NDLI: Overall Performance of SST-1 Tokamak Vacuum System

Content Provider	IEEE Xplore Digital Library
Author	Ziauddin Khan Pathan, F.S. George, S. Dhanani, K.R. Paravastu, Y. Semwal, P. Babu, G.R. Pradhan, S.
Copyright Year	1973
Abstract	Vacuum system of steady-state superconducting tokamak (SST-1) is comprised of 23 m³ ultrahigh vacuum (UHV) chamber with baking channels embedded on the vacuum vessel (VV) being heated with a dedicated nitrogen gas baking facility, gas puffing system, wall conditioning system and 39 m³ high vacuum cryostat (CST) chamber housing the superconducting magnets, cold structures, 80-K thermal shields and associated auxiliary components. The pumping system for the SST-1 VV consists of two turbo-molecular pumps each of 5500 l/s (N₂ gas) capacity providing a total effective pumping speed of 4675 l/s and the CST consists of three such pumps with a total effective pumping speed of 3250 l/s. To achieve UHV inside the VV, it was baked at 135 °C for a longer duration of 100 h, while four numbers of graphite based limiters were baked at 250 °C for 50 h. An ultimate pressure of 4.6 × 10^-8 mbar was achieved inside VV while an ultimate vacuum achieved inside the CST was 1.1 × 10^-5 mbar. The gas puffing system has performed satisfactorily during the plasma trials assisted with electron cyclotron resonance heating preionizations. This paper describes our overall experience during the entire campaign of successful operation of SST-1 during first plasma.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1006
Ending Page	1011
Page Count	6
File Size	2149944
File Format	PDF
ISSN	00933813
Volume Number	42
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tokamaks Vacuum systems Superconducting magnets Plasma temperature Nitrogen Hydrogen ultrahigh vacuum (UHV). Gas feed nitrogen gas baking pumping system steady-state superconducting tokamak (SST-1) ultrahigh vacuum (UHV)
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

SST-1 Status and Plans

Precision Signal Conditioning Electronics for Cryogenic Temperature and Magnetic Field Measurements in SST-1

The Superconducting Magnets for EAST Tokamak

42-GHz/500-kW Electron Cyclotron Resonance Heating System on Tokamak SST-1

Superconducting magnet system for the TPX Tokamak

A Magnet Field System for a High Density Tokamak Reactor

Optimisation of the magnet system of a 200 MW steady state tokamak

Superconducting current feeder system with associated test results for SST-1 Tokamak

Plasma Startup Design of Fully Superconducting Tokamaks EAST and KSTAR With Implications for ITER

Overall Performance of SST-1 Tokamak Vacuum System

Similar Documents

SST-1 Status and Plans

Precision Signal Conditioning Electronics for Cryogenic Temperature and Magnetic Field Measurements in SST-1

The Superconducting Magnets for EAST Tokamak

42-GHz/500-kW Electron Cyclotron Resonance Heating System on Tokamak SST-1

Superconducting magnet system for the TPX Tokamak

A Magnet Field System for a High Density Tokamak Reactor

Optimisation of the magnet system of a 200 MW steady state tokamak

Superconducting current feeder system with associated test results for SST-1 Tokamak

Plasma Startup Design of Fully Superconducting Tokamaks EAST and KSTAR With Implications for ITER

Overall Performance of SST-1 Tokamak Vacuum System