Elegant users forum

Hi, In my opinion, it is very difficult to identify the right tune in every case, especially when there is coupling and lattice errors. The highest peak of spectrum does not mean it is the tune. In the attachment, is the spectrum of x and y coordinate, 2048 turns, and the initial amplitude of x is t...

Michael,

I woulkd like this to be automatic, since it is a common job people tracking 200 turns, with 2-3 watching elements. 60sec verses 3 sec is too long for a impatient person like me.
But not so ctirical, since the recipe you gave works very well.

Lingyun

Sorry, I forgot to comment out the junk pieces. Thanks Michael: The inhibit_fsync=1 does help! lyyang@lyyang-desktop:~/devel$ time elegant track.ele > /dev/null real 0m2.749s user 0m2.730s sys 0m0.010s lyyang@lyyang-desktop:~/devel$ time elegant track.ele > /dev/null real 0m59.292s user 0m2.990s sys...

Hi All, When I use 2-3 watch to record the beam position, I found the tracking is significantly slower, the data is only for 200 turns, should not be a problem, I have set output_at_each_step=0. Is there any other options to control this I may not set it right ? Does anyone have similar experience ?...

Michael,

Thanks for this quick fix, I didn't build from source code, so the post process would be a best solution for me now.

Lingyun

Hi Michael,

Thanks for looking at this problem.

Here are the lattice file and kickmap.


Lingyun

Hi, I got a large DA, with a set of sextupole, but found that during the tracking of "find_aperture" all particles are lost. Then the (x,y)=(+/-1, +/-1) are the default one ? the Area=2 m^2. are they supposed to be zero ? Thanks Here are the ouput: lyyang@debian:~/devel/nsls2/trunk/optim$ sddsprinto...