# Presentation: 409746

## NSTX FY2009-11 Research Milestones(base and  incremental  )

**Expt. Run Weeks:**

_**Transport & Turbulence**_
_**Macroscopic Stability**_
_**Boundary Physics**_
_**Wave-Particle Interaction**_
_**Solenoid-free start-up, ramp-up**_
_**Advanced Scenarios & Control**_
**  **
**Joint Research Targets (3 US facilities):**

**FY2010**

**FY2009**

**FY2011**

**14 (20)**

**15 (20)**

**15 (20)**

**Understand physics of RWM stabilization & control vs. rotation**

**Study how j(r) is modified by super-Alfvénic ion-driven modes**

**Perform high-elongation wall-stabilized operation at lower n****e**

**Study turbulence regimes responsible for ion and electron energy transport ****(formerly FY2010)**

**Assess H-mode characteristics**
**as a function of collisionality and lithium conditioning**

**Particle control and hydrogenic fuel retention**

**TBD *****(...Characterize H-mode pedestal structure...)***

**Improve understanding of the heat transport in the scrape-off layer**

**Relationship between lithiated surface conditions and edge and core plasma conditions**

**Assess predictive capability of mode-induced fast-ion transport**

**Dependence of integrated plasma performance on collisionality**
***(FY2010 incremental accelerates this by 1yr if LLD and/or HHFW achieve FY2010 goals)***

**Characterize HHFW heating, CD, and ramp-up in deuterium H-mode**
***Joint milestone w/ solenoid-free TSG***

**Assess sustained operation above the no-wall limit at reduced collisionality**

**Assess sustainable beta and disruptivity near and above the ideal no-wall limit. **

**Integrate MHD mode modification of j(r) into optimized operation**

## FY09-11 upgrades support highestpriorities and enable key research thrusts:

- 2.	Implement BES to complement existing high-k scattering diagnostic

- Implement liquid lithium divertor for pumping, and investigate other potential benefits:
- Improved confinement
- Reduction/elimination of ELMs
- Compatibility of LLD with high flux expansion
- Longer-term: steady-state high-heat-flux handling

- 3.	Upgrade HHFW system for higher PRF  + ELM resilience
- Determine if HHFW can ramp-up IP in H-mode (BS+RF overdrive)
- Determine if HHFW can heat high-N advanced H-mode scenarios
- HHFW/ICRF also important for NHTX/CTF/ITER

- Measure full wavenumber spectrum of turbulence (also *AE eigenfunction)
- Determine modes responsible for anomalous transport of energy & momentum

- Implement MSE-LIF for pitch angle and |B| w/o heating beam
- Greatly expanded research flexibility, reconstruct fast-ion p (from total – thermal)

## NSTX Upgrade PlanStrong Collaboration Components

- FY 09

- FY 10

- FY 11

**Run Weeks**
**Base**** / ****Increment**

- Increment

**14 **

**14 **

**6**

**6**

**14 **

**6**

**NSTX Upgrade Plan****Strong Collaboration Components**

**CHI**

**Boundary**

- LLD (SNL)

- Dual Li Shaker

**Heating & CD**

**Energetic Particles**

- HHFW Antenna Upgrade

- HHFW ELM Resilience (ORNL)

- Edge Sample Probe (Purdue)

- Divertor Bolometer

-  control (NBI)

- MSE/LIF (Nova Photonics)

- BES (U Wisconsin)

- Fast IR Camera (ORNL)

**Profile / T&T**

**MHD**

- High-k scattering
- Remote control (UCD)

- Absorber Control Coils (U. Wasington)

- FIDA (UCI)

- Tang. FIDA (UCI)

- Extra MPTS Channels

- Divertor Thomson (LLNL)

- Divertor Spectrometer (LLNL)

**OH Spare Preparation (ASIPP)**

- 350 kW ECH/EBW (ORNL)

***Main Upgrades' Cost and Schedule will be reviewed by Engineering Management***

## HHFW Double-Feed Antenna Upgrade

**Upgraded Antenna Main Features**

**HHFW Double-Feed Antenna Upgrade**
**To Double Injected Power and Couple to H-mode with ELMs**** **

**Present Feed**

**New**
**Feed**

**Present Ground**

**New **
**Ground**

**Antenna Straps**

**New antenna straps**

*J. Hosea, R. Ellis*

**• ****Symmetric feed**
**• ****Ground at antenna mid-plane**
**• ****Maximum radiation at mid-plane**
**• ****Voltage at feed-thru reduced by ~ 1.4**
**• ****Power capability should be up by ~ 2**

