BPP experiments @ the tokamak GOLEM
Essential parameters:
Date: 090217
BPP used for Plasma Float potential $\varphi_{fl}$, BPP_LP used in sweped mode
Probe position:The BPP top from the plasma centre $d=50$ mm
The VA characteristic resistor:20$\Omega$
Sweeping frequency:1000
Experimental setup
Ball pen probe @ North-East port
setup
Discharges involved
Discharge #
Vacuum #
$U_{B_t}$ [V]
Analysis
Comment
#23297
#23196
1100
link
#23295
#23194
1200
link
#23296
#23192
1300
link
23297:
23295:
23296:
Reproducibility
Iplasma:
Uloop:
Btoroidal:
Fits definition
Azooz fit definition:$I(a,V_{bias})=\exp[a_1 \tanh\{(V_{bias}+a_2)/a_3\}]+a_4$
Classical fit definition:$I(V_{bias},I_{sat},V_{fl},T_e,C)=-I_{sat}*(1-C*(V_{bias}-V_{fl}))*(1-\exp((V_{bias}-V_{fl})/T_e)$
Time cross compares
Time
data
$B_t$
data
$a_1$
data
$a_2$
data
$a_3$
data
$a_4$
data
$I_{sat}$
data
$V_{pl}$
data
$T_e$
data
$C$
data
$Ratio_{Sat}$
data
$U_{fl}$
data
alpha
data
$\varphi_{fl}$ x $\varphi_{pl}$
$B_t$ cross compares
Time
data
$B_t$
data
$a_1$
data
$a_2$
data
$a_3$
data
$a_4$
data
$I_{sat}$
data
$V_{pl}$
data
$T_e$
data
$C$
data
$Ratio_{Sat}$
data
$U_{fl}$
data
alpha
data
$\varphi_{fl}$ x $\varphi_{pl}$
References
Aasim Azooz: Langmuir probe data analysis code. Mathworks.