, European Organization for Nuclear Research -- Conferences, meetings and seminars
Abstract

A tokamak SST-1 machine is being constructed at the Institute for Plasma Research (IPR), Gandhinagar, India. A Model Coil (MC) has been designed, fabricated and tested at the Kurchatov Institute (KI), Moscow, Russia, in a collaborative effort involving IPR and KI.

Published
2002

14. Production of NbTi CICC's for SST-1 project at IPR

Author

Hosono, F., Iwaki, G., Inaba, S., Suzuki, T., Hiroshima, K., Kikuchi, K., Chida, K., Watahiki, M., Kamata, K., Pradhan, Subrata, and Saxena, Y.C.

Subjects
Superconductors -- Design and construction, Business, Electronics, Electronics and electrical industries
Abstract

The Steady State Superconducting Tokamak SST-1 project at Institute for Plasma Research is examined in the context of production of NbTi Cable-In-Conduit-Conductors.

Published
2001

15. Testing of a low-resistance joint of CICC for Indian Tokamak SST-1

Author

Dudarev, A., Keilin, V., Kruglov, S., Nikolaev, A., Shcherbakov, V., Pradhan, S., and Saxena, Y.C.

Subjects
Superconductors -- Research, Business, Electronics, Electronics and electrical industries
Abstract

Low resistance joint of CICC for the Indian Tokamak SST-1 was tested and temperature dependence of CICC quench current was measured.

Published
2000

20. Design, development and recent experiments of the CIMPLE-PSI device

Author

Kakati, Mayur, primary, Sarmah, Trinayan, additional, Aomoa, Ngangom, additional, Sabavath, Gopikishan, additional, Dihingia, Pubali, additional, Rahman, Mizanur, additional, Ghosh, J., additional, Saxena, Y.C., additional, Satpati, B., additional, Sharma, Gagan, additional, Gupta, Ajay, additional, and De Temmerman, G., additional

Published
2019
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22. Characterization of the plasma current quench during disruptions in ADITYA tokamak.

Author

Purohit, S., Chowdhuri, M.B., Ghosh, J., Joisa, Y.S., Raval, J.V., Jha, S.K., Raju, D., Jadeja, K.A., Manchanda, R., Gupta, M.K., Pathak, S.K., Gupta, C.N., Bhat, S.B., Tanna, R.L., Chattopadhyay, P.K., Saxena, Y.C., Sen, A., and team, ADITYA

Subjects
PLASMA currents, PLASMA instabilities, PLASMA temperature, ELECTRON plasma, ELECTROMAGNETIC forces, PLASMA boundary layers, GALACTIC halos
Abstract

The rate of plasma current-quench during tokamak plasma disruptions determines the electromagnetic forces on the in-vessel components/vacuum vessel. Also halo currents and rapid changes of poloidal field due to the plasma vertical displacement contribute to loads on vessel and in-vessel components and hence needs to be studied thoroughly to safeguard these tokamak peripherals. The plasma current quench occurrence during the spontaneous major disruption has been investigated for a set of ADITYA tokamak disrupted discharges and average plasma current quench and instantaneous current quench rates have been estimated. The fastest area-normalized plasma current (IP) quench time is observed to be ∼5 ms m−2. The estimated post disruption plasma electron temperatures (PDET) are observed to be ∼15–35 eV and proportional to area-normalized plasma current quench time. Further analysis of several disruptive discharges of ADITYA tokamak reveal that the current quench time is inversely proportional to the pre-disruptive values of edge safety factor, qa, and the current quench properties are strongly correlated with the prevailing pre-disruptive plasma magnetohydrodynamic (MHD) activities. For larger values of pre-disruptive qa, the larger island widths of m= 2 and m = 3 MHD modes leads to a significant overlap of these islands. Such an overlap along with the deeper locations of the islands inside the plasma column, as compared to discharges having smaller values of pre-disruptive qa, seems to facilitate the faster current quench. [ABSTRACT FROM AUTHOR]