**• ****Mid-plane "hard" ground implemented due to concern for a ceramic insulator based support against disruptive loads.**
**• ****External loops will be installed as soon as possible, early in the FY 09 run at high priority**
**• ****"ELM Resilience" system will be implemented in FY 10 in collaboration with ORNL.  ELM detection- shut-down approach and/or hybrid couplers**

**Antenna Installation is completed**

## Liquid Lithium Divertor (LLD) for FY 10

- * SNL has 3 plates ready for brazing

**• ****SNL Status**
** ****3 plates machined. Brazing to be done 1/20/09. Will ship first 2 of 6 plates for Moly coating 1/30/09. Arrival at PPPL 2/15-16/09. **
** ****Remaining 4 plates will ship for Moly coating 2/16/09. Arrival at PPPL 3/01-07/09. (only 4 plates to be installed).**
** ****Control Rack design being completed. Parts being purchased. Software starting. Control Rack delivery 3/30/09. **
**• ****PPPL Status**
** ****Aluminum prototype made by step-bending accurate to 0.007”. Will proceed to complete Moly coated Cu plate.**
** ****Active engineering of interfaces and diagnostic sensors in progress.**
** ****Li testing off-line with prototype LLD surfaces in progress.**

**Liquid Lithium Divertor (LLD) for FY 10**
**Manufacturing of LLD plates more challenging than originally anticipated**

**To be installed in August 2009**

## LLD Diagnostic Tile Sensors

**      ****- 99 Langmuir Probes **
**         ****(33 sets of 3 toroidal rows) **
**         ****[UIUC triple probe electronics]**
**• ****GAP-E Tile (****Z****weben)**
**      ****- 2 BEAP bias electrodes **
**      ****- 2 TC (in IR Camera FOV) ****      - 5 Langmuir Probes**
**	****• ****Using Existing electronics**
**• ****GAP-H Tile (Gerhardt)**
**     ****- 5 2D magnetic sensors for control**
**     ****- 2 TC (in IR Camera FOV)**
**	****• ****Using Existing electronics**
**• ****GAP-K Tile (Zweben)**
**      ****- 2 BEAP bias electrodes **
**      ****- 5 Langmuir Probes**
**      ****- 2 TC (in IR Camera FOV)**

**• ****Graphite tile  transition regions between segments contain thermocouples, Langmuir probes, and magnetic & current sensors**

**LLD Diagnostic Tile Sensors**
**NSTX PAC Recommended Adequate Diagnostic Capability for LLD**

**Langmuir probe tile (Thesis research)**

**LLD diagnostic scopes are being re-examined to minimize the cost while retaining key capabilities**

## Beam Emission Spectroscopy for FY 10

**BES Diagnostic Status:**
**BES viewing ports installed / lens being procured**
**U. Wisconsin manufacturing detectors to be delivered in two stages (16 & 16) to be available for FY 10 run.  **
**Cable trays and diagnostic room readied**
**Fiber procurement and fiber holder design being finalized for fabrication**
**Aiming to commission the full system in FY 10**

**Beam Emission Spectroscopy for FY 10**

## Motional Stark Effect -Laser Induced Fluorescence (MSE-LIF) for FY 10 - 11

**• ****A PDR for entire system held on 1/9/09**
**• ****Extension of mezzanine and relocation of two racks to make space for DNB completed during 2008 outage**
**• ****Design work for AC power services and cable tray complete**
**• ****The main PPPL tasks are: **
**reconfiguring an existing port on the vessel for the DNB/laser flight tube,**
**modifying a port cover to accommodate a new window and shutter for the viewing optics, **
**providing AC power and water to DNB/laser, **
**resolving a number of interferences (significant scopes) **
**• ****The main Nova Photonics tasks are: **
**reconfiguring the DNB for installation on the NSTX platform, **
**design and fabrication of magnetic shielding for beam, **
**take delivery of laser, and lab testing of entire system**

**To Measure E****r****(r), B(r)**

***E. Foley, F. Levinton ***

**New MSE-LIF Platform**