Reduced Physics Model of the Tokamak Scrape-off-Layer for Pulse Design

Zhang, Xin
Issue date: January 2023
Cite as:
Zhang, Xin. (2023). Reduced Physics Model of the Tokamak Scrape-off-Layer for Pulse Design [Data set]. Princeton Plasma Physics Laboratory, Princeton University.
  author      = {Zhang, Xin},
  title       = {{Reduced Physics Model of the Tokamak Scr
                ape-off-Layer for Pulse Design}},
  publisher   = {{Princeton Plasma Physics Laboratory, Pri
                nceton University}},
  year        = 2023

The dynamic interplay between the core and the edge plasma has important consequences in the confinement and heating of fusion plasma. The transport of the Scrape-Off-Layer (SOL) plasma imposes boundary conditions on the core plasma, and neutral transport through the SOL influences the core plasma sourcing. In order to better study these effects in a self-consistent, time-dependent fashion with reasonable turn-around time, a reduced model is needed. In this paper we introduce the SOL Box Model, a reduced SOL model that calculates the plasma temperature and density in the SOL given the core-to-edge particle and power fluxes and recycling coefficients. The analytic nature of the Box Model allows one to readily incorporate SOL physics in time-dependent transport solvers for pulse design applications in the control room. Here we demonstrate such a coupling with the core transport solver TRANSP and compare the results with density and temperature measurements, obtained through Thomson scattering and Langmuir probes, of an NSTX discharge. Implications for future interpretive and predictive simulations are discussed.

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# Filename Description Filesize
1 LP_139396.pkl 3.63 KB
2 139396cx.sav 685 KB
3 139396mpts.sav 256 KB
4 SOLPS139396_R97_new.pkl 56.5 KB
5 SOLPS139396_R98_new.pkl 56.5 KB
6 SOLPS139396_R99_new.pkl 56.5 KB
7 EFLUX.txt 39 KB
8 EHEAT.txt 39 KB
9 ERCY.txt 39 KB
10 IFLUX.txt 39 KB
11 IHEAT.txt 39 KB
12 IRCY.txt 39 KB
13 README.txt 3.26 KB