Search found 1924 matches
- 28 Apr 2009, 08:36
- Forum: General
- Topic: SMOOTHDIST6
- Replies: 3
- Views: 2364
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: 7184
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: 2364
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: 1696
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...
- 20 Apr 2009, 09:09
- Forum: General
- Topic: a question about SDDS
- Replies: 1
- Views: 1777
Re: a question about SDDS
You can change the name of a column, parameter, or array using sddsconvert: sddsconvert input.sdds output.sdds -rename=column,oldName=newName You can also change many names at once using -editnames, e.g., sddsconvert input.sdds output.sdds -rename=column,*y,%/y/z/ would replace 'y' with 'z' in all c...
- 14 Apr 2009, 16:07
- Forum: Optimization and Matching
- Topic: Closed Orbit Correction Fails to Work
- Replies: 9
- Views: 13394
Re: Closed Orbit Correction Fails to Work
Ray, The problem seems to be that you have multiple horizontal correctors between some monitors, which makes the response matrix nearly singular. In the "NoWork" files, there is one less monitor in each plane that is "useable" (i.e., downstream of a corrector). Somehow that makes the matrix bad enou...
- 14 Apr 2009, 14:03
- Forum: General
- Topic: MONI question - beam position monitor
- Replies: 2
- Views: 2153
Re: MONI question - beam position monitor
In elegant, the monitor readout is the beam position at the end of the element, not the center.
Normally, I use zero-length monitors to avoid confusion.
--Michael
Normally, I use zero-length monitors to avoid confusion.
--Michael
- 13 Apr 2009, 11:54
- Forum: Bugs
- Topic: Orbit response matrix for BEND.FSE
- Replies: 2
- Views: 5602
Re: Orbit response matrix for BEND.FSE
Alexey, This is an interesting result. I think the problem is that for orbit response matrix computation, elegant assumes that the kick delivered by the element occurs at the end of the element. This isn't exactly right, but is usually "good enough." I'll have to think about how to solve this. There...
- 10 Apr 2009, 17:33
- Forum: General
- Topic: Microtron Dipole Magnet
- Replies: 1
- Views: 1995
Re: Microtron Dipole Magnet
Serkan, You can simulate this using SBEN or CSBEND elements. However, you'll need to manually compute the arc length for each pass. To elegant, this is just a dipole with very large edge angles: E1=E2=(pi-theta)/2, where theta>0 is the bending angle. If the dipole has significant fringe fields, you ...
- 23 Mar 2009, 12:01
- Forum: Optimization and Matching
- Topic: Can elegant perform dynamic Aperture optimization ?
- Replies: 18
- Views: 25461
Re: Can elegant perform dynamic Aperture optimization ?
Shancai, Attached are some files to demonstrate performing a tune scan to optimize dynamic aperture. The scripts work on linux, but may require modification to work on Windows. Also attached is a plot showing what the result looks like. A word of caution: this analyzes only the dynamic aperture. The...