ITER-L-Mode Database
Overview of Confinement Parameters
-
Fusion Triple Product Computed from ITER Database
-
L- Mode Database (786 Shots)
-
JET (342 shots)
-
JT-60U (363 shots)
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Fusion Confinement Parameter
n tauE,th
-
L- Mode Database (1312 Shots)
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JET (433 shots)
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JT-60U (363 shots)
Sorting of Machine Parameters
Linear Regression Fit
There
are 8 engineering parameters:
M, R, a, kappa, B, I, n, P.
The method is to perform a linear regression fit on
log(tau) = const + alphaMlog(M)
+ alphaRlog(R)
+ alphaalog(a)
+ alphakappalog(kappa)
+ alphaBlog(B)
+ alphaIlog(I)
+ alphanlog(n)
+ alphaPlog(P).
Our regression was done in Mathematica.
Our result is compared with Kaye's 97 formula.
Symbols
in Database |
TAUTH |
MEFF |
RGEO |
AMIN |
KAPPA |
BT |
IP |
NEL |
PLTH |
Variables
in Physics |
tau |
M |
R |
a |
kappa |
BT |
Ip |
n |
P |
Units
in Formula |
s |
amu |
m |
m |
|
T |
MA |
1019m-3 |
MW |
| Parameters |
const |
alphaM |
alphaR |
alphaa |
alphakappa |
alphaB |
alphaI |
alphan |
alphaP |
| Kaye's 97P |
log0.023 |
0.20 |
1.89 |
-0.06 |
0.64 |
0.03 |
0.96 |
0.40 |
-0.73 |
Redo 97P
std error |
-3.78
0.05 |
0.20
0.02 |
1.89
0.04 |
-0.06
0.04 |
0.64
0.03 |
0.03
0.02 |
0.96
0.02 |
0.40
0.02 |
-0.734
0.009 |
Comments to Bo Hu bhu@physics.utexas.edu