Indigenous Manufacturing realization of TWIN Source

10th Asia Plasma and Fusion Association Conference

Pandey, R.^1 ; Bandyopadhyay, M.^2,3 ; Parmar, D.^2 ; Yadav, R.^2 ; Tyagi, H.^2 ; Soni, J.^1 ; Shishangiya, H.^2 ; Sudhir Kumar, D.^2 ; Shah, S.^2 ; Bansal, G.^1 ; Pandya, K.^1 ; Parmar, K.^1 ; Vuppugalla, M.^1 ; Gahlaut, A.^1 ; Chakraborty, A.^1

Institute for Plasma Research, Nr. Indira Bridge, Bhat, Gandhinagar

382428, India^1

ITER-India, Institute for Plasma Research, Bhat-Motera Road, Ahmedabad

380005, India^2

Homi Bhabha National Institute (HBNI), Anushaktinagar, Mumbai

400094, India^3

关键词: Functional requirement;    Manufacturing design;    Manufacturing process;    Nuclear environments;    Operating temperature;    Operational experience;    Operational requirements;    Vacuum-tight joints;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/823/1/012029/pdf
DOI  :  10.1088/1742-6596/823/1/012029

来源: IOP

【 摘 要 】

TWIN source is two RF driver based negative ion source that has been planned to bridge the gap between single driver based ROBIN source (currently operational) and eight river based DNB source (to be operated under IN-TF test facility). TWIN source experiments have been planned at IPR keeping the objective of long term domestic fusion programme to gain operational experiences on vacuum immersed multi driver RF based negative ion source. High vacuum compatible components of twin source are designed at IPR keeping an aim on indigenous built in attempt. These components of TWIN source are mainly stainless steel and OFC-Cu. Being high heat flux receiving components, one of the major functional requirements is continuous heat removal via water as cooling medium. Hence for the purpose stainless steel parts are provided with externally milled cooling lines and that shall be covered with a layer of OFC-cu which would be on the receiving side of high heat flux. Manufacturability of twin source components requires joining of these dissimilar materials via process like electrode position, electron beam welding and vacuum brazing. Any of these manufacturing processes shall give a vacuum tight joint having proper joint strength at operating temperature and pressure. Taking the indigenous development effort vacuum brazing (in non-nuclear environment) has been opted for joining of dissimilar materials of twin source being one of the most reliable joining techniques and commercially feasible across the suppliers of country. Manufacturing design improvisation for the components has been done to suit the vacuum brazing process requirement and to ease some of the machining without comprising over the functional and operational requirements. This paper illustrates the details on the indigenous development effort, design improvisation to suits manufacturability, vacuum brazing basics and its procedures for twin source components.