Michael,
thank you very much for your reply. I do not understand why exponential decay of the trajectories leads to your expression. Can you give me a reference for the expression?
Thanks a lot!
Jan
Search found 13 matches
- 07 Apr 2017, 10:53
- Forum: Ring Tracking
- Topic: radiation damping from tracking
- Replies: 3
- Views: 4484
- 03 Apr 2017, 03:42
- Forum: Ring Tracking
- Topic: radiation damping from tracking
- Replies: 3
- Views: 4484
radiation damping from tracking
Hi everybody, for demonstration of synchrotron radiation effects I tracked a bunch of electrons with large initial energy spread and observed the longitudinal radiation damping. Then I determined the damping time from an exponential fit, but the value is 40-50% smaller than expected. Here is what I ...
- 15 Jun 2016, 03:24
- Forum: Ring Tracking
- Topic: pCentral and average of p
- Replies: 2
- Views: 4082
Re: pCentral and average of p
Dear Michael, the momentum offset was indeed caused by N_KICKS of CSBEND set to a too small value. Now the deviation is more than one order of magnitude smaller. It was no real effect, because it occurred everywhere around the ring with about the same value. If anybody else wants to check: I calcula...
- 14 Jun 2016, 09:42
- Forum: Ring Tracking
- Topic: pCentral and average of p
- Replies: 2
- Views: 4082
pCentral and average of p
Hello everybody, I am confused about an observation concerning p and pCentral for an electron bunch tracked in a ring including synchrotron radiation and rf cavities. I looked at the p column of WATCH elements in "coordinate" mode and recognized that its average over all turns is not equal to pCentr...
- 09 Feb 2016, 09:56
- Forum: General
- Topic: libSDDS and threads
- Replies: 5
- Views: 2800
Re: libSDDS and threads
Here is a very late feedback:
All functions listed in the first post work with threads without problems. I fixed the remaining issue described in the previous post by avoiding SDDS_InitializeInput errors (I check for file existence beforehand).
Thank you very much!
All functions listed in the first post work with threads without problems. I fixed the remaining issue described in the previous post by avoiding SDDS_InitializeInput errors (I check for file existence beforehand).
Thank you very much!
- 26 Nov 2015, 05:08
- Forum: General
- Topic: libSDDS and threads
- Replies: 5
- Views: 2800
Re: libSDDS and threads
Thank you very much for looking into this. The new version works much better, no SDDS errors! But sometimes (about 1 of 4 runs) the program terminates unexpectedly with "realloc(): invalid next size". I have not identified the causing function, but it could be related to the issue with error values ...
- 17 Nov 2015, 07:39
- Forum: General
- Topic: libSDDS and threads
- Replies: 5
- Views: 2800
libSDDS and threads
Hi, I am using libSDDS from the SDDSToolKit-devel RPM to read sdds files in c++ applications. It works very good - thanks again for the package. Now I tried to use it in a multi threading application and get various SDDS errors when reading the same file with multiple threads at the same time. Is th...
- 29 Oct 2015, 05:15
- Forum: Feature Requests
- Topic: C++ API
- Replies: 9
- Views: 20239
Re: C++ API
Thank you very much for the library and the demo.
- 27 Oct 2015, 11:15
- Forum: Feature Requests
- Topic: C++ API
- Replies: 9
- Views: 20239
Re: C++ API
I am on Ubuntu 15.10 64bit. Thank you.
- 27 Oct 2015, 03:06
- Forum: Feature Requests
- Topic: C++ API
- Replies: 9
- Views: 20239
Re: C++ API
Thank you for your replies. I would really appreciate SDDS3lib to be finished. The C API Michael mentions is SDDSlib? This would be a good starting point for me. Is there a documentation at least on how to compile it? The Makefiles seem to require a special directory structure and other projects rel...