INSTANTANEOUS EVENTS & ACTUATORS

Pellet

At the top level of the workflow you can configure times for pellet injection

• right click on the box INSTANTANEOUS EVENTS & ACTUATORS
• select Configure actor to edit settings
• Select Pellet_injection equal ON if you like to use pellet in your simulation
• Select mode of operation:
  • Times_for_pellets equals specific - pellets will be shut at exact times specified in array times_pellet
  • Times_for_pellets equals frequency – pellets will be shut from tstart_pellet until tend_pellet with a frequency_pellet
• Commit

Parameters of individual pellet need to be configured through the code_parameters of the PELLET actor. To access it go to Outline on the right upper corner and open the following:

• right click on the actor PELLET
• select Configure actor
• click Edit Code Parameters
• edit parameters and click save and exit
• Commit

amn – atomic mass number: array of elements separated by space (1:nelements) [-]

zn – nuclear charge: array of elements separated by space (1:nelements) [-]

fraction – fraction of each element in the pellet, based on the number of atoms: array of elements separated by space (1:nelements) [-]

rpell – radius of the pellet [m]

vpell – velocity of the pellet [m/s]

rcloud – radius of the pellet cloud [m], radial extension of the cloud = 2*rp0

lcloud – length of the pellet cloud along the field line [m]

Tcloud – temperature of the pellet cloud [eV]

Pellet path is specified by two points, for which R and Z coordinated should be specified

R – R coordinates of the pivot and second points of the pellet path, separated by space [m]

Z – Z coordinates of the pivot and second points of the pellet path, separated by space [m]

Control switches allow to activate:

• drifts - YES - will activate radial displacement of deposition profile, same for all path points
• cooling - YES - will activate cooling of the other side of the plasma due to parallel heat transport (essential for large pellets, which might cross the same flux surface twice)
• JINTRAC - YES - will provide temperature reduction consistent with the model used in JETTO

Sawtooth

At the top level of the workflow you can switch ON/OFF possible MHD events

• right click on the box INSTANTANEOUS EVENTS & ACTUATORS
• select Configure actor to edit settings
• Select SAWTOOTHON if you like to use them in your simulation
• Commit

Actuators

At the top level of the workflow you can switch ON/OFF actuator for runaways

• right click on the box INSTANTANEOUS EVENTS & ACTUATORS
• select Configure actor to edit settings
• Select actuator_runawaysON if you like to use them in your simulation
• Commit