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particle emission from a fixed point?
Posted 23.10.2013, 05:17 GMT-4 Charged Particle Tracing 2 Replies
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Hello,
I would like to make a charged particle tracing simulation. It seems to me that I can only specify an inlet at the boundary of a domain, i.e. of finite extension. Is it possible to specify particle emission from a single point?
Another question: is it possible to emit particles according to 2D gaussian distributions (Twiss ellipses) in the (x,x') and (y,y') phase spaces? (x and y are the transverse coordinates to the propagation direction, and x' and y' are their derivatives w.r.t. the z coordinate). Do I need to do it using the API?
Thank you
Daniel
I would like to make a charged particle tracing simulation. It seems to me that I can only specify an inlet at the boundary of a domain, i.e. of finite extension. Is it possible to specify particle emission from a single point?
Another question: is it possible to emit particles according to 2D gaussian distributions (Twiss ellipses) in the (x,x') and (y,y') phase spaces? (x and y are the transverse coordinates to the propagation direction, and x' and y' are their derivatives w.r.t. the z coordinate). Do I need to do it using the API?
Thank you
Daniel
2 Replies Last Post 06.11.2013, 14:15 GMT-5
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Posted:
1 decade ago
Dear Daniel,
Try the feature "Release from Grid" where you can define initial coordinates.
Regarding the release distribution you could define the initial particle velocity as function of emission angles, which could be expressed (as far as I remember) by the particle index and the predefined random number generator (uniform or Gaussian distribution types).
For further details on the specific implementation feel free to contact our Particle Tracing experts via technical support:
www.ch.comsol.com/support
Best regards,
Zoran
Try the feature "Release from Grid" where you can define initial coordinates.
Regarding the release distribution you could define the initial particle velocity as function of emission angles, which could be expressed (as far as I remember) by the particle index and the predefined random number generator (uniform or Gaussian distribution types).
For further details on the specific implementation feel free to contact our Particle Tracing experts via technical support:
www.ch.comsol.com/support
Best regards,
Zoran
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Posted:
1 decade ago
Hello,
I have tried this, and specified a point which is surely within the simulated volume. In this case I do not see any particle trajectories - I am no expert yet to be able to see behind the scenes and figure out why, and what went wrong. Still trying to figure out.
Thank you
Daniel
I have tried this, and specified a point which is surely within the simulated volume. In this case I do not see any particle trajectories - I am no expert yet to be able to see behind the scenes and figure out why, and what went wrong. Still trying to figure out.
Thank you
Daniel