Tokamak GOLEM - Shot Database - #44740

The date of discharge execution24-04-30 16:40:29 The session missionExperiments/PlasmaEdge/SpontaneousTransportBarrierHePlasma/Macha-2024-ScPSpontaneous transport barrier in the He plasma The session ID 44712 The discharge commentold param test He r=75Discharge command/Dirigent.sh --discharge --operation.discharge "style='standard',vacuum_shot='44738'" --infrastructure.bt_ecd "U_Bt=950,t_Bt=0,O_Bt='CW',U_cd=400,t_cd=0,O_cd='CW'" --infrastructure ...

     Technological parameters

• Working Gas: \(p\sub{chamber}\sup{discharge,before}\)=0.77 mPa; \(p\sub{chamber}\sup{discharge,pre}\)=19.00 mPa (\(p\sub{WG}\sup{request}\)= 15 mPa@\(X\sub{WG}\sup{request}\)=He )
• Toroidal magnetic field: \(U\sub{B\sub{t}}\sup{request}\)=950 V@\(t\sub{B\sub{t}}\sup{request}\)=0.0 us
• Current drive field: \(U\sub{E\sub{cd}}\sup{request}\)=400 V@\(t\sub{cd}\sup{request}\)=0.0 us

    Plasma:

• Plasma: yes or no: ☑
• Time parameters:\(\Delta t\sub{p}\)=13.44 ms (from:\(t\sub{start}\)=3.98 ms,to:\(t\sub{end}\)=17.43 ms)

    Plasma parameters:

• Loop voltage:\(\overline{U\sub{loop}}\)\(\)=8.47 V; \(\max_{{\tau \in [discharge]}U\sub{loop}}\)=10.59 V; \(U\sub{breakdown}\)=0.00 V
• Toroidal magnetic field: \(\overline{B\sub{t}}\)=0.35 T; \(\max_{\tau \in [discharge]}B\sub{t}\)=0.48 T
• Plasma current: \(\overline{I\sub{p}}\)=0.77 kA; \(\max_{\tau \in [discharge]}I\sub{p}\)=0.98 kA; \(t\sub{Ip}\sup{max}\)=0.00 ms

Basic Diagnostics    

On stage diagnostics

Basic diagnostics Data flow:  Documentation:

Langmuir & Ball-pen probe Data flow:  Documentation:

Parameters:r_lp_tip='75',S_mode_lp='float',R_lp_div_osc='10e3',R_lp_div_nosc='1e6',R_bpp_div_osc='10e3',R_bpp_d

Mirnov coils @ Limiter Data flow:  Documentation:

Magnetohydrodynamic 16 mirnov coils ring Data flow:  Documentation:

Fast cameras Data flow:  Documentation:

Parameters:fr_ux100a=1200,height_ux100a=56,recrate_ux100a=40000,shotdur_ux100a=30,width_ux100a=1280,fr_ux100b=1

Motion detection 

 

N/A

South

North

Slow optical spectrometry Data flow:  Documentation:

Off stage diagnostics

Interferometry Data flow:  Documentation:

Double rake probe Data flow:  Documentation:

Parameters:r_first_tip=100,X_mod='111111111111',I_SilverBox=0

Scintillation probes Data flow:  Documentation:

Parameters:U_NIM_A1=600,U_NIM_A2=600,U_NIM_A3=600,U_NIM_A4=600

Strip detector Data flow:  Documentation:

Timepix detector Data flow:  Documentation:

Fast spectrometry Data flow:  Documentation:

Analysis

Name	Analysis results

Infrastructure

Chamber

Bt and Ecd ,

Parameters :U_Bt=950,t_Bt=0,O_Bt='CW',U_cd=400,t_cd=0,O_cd='CW'

Preionization

Parameters :S_device='HotCathode',SW_main='on',U_heater=100,U_accel=70

Working gas

Parameters :S_mode='U_v',S_gas='He',p_H=15,U_v=43.0

Position stabilization :

Parameters :main_switch='on',radial_switch='on',radial_waveform='1000,0;2000,-5;5000,0;6000,-20;30000,0',vertical_switch='on',vertical_waveform='1000,0;2000,-5;7000,-10;8000,-20;30000,0'

Acknowledgement

---

Thanks to the specific help

The tokamak GOLEM controll SW @