Published
2020
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23. A novel approach for mitigating disruptions using biased electrode in Aditya tokamak

Author

Dhyani, Pravesh, primary, Ghosh, J., additional, Chattopadhyay, P.K., additional, Tanna, R.L., additional, Raju, D., additional, Joisa, S., additional, Chattopadhyay, Asim Kumar, additional, Basu, Debjyoti, additional, Ramaiya, N., additional, Kumar, S., additional, Sathyanarayana, K., additional, Bhatt, S.B., additional, Atrey, P.K., additional, Gupta, C.N., additional, Rao, C.V.S., additional, Jha, Ratneshwar, additional, Saxena, Y.C., additional, and Pal, R., additional

Published
2014
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29. Design requirement, qualification tests and integration of a thin solid lubricant film of MoS2for the cold mass support structure of the steady state superconducting tokamak SST-1

Author

Doshi, Bharat, primary, Sarkar, B, additional, Sharma, Rajiv, additional, Sahu, A.K, additional, Rewatkar, Pratima, additional, Sonara, Dasharath, additional, Saxena, Y.C, additional, Bhaskar, V.R, additional, Kumar, Senthil, additional, and Nagbhushanam, S, additional

Published
2006
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46. Wavelet analysis of ADITYA edge turbulence: Evidence of non-linear interaction.

Author

Jha, R. and Saxena, Y.C.

Subjects
*TURBULENCE, *TOKAMAKS, *WAVELETS (Mathematics)
Abstract

Examines the edge turbulence in the ADITYA tokamak using wavelet analysis techniques. Use of wavelet filters to separate low and high frequency components; Leptokurtic non-Gaussianity of the filtered plasma density and floating potential fluctuations at high frequencies.

Published
1996
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47. Observation of intermittent structures associated with the low-frequency turbulence in toroidal...

Author

Singh, A.K. and Saxena, Y.C.

Subjects
*PLASMA gases, *TURBULENCE
Abstract

Reports on the observation of intermittent structures associated with the low-frequency turbulence in toroidal magnetized plasma. Characteristics of plasma; Nature of the low-frequency turbulence; Contour plots of the conditionally averaged potentials for different time delays.

Published
1994
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48. Observation of vortex-like coherent structures in the edge plasma of the ADITYA tokamak.

Author

Joseph, B.K., Jha, R., Kaw, P.K., Mattoo, S.K., Rao, C.V.S., and Saxena, Y.C.

Subjects
PLASMA gases, TOKAMAKS, FLUCTUATIONS (Physics)
Abstract

Reports on vortex-like coherent structures in the edge plasma of ohmically heated ADITYA tokamak. Observation of structures on statistical basis when the floating potential fluctuations are analyzed using conditional averaging technique; Stretching of structures until the destruction of their radial isolation across the limiter.

Published
1997

49. Spectral characteristics of low-frequency in toroidal collisional magnetoplasma.

Author

Prasad, G., Bora, D., and Saxena, Y.C.

Subjects
FLUCTUATIONS (Physics), PLASMA gases
Abstract

Reports on the dispersion and spectral characteristics of low-frequency fluctuations excited in collisional toroidal magnetoplasma. Direct measurement of wave-number spectrum; Nonlinear dispersion characteristics; Excitation of the Rayleigh-Taylor instability in the system by the effective gravity.

Published
1994
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50. Experimental study of low-frequency turbulence in a toroidal plasma.

Author

Prasad, G., Bora, D., Saxena, Y.C., and Verma, S.D.

Subjects
TURBULENCE, PLASMA gases
Abstract

Focuses on low-frequency turbulence in a plasma embedded in a pure toroidal magnetic field. Spectral characteristics of the turbulence; Excitation of fluctuations in the long wavelength region by the Rayleigh-Taylor instability; Spectral characteristics in regions where density gradients are parallel to gravity.

Published
1994
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