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Prototype Multi-Energy Soft X-ray Diagnostic for EAST Kevin Tritz Johns Hopkins University NSTX-U Monday Physics Meeting PPPL, Princeton, NJ June 25 th,

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Presentation on theme: "Prototype Multi-Energy Soft X-ray Diagnostic for EAST Kevin Tritz Johns Hopkins University NSTX-U Monday Physics Meeting PPPL, Princeton, NJ June 25 th,"— Presentation transcript:

1 Prototype Multi-Energy Soft X-ray Diagnostic for EAST Kevin Tritz Johns Hopkins University NSTX-U Monday Physics Meeting PPPL, Princeton, NJ June 25 th, 2012 NSTX-U Supported by Culham Sci Ctr York U Chubu U Fukui U Hiroshima U Hyogo U Kyoto U Kyushu U Kyushu Tokai U NIFS Niigata U U Tokyo JAEA Inst for Nucl Res, Kiev Ioffe Inst TRINITI Chonbuk Natl U NFRI KAIST POSTECH Seoul Natl U ASIPP CIEMAT FOM Inst DIFFER ENEA, Frascati CEA, Cadarache IPP, Jülich IPP, Garching ASCR, Czech Rep Coll of Wm & Mary Columbia U CompX General Atomics FIU INL Johns Hopkins U LANL LLNL Lodestar MIT Lehigh U Nova Photonics ORNL PPPL Princeton U Purdue U SNL Think Tank, Inc. UC Davis UC Irvine UCLA UCSD U Colorado U Illinois U Maryland U Rochester U Tennessee U Tulsa U Washington U Wisconsin X Science LLC

2 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) ME-SXR fast T e technique used to reconstruct RF heated T e profile between MPTS measurements 2 Reconstructed T e shows peak >4keV ~15% higher than MPTS measurement MPTS profiles used to cross-check ME-SXR reconstruction, provide normalization L. Delgado-Aparicio, et al., JAP 102, 073304 (2007). L. Delgado-Aparicio, et al., PPCF 49, 1245 (2007).

3 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) Original diode-based ME-SXR system operated on NSTX during 2010 run Edge ME-SXR tangential, mid-plane view on NSTX vacuum hardware mounted on 6” Conflat attached to port-mounted gate valve amplifiers mounted on back (atmosphere-side) of Conflat flange

4 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) Abel inversion of tangential ME-SXR data shows detailed edge dynamics before profile crash 16 kHz internal MHD mode coupled to edge edge MHD slows prior to profile crash SXR profile begins to flatten strong steepening of edge emission profile prior to crash (possible C accumulation?)

5 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) Atmospheric re-entrant ‘in-vessel’ design necessary to accommodate EAST port geometry

6 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) ME-SXR assembly to be mounted at mid-plane on port side wall ME-SXR provides coverage from edge to mid-radius FOV footprint in plasma can be adjusted by changing mounting position/angle

7 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) In vessel housing provides compact system for ease of mounting

8 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) Expanded view of ME-SXR assembly

9 NSTX-U NSTX-U Monday Physics Meeting – EAST ME-SXR, K. Tritz (06/25/2012) Toroidally-displaced core/edge ME-SXR systems currently proposed for EAST under DOE international solicitation ME-SXR proposed in “International collaboration to advance the three dimensional science of stability and control for long-pulse, high-performance tokamaks” Gates/Sabbagh System designed to study lithium effects on ELM and MHD/NTM behavior, disruption pre- cursors and thermal quench, and positioned to study effects of planned 3D coils on plasma

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