Engineering Aspects of Microwave

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Presentation transcript:

Engineering Aspects of Microwave XXVI International Symposium on Discharges and Electrical Insulation in Vacuum ISDEIV 2014 Engineering Aspects of Microwave Diagnostic in ITER K. M. Patel, V. S. Udintsev, G. Vayakis, T. Giacomin, D. Johnson, Ph. Maquet, H.K.B. Pandya, C. Penot, M. Portales, M. Proust, J. W. Oosterbeek, V. Vershkov, M. J. Walsh Kaushal Patel Institute for Plasma Research, Nr. Indira Bridge, Bhat Village, Gandhinagar - 382428 Category : C4 Paper No: 247 2 October 2014, Session: 7 The views and opinions expressed herein do not necessarily reflect those of the ITER Organization

ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247 Outline Introduction Environment for ITER Diagnostic Microwave Diagnostic in ITER: Overview Microwave diagnostic in ITER - ECE diagnostic in Port Plug - The design of inboard (HFS) waveguides - Front-end of LFS Reflectometry Summary and Outlook 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

ITER is twice as large as our largest existing experiments M. Walsh et al., SOFE, 2011 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

Environment of ITER Diagnostic Relative to existing machines, on ITER some of the diagnostic components will be subject to (relative to JET) High neutron ~ 3 x 1018 m-2s-1 and gamma fluxes (up to x 10) Neutron heating 1 MW/m3 (very high) High electron temperatures (up to x 3 to 5) Plasma Current: 15 MA (up to x 3 to 5) Long pulse lengths: 3000 sec (up to x 100) High neutron fluence: 0.3 MW y m-2 in active phase (> 105 ! ) For Instrumentation and Controls relevant are: High magnetic field and radiation levels in port cell Long cables to diagnostic building Other challenges: Materials, Integration in the harsh environment etc. M. Walsh et al., SOFE, 2011 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

Microwave Diagnostics in ITER: Overview ECE; Eq. Port 09 (US/IN) CTS (LFS); Eq. Port 12 (EU) HFS Refl., Upper Ports 8, 9, 17 (RF) Plasma. Pos. Refl., Upper Ports 1, 14, EqP 10 (EU) LFS Refl., Eq. Port 11 (US) 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

ECE Diagnostic in Port Plug 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247 HFS Reflectometry UPs# 08, 09 UP# 17 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

HFS Reflectometry – Block Diagram 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

HFS Reflectometry: Portcell & Gallery 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

The design of inboard (HFS) waveguides utline 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

Low Field Side Reflectometry Eq#11 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

Front-end of the LFS Reflectometry 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247 Summary & Outlook Microwave diagnostic at ITER are in preliminary design phase. To check integrity with other diagnostic system within vacuum vessel, port plug and port cell, design review of microwave diagnostic is ongoing. In vessel components of microwave diagnostics are design & protected in such a way it function in ITER environment with least possible maintenance. 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247

ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247 Thank You The views and opinions expressed herein do not necessarily reflect those of the ITER Organization 2 October 2014 ISDEIV 2014 KAUSHAL PATEL ISDEIV 2014 ORAL C4 247