Takahiro,
I think the source of the confusion is that the output files from CSRCSBEND shows the change in Gamma for the most recent slice of the dipole. Therefore, if you have N_KICKS=100, you'd see DeltaGamma of about 1% of what you might expect.
--Michael
Search found 1930 matches
- 12 Jun 2009, 10:13
- Forum: Linac Tracking
- Topic: DeltaGamma in CSRCSBEND output
- Replies: 2
- Views: 6194
- 27 May 2009, 13:09
- Forum: Linac Tracking
- Topic: emittances in elegant
- Replies: 2
- Views: 5660
Re: emittances in elegant
Pete, My guess about the source of the vertical emittance growth is chromatic aberrations from the quadrupoles. The emittance growth scales like sigma_y^2*sigma_delta/f, where f is the focal length. So better control of the vertical beamsize at strong quads will help. Elegant computes emittances as ...
- 22 May 2009, 15:49
- Forum: Ring Tracking
- Topic: What's wrong with my kicker setting?
- Replies: 4
- Views: 8736
Re: What's wrong with my kicker setting?
Shancai, I don't think there is anything wrong with your kicker settings. The problem is that you have strong sextupoles inside the bump. As the kickers fire, they kick the stored beam a t=0, t=0.22 us, t=0.44us, etc. However, the bump is matched only for t=0.5 us (full amplitude), because of the se...
- 22 May 2009, 15:34
- Forum: General
- Topic: How to change ranges in sddsplot
- Replies: 2
- Views: 2257
Re: How to change ranges in sddsplot
If you just want to specify fixed scales, try the -scales option, e.g.,
sddsplot -column=s,betax -scales=0,0,0,30
would plot betax between 0 and 30, but autoscale on y.
Let me know if this isn't why you are trying to do.
--Michael
sddsplot -column=s,betax -scales=0,0,0,30
would plot betax between 0 and 30, but autoscale on y.
Let me know if this isn't why you are trying to do.
--Michael
- 07 May 2009, 09:00
- Forum: General
- Topic: sddsplot fiddling
- Replies: 2
- Views: 2121
Re: sddsplot fiddling
Pete,
Try this:
sddsplot -column=s,LinearDensity BC2-MAG-DIPOLE-04.CSR -split=pages -graph=line,vary -order=spectral
--Michael
Try this:
sddsplot -column=s,LinearDensity BC2-MAG-DIPOLE-04.CSR -split=pages -graph=line,vary -order=spectral
--Michael
- 29 Apr 2009, 13:59
- Forum: Dynamic Aperture
- Topic: Input of the higher order multipoles
- Replies: 2
- Views: 18100
Re: Input of the higher order multipoles
Weiming, You can do this with load_parameters. Just give a file with a string column called ParameterStringValue instead of the usual ParameterValue column. An even easier way is using alter_elements, e.g., &alter_elements name=*, type=KQUAD, item=systematic_multipoles, string_value=<filename> &end ...
- 28 Apr 2009, 08:36
- Forum: General
- Topic: SMOOTHDIST6
- Replies: 3
- Views: 2376
Re: SMOOTHDIST6
James, Just a word on the use of smoothDist6: it is best used for determining the microbunching gain curve of the system. Because of the algorithm used, some of the detailed correlations among various phase space coordinates will get lost. If you just want to increase the number of particles without...
- 24 Apr 2009, 08:38
- Forum: Ring Tracking
- Topic: Malign element
- Replies: 7
- Views: 7202
Re: Malign element
Weiming, This is a somewhat confusing issue. Basically, you shouldn't set ON_PASS to any value for this simulation. Leave it at the default value of -1. Elegant interprets this as meaning, for matrix and twiss parameter computations, that you want to simulate a beam that is permanently displaced to ...
- 23 Apr 2009, 20:18
- Forum: General
- Topic: SMOOTHDIST6
- Replies: 3
- Views: 2376
Re: SMOOTHDIST6
James,
It should be part of the installation. Try typing "smoothDist6s". If not, you can try install the attached script.
--Michael
It should be part of the installation. Try typing "smoothDist6s". If not, you can try install the attached script.
--Michael
- 21 Apr 2009, 14:25
- Forum: General
- Topic: Energy Mismatch
- Replies: 1
- Views: 1708
Re: Energy Mismatch
Chris, This can be done with either an ENERGY or a MALIGN element. Which you use is just a matter of convenience. Using the MALIGN element, you'd set DP equal to the fractional momentum offset of the beam relative to the design momentum. Using the ENERGY element, you can redefine the reference momen...