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- A.M. Thakar, U.K. Baruah, R. Dave, H.A. Dhola, S. Gajjar, V. Gupta, D.C. Parmar, A.M. Patel, B.M. Raval, N.P. Singh
IPR, Bhat, Gandhinagar, India
- J.Y. Journeaux, D. Lathi, B. Schunke, S. Svensson
ITER Organization, St. Paul lez Durance, France
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A Neutral Beam Injection system is used for either heating or diagnostics of the plasma in a tokamak. The Diagnostics Neutral Beam system [1] for ITER based on acceleration of negative ions; injects a neutral (Ho) beam at 100KeV with specified modulation into the plasma for charge exchange recombination spectroscopy. DNBPS system consists of HVPS, HCPS and RF Sources. The system operates in a given operating sequence; very high electromagnetic transients are intrinsically generated during operation. Instrumentation is to be provided to operate the DNBPS system remotely with required control and protection. The operation is to be synchronized with ITER operation as directed by CODAC. Instrumentation functionality includes - Acquisition of injector performance parameters,
- Operation and control of necessary auxiliaries,
- Protection of DNB components and power supplies using interlock system,
- To ensure safe operation of high voltage hazardous systems and
- To facilitate test and maintenance of individual subsystem.
This paper discusses about proposed DNB instrumentation architecture. The design generally follows the protocols from the ITER- Plant Control Design Handbook.
[1] Lennart Svensson et.al, "Instrumentation and diagnostics for the ITER Neutral Beam System", Fusion Engineering and Design 86 (2011)
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