Nitrogen Gas Heating and Supply System for SST-1 Tokamak

Ziauddin KHAN; Firozkhan PATHAN; Yuvakiran PARAVASTU; Siju GEORGE; Gattu RAMESH; Hima BINDU; Dilip C. RAVAL; Prashant THANKEY; Kalpesh DHANANI; Subrata PRADHAN

doi:10.1088/1009-0630/15/2/16

Plasma Science and Technology > 2013 > 15(2): 157-160. > DOI: 10.1088/1009-0630/15/2/16

Ziauddin KHAN, Firozkhan PATHAN, Yuvakiran PARAVASTU, Siju GEORGE, Gattu RAMESH, Hima BINDU, Dilip C. RAVAL, Prashant THANKEY, Kalpesh DHANANI, Subrata PRADHAN. Nitrogen Gas Heating and Supply System for SST-1 Tokamak[J]. Plasma Science and Technology, 2013, 15(2): 157-160. DOI: 10.1088/1009-0630/15/2/16

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Nitrogen Gas Heating and Supply System for SST-1 Tokamak

Institute for Plasma Research, Bhat, Gandhinagar - 382 428, India

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Received Date: January 18, 2012

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Abstract

Abstract

Steady State Tokamak (SST-1) vacuum vessel baking as well as baking of the first wall components of SST-1 are essential to plasma physics experiments. Under a refurbishment spectrum of SST-1, the nitrogen gas heating and supply system has been fully refurbished. The SST-1 vacuum vessel consists of ultra-high vacuum (UHV) compatible eight modules and eight sectors. Rectangular baking channels are embedded on each of them. Similarly, the SST-1 plasma facing components (PFC) are comprised of modular graphite diverters and movable graphite based limiters. The nitrogen gas heating and supply system would bake the plasma facing components at 350 ^oC and the SST-1 vacuum vessel at 150 ^oC over an extended duration so as to remove water vapour and other absorbed gases. An efficient PLC based baking facility has been developed and implemented for monitoring and control purposes. This paper presents functional and operational aspects of a SST-1 nitrogen gas heating and supply system. Some of the experimental results obtained during the baking of SST-1 vacuum modules and sectors are also presented here.
- SST-1,
- heating and supply system,
- graphite based limiters,
- PFC

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