RF Operations: Commissioning the RF systems and antenna conditioning J. Hosea et al. NSTX-U Supported by Culham Sci Ctr York U Chubu U Fukui U Hiroshima.

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Presentation transcript:

RF Operations: Commissioning the RF systems and antenna conditioning J. Hosea et al. 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 NSTX-U Pre-Forum Meeting 2 January 28, 2015 PPPL V1.0 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

Overall RF system commissioning schedule for FY2015

Complete transmission and matching hookups: −Jan Finish loops −Feb Hookup to loops, set decouplers, −Mar Match vacuum from RFE Complete source assembly and testing −Feb - Mar Complete source assembly and test into dummy load −March Labview updates for power/phase, EPICs system control NSTX-U TC & RFE diagnostics re-commissioning −Feb - March Into MDSplus Prepare diagnostics for supporting HHFW studies −May Complete coaxial Langmuir probe electronic hookups and connections to central computer (MDS plus) −May IR camera commissioning −May ORNL Reflectometer, probe, etc. reactivation −May RF probes at Bay J installation, hookup, commissioning Research Plasma Operation 14 Run Weeks Jan. 2015Feb. 2015Mar. 2015Apr. 2015May 2015Jun. 2015Sep. 2015Jul. 2015Aug 2015 Bakeout ISTP / Comm CD4 HHFW system commissioning schedule for FY2015

Transmission line and RF probe elements Resonant loop connections to top/bottom antenna element feeds Coax connected Langmuir probes at Bay J top and bottom −Two probes per tile in rows 2, 3, and 4

Conditioning of antenna −May - June Vacuum conditioning  Condition to maximum voltage after Boronization  Condition to maximum voltage after adding Lithium −June - July Plasma conditioning  Plasma condition to maximum power with RF only  Plasma condition with RF + NB o NB1 o NB2 o NB1 + NB2 o Determine antenna voltage limit o Set acceptable antenna/separatrix gap for each NB configuration Research Plasma Operation 14 Run Weeks Jan. 2015Feb. 2015Mar. 2015Apr. 2015May 2015Jun. 2015Sep. 2015Jul. 2015Aug 2015 Bakeout ISTP / Comm CD4 Antenna conditioning schedule for FY2015