NSTX Team Meeting

NSTXNSTX NSTX Team Meeting June 26, 2012

NSTX Team Meeting

Masa Ono

June 26, 2012

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

NFRIKAIST

POSTECHSeoul National U

ASIPPENEA, Frascati

CEA, CadaracheIPP, Jülich

IPP, GarchingASCR, Czech Rep

Columbia UCompXGeneral AtomicsFIUINLJohns Hopkins ULANLLLNLLodestarMITNova PhotonicsNew York UORNLPPPLPrinceton UPurdue USNLThink Tank, Inc.UC DavisUC IrvineUCLAUCSDU ColoradoU IllinoisU MarylandU RochesterU WashingtonU Wisconsin

NSTX-UNSTX-U Supported by

NSTXNSTX NSTX Team Meeting June 26, 2012 2

Time: 1:30 ~ 3:00, June 26, 2012Place: LSB 318, PPPL

• General Items (25 minutes)

• Program Items (25 minutes)

• Engineering Operations Update (10 minutes)

• Research Operations Update (10 minutes)

• NSTX Upgrade Project Update (20 minutes)

NSTX Team Meeting Agenda


• ES&H Issues (J. Levine)

• A serious injury resulted in the Skid Steer Loader Incident.

http://www-local.pppl.gov/esh/Special%20Reports/Skid%20Steer

%20CAP%20Rev%201.pdf .

• From May 10-16, 2012, PPPL conducted a web-based

survey on safety culture.

• Safety Forum was held on May 16, 2012:

The presentations can also be downloaded from there or from the

ESH&S website Safety Forums tab

at http://www-local.pppl.gov/esh/SafetyForum.htm.

Safely, Safely, Safely


NSTX team response summary:• Somewhat low buy-in to safety program.

• Attention to safety on the job is low despite clear directions, few distractions, stable work load, ease of compliance with safety rules, etc.

• Believe emphasis on safety is about what it should be and that group is as safe as others at PPPL.

2012 PPPL Safety Culture Survey Analysis and Interpretation

Thanks for your participation!

Perceived Safety Culture Strengths • A questioning attitude is encouraged

• Safety undergoes constant examination

• Behavior changes are motivated by consequences

Perceived Safety Culture Weaknesses • Human Performance Improvement (HPI) concepts are not used

• Communication is ineffective

• Decision-making does not prioritize safety

Executive Summary


Liquid lithium safety and the SNL accident

•On August 26, 2011 a failure in the lithium circulation system (the Liquid Metal Integrated Test system, or LIMITS) within the SNL Plasma Material Test Facility (PMTF) allowed mixing of liquid lithium and a water/propylene glycol mixture within the LIMITS vacuum chamber


Lithium Safety Assessment for NSTX-ULiquid lithium contact with water must be preventedBased on the discussions, it appears that because of design and engineering features and inventory limits, lithium work in LTX, NSTX and T260 does not have the potential for an explosive event similar to the one that took place at Sandia.

However, the following potential issues were raised for future lithium activities on NSTX-U:

1.Need to consider the potential for and consequences of a major magnet arc to the NSTX vacuum vessel that could breach the vacuum boundary and possibly put in-vessel lithium in contact with water leaking/spraying from a failed coil.

2.Need to consider the potential for and consequences of a water leak inside an NSTX neutral beam box that might come in contact with lithium.

Items 1 & 2 need to be addressed in the forthcoming Safety Assessment Document (SAD) for the NSTX-U and will be reviewed by the NSTX Activity Certification Committee (ACC).• Near term – LITER, dropper, slapper are likely to be ok due to the relatively modest inventory level.

• Longer term – Possible flowing liquid lithium system with significant volume will require careful safety assessment.


NSTX FY 2014 FWP Budget Base (Presidential) Budget is Highly Constrained

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• The presidential base plan is $6.6M lower for FY 2013 and $8.1M lower for FY2014 compared to the CD-2 NSTX National Program budget profile.

• NSTX-U Project has the highest priority and funded largely from the base program. However, the presidential budget reduction directly impacts the upgrade construction.

• Under the base plan, NSTX-U Project completion is April 2015, one year later than the present target date.

• Working with DOE to minimize the schedule impact.

• The senate budget is at Presidential level but the House budget restores the fusion base funding and add $25M to ITER.

• At moment, NSTX-U Project is progressing at full speed for the critical path work scopes preserving the April 2014 early finish.


