INSTANTANEOUS EVENTS

PELLET

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

• right click on the box ‘INSTANTANEOUS EVENTS’
• select ‘Configure actor’ to edit settings
• Select Pellet_injection ‘ON’ if you like to use pellet in your simulation
• Select mode of operation: ‘specific’ - pellets will be shut at specific times, you also need to specify array ‘times_pellet’
  • ‘specific’ - pellets will be shut at exact times specified in array ‘times_pellet’
  • ‘frequency’ – pellets will be shut from ‘tstart_pellet’ until ‘tend_pellet’ with a ’frequency_pellet’
• ‘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 icode_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

MHD

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

• right click on the box ‘INSTANTANEOUS EVENTS’
• select ‘Configure actor’ to edit settings
• Select SAWTOOTH ‘ON’ if you like to use them in your simulation
• Commit