F Giordano B Salvant N Biancacci L Teofili and C Zannini Many thanks to G Rumolo and the CST team Outline Background Two beam power loss computation with CST Filling scheme generator script introduction ID: 793496
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Slide1
Two beam power loss:how to compute it
F. Giordano, B.
Salvant
, N.
Biancacci
, L.
Teofili
and C.
Zannini
Many thanks to:
G.
Rumolo
and the CST team.
Slide2Outline
Background
Two beam power loss computation with CST
Filling scheme generator: script introduction
Examples
Conclusion
Slide31. Background
The CST team presented us the possibility to compute the power loss directly in CST.
CST has been benchmarked in computing power loss for the one beam case (
https://indico.cern.ch/event/766031/
F. Giordano).CST is being benchmarked in computing wakepotential for the two beams case (see L. Teofili talk)Let’s see how to use it to compute the power loss of two beam
Slide42. Two beam power loss computing with CST
2.1 Define two particle beams
2.2 Enable the power loss computation
2.3 Analyse the results
Slide52.1 Define two particle beam
Right click on particle beam and add a new particle beam
Change the global beam direction on “-z”
Eventually change the shape
See next section (
Filling scheme generator: script introduction)Set the ”Charge” accordingly to the value given by the script generator
Slide62.2 Enable the power loss computation
Define a structure with a lossy material
Click on Setup Solver
Open the “Specials..” menu
Navigate into “Material”
Tick “time power metal losses (1D)”
Run the simulation
Slide7Go to:
Click on “Loss in Metals”
2.3 Analyse the results
Slide83. Filling scheme generator: script introduction
CST allows to change the shape of the beam
arbitrary filling scheme can be used.
It requires a .txt files
A script is ready to use to directly compute various filling scheme
https://swan005.cern.ch/user/giordanf/notebooks/SWAN_projects/CST_filling_scheme_generator/CST_filling_scheme_generator.ipynb
Slide93. Filling scheme generator: script introduction
Slide103. Filling scheme generator: script introduction
Slide113. Filling scheme generator: script introduction
Slide123. Filling scheme generator: script introduction
Slide134. Examples
4.1 Two delayed single beam
4.2 Two beams of 20 bunches
Slide144.1 Two delayed single beam
Beam 1
Beam 2
Script output
Input for CST
Slide154.1 Two delayed single beam
Wakepotential
Energy
Beam 1
Beam 2
Slide164.1 Two delayed single beam
Power loss
Beam 1
Beam 2
Slide174.2 Two beams of 20 bunches
Arbitrary filling scheme generated with the script
If more than one bunch only the power is given without any information on the wake.
Power loss
Slide18Conclusion
CST allows us to compute the power loss of any kind of fill provided the filling scheme
The filling scheme can be produced using the given script (see Section 3)
CST can compute the power loss also in the case of two beams with any filling scheme
If the filling scheme has more than one bunch CST does not give any information on the wake, the power loss is always given
Slide19Thanks for the attention!