Six NSTX Experimental Researchers Retired We thank them their valuable contributions for NSTX

Henry Kugel

Michael Bell

Ernesto Mazzucato Dennis Mansfield

Manfred BitterKing-Lap Wong


Heating Systems

T. Stevenson

Device Operation

A. von Halle

Construction

E. Perry

Central I&C

P. Sichta

Power Systems

J. Lacenere

Auxiliary Systems

W. Blanchard

Experimental

Research Ops

Masayuki Ono

(acting)

* ORNL** Columbia University*** Nova Photonics# Univ. of Washington## LLNL

Topical Science Groups

RF Systems

J. Hosea

Physics Operations

D. Mueller

Diagnostic Ops

R. Kaita

Diagnostic

Development

B. Stratton

Boundary Physics

Operations

R. Kaita

(acting)

NSTX Upgrade Department

Project Director

Masayuki OnoProgram Director

Jon Menard

Deputy: Stan Kaye

Engineering Ops

Al von Halle

Project Engineer

Charles Neumeyer

Run Coordination

(position not active during

NSTX Upgrade outage)

NSTX-U Organization – 2012

Theory &

Simulation

N. Gorelenkov

(acting)

Physics Analysis

Stan Kaye

Publications &

Presentations

Computation &

Collaboration

S. Kaye (acting)

B. Davis

Waves and Energetic ParticlesG. Taylor, M. Podestá

Theory: N. Gorelenkov

Advanced Scenarios and ControlS. Gerhardt, E. Kolemen

Lithium Research C. Skinner, M. Jaworski

Theory: D. Stotler

Transport and TurbulenceY. Ren, W. Guttenfelder

Theory: G. Hammett

Macroscopic StabilityJ.-K. Park, J. Berkery**

Theory: A. Boozer**

Boundary Physics V. Soukhanovskii##, A. Diallo

Theory: C.-S. Chang

Cross-cutting and ITER NeedsJ. Menard, R. Maingi*

Theory/Modeling: J. Canik*

Solenoid-free start-up & ramp-up R. Raman#, D. Mueller

Theory: S. Jardin

Present NSTX-U OrganizationNSTX Upgrade Project under the Engineering Department


Snowflake Power Divertor received the 2012 R&D 100 Award!Congratulations to Vlad, Jon, Joon-wook, and Egemen!

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THE DEPARTMENT OF ENERGY

Office of Public AffairsLawrence Livermore National Laboratory•Snowflake Power Divertor, developed with Princeton Plasma Physics Laboratory and the Center for Research in Plasma Physics: A major scientific and technological hurdle for fusion energy is to devise a technique so that materials can withstand the huge flux of heat that emanates from the reactor core. The snowflake divertor, which was demonstrated in two experimental fusion facilities, including the National Spherical Torus Experiment, offers the potential to solve this problem, or at least reduce the heat flux by such an extent that the remaining materials challenge is tractable.

http://science.energy.gov/~/media/_/pdf/news/in-the-news/2012/rd100_2012.pdf


Collaboration with QUESTNewest ST in Japan: All metal PFCs, non-inductive long pulse

Hot spot

Melted moly limiter

ECH sustained discharge

Water cooled tungsten movable limiter

Hot spot developed

Future Direction:

• Higher power ECH (8.5 GHz, 28 GHz)

Total power ~ 1 MW long pulse

• Hot wall for particle control

• All metal CHI being considered

U. Washington / NSTX collaboration

Hot wall

Heater

Cooling panel

Radiation

Shield

Vacuum Vessel

Thermal

Isolator

Hot wall (up to 500 °C) planned for 2014

8.2 GHz, ~ 100 kW


Collaboration with Gamma-10 GroupNew PMI research direction and 28 GHz Gyrotron R&D

28GHz Gyrotron is required in GAMM10

• This Gyrotron will be used to achieve higher plasma performance.

• Ex) axial ion confining potential, heats electrons, heat flux28GHz Gyrotrons are required in some plasma experimental devices.

• NSTX (Princeton University ) 　 : 2MW – several seconds

• Ex) ECH, ECCD, EBW experiment etc.

• Improved design of 28GHz 1MW Gyrotron for development of 2MW Gyrotron

Targeted heat-flux level

EC

H P

ow

er lim

it

ITER relevant level


Have a Fun but Safe Summer!

• For PPPL researchers, the vacation carry over limit through the fiscal boundary (Sept 30, 2012) will be reduced by six days this year so please plan your vacation accordingly.

• Our safety is equally important on site and off site.

• Our home is often the most hazardous place for family particularly for men.

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NSTX Team Meeting

Documents