NSTX Upgrade Project – Final Design Review June 22 - 24, 2011 1 NSTX Supported by College W&M Colorado Sch Mines Columbia U CompX General Atomics INEL

NSTX Upgrade Project – Final Design Review June 22 - 24, 2011 1

NSTXNSTX Supported by

College W&MColorado Sch MinesColumbia UCompXGeneral AtomicsINELJohns Hopkins ULANLLLNLLodestarMITNova PhotonicsNew York UOld Dominion UORNLPPPLPSIPrinceton UPurdue USNLThink Tank, Inc.UC DavisUC IrvineUCLAUCSDU ColoradoU IllinoisU MarylandU RochesterU WashingtonU Wisconsin

Multipoint Thomson Scattering (MPTS)

Culham Sci CtrU St. Andrews

York UChubu UFukui U

Hiroshima UHyogo UKyoto U

Kyushu UKyushu Tokai U

NIFSNiigata UU Tokyo

JAEAHebrew UIoffe Inst

RRC Kurchatov InstTRINITI

KBSIKAIST

POSTECHASIPP

ENEA, FrascatiCEA, Cadarache

IPP, JülichIPP, Garching

ASCR, Czech RepU Quebec

George LabikM. Denault, H. Feder , M. Smith

Princeton Plasma Physics LaboratoryNSTX Upgrade ProjectFinal Design Review

LSB, B318June 22-24, 2011

NSTX Upgrade Project – Final Design Review June 22 - 24, 2011

MPTS CSU

2

•The MPTS is a multi-time, multi-spatial point Thomson Scattering diagnostic for measuring the electron temperature and density profiles on the National Spherical Torus Experiment (NSTX) ST research facility. In 2009 the US Department of Energy approved the initiation of a project to upgrade the NSTX for approved performance. As a result, a new larger Center stack (CS) is being designed to provide enhanced operating capabilities. It is necessary to upgrade the MPTS to accommodate the new CS and provide MPTS coverage of NSTX Upgrade plasma operation.

The vacuum boundaries closest to the vacuum vessel (VV) define the extent of this design review . Vacuum boundaries include torus interface valves, vacuum windows and blank covers. The Bay L port includes a number of diagnostics vacuum interfaces besides MPTS since they impact the port design but are not themselves part of this review.

The VV interfaces cost is estimated at $967 K .The installation is to be completed in mid 2013. The cost and schedule details are covered in the project summary elsewhere.

A successful PDR was conducted on 9 May 2011.

The MPTS VV FDR is planned for late August 2011.


MPTS CSU 3

The ex vessel components which define the remainder of MPTS is a separate job. The work approval form has been submitted for management review and approval.

The MPTS vacuum vessel modification at Bay L resulted in a design incorporating reinforcement of the VV at Bay JKLA, the MPTS FDR will include the optimization of the Bay L vacuum vessel reinforcement required to mitigate stresses from the upgrade enhanced operation. The optimization is proceeding in response to a chit from the PDR concerning the effect of the reinforcement on the Resistive Wall Mode (RWM) coils performance.


MPTS – System and Collecting Optics 4


MPTS – Isometric View- Vessel Section 5

•Laser

•Laser input •Vacuum interface

•Collection Optics•Box

•Bay F

•Bay L

•Background CHERS•Field of View

•FIReTIP

•TIV

•Bellows

•Ceramic •Break


NSTX Test Cell 6

•N•Bay L

•Bay F

•Laser Optics Box

•Laser Dump


MPTS – X Section 1 of VV – Overlay New and Existing Laser Centerlines 7

•Existing Lasers Path

•New Lasers Path


MPTS-X Sect 2 VV – Overlay New and Existing Laser Centerlines 8


MPTS-X Sect 3 VV-Overlay of New and Existing Laser Centerlines 9


MPTS _ Test Cell and Vacuum Vessel 10

•Laser flight tube

•Bay L TIV and Structural Support

•Laser Optics Box


MPTS-Test Cell looking South West_ Laser Dump 11

• MPTS – View Looking South _ Bay L and Laser External Dump

•Bay L

•Laser dump

•Machine vacuum

•Vacuum window

•Remote ly Operable•Laser Mirrors


MPTS – Laser input _ VV Interface 1 12

•Lasers VV Interface

•Calibration probe •VV Interface

•Collection Optics Box

•Fiber Bundles

•Fiber Array

•Vacuum Window•And Aperture

•Bay F


MPTS – Laser VV Interface 2 13

•Elliptical Plug •1.5 Inch Thk.

•Fiber Array •Adjustment and Support


MPTS – Vessel Laser Input and Calibration Probe Port 14


MPTS _ Vacuum Vessel Cross Section _ Laser Input 15


MPTS _ Laser and Background CHERS 16

•Background CHERS •Field of view

•Bay L •VV Interface

•Upgrade Center Stack


MPTS – Laser Spacing 17

•RWM Coils •Vertical Members

•1.5 inches additional toroidal space provided


MPTS _ Bay L Port 18


MPTS – Bay L 19

•MPTS•High K •scattering

•Back•CHERS

•FIReTIP

•TIV

•El Break

•Bellows

•SPRED

•XEUS

•12 inch OD•Tube


MPTS – Bay L 20

•Laser dump tube

•Steering•Mirror


MPTS – VV Mid Plane X Section 21


22

•Typical i/2 inch thick plate •On vessel shell

•Reinforcement components

•Typical cutout for PF coils

•L

•K

•J

•A

•Existing •FIDA Diagnostic

•Bridging Bar •3 x 4 inches


23

•Reinforcement components

•L•K •A

•J

•Typical ½ thick plate •On vessel shell


24


25


26


MPTS – Bay L Platform 27


MPTS-Bellows 28


MPTS _ Mitered 90 Degree Ell _ Steering Mirror 29


NSTX VV Typical Port Weld Detail 30

Documents

NSTX Upgrade Project – Final Design Review June 22 - 24, 2011 1 NSTX Supported by College W&M Colorado Sch Mines Columbia U CompX General Atomics INEL