Search found 4 matches

by Kruschinski
20 Jun 2023, 06:48
Forum: Ring Tracking
Topic: Symplecticity in low-alpha tracking
Replies: 7
Views: 2932

Re: Symplecticity in low-alpha tracking

Good to know Michael, I agree the number of slices should be adequate. Thanks for elaborating and many thanks again for your help!

Best regards,
Arnold
by Kruschinski
19 Jun 2023, 02:25
Forum: Ring Tracking
Topic: Symplecticity in low-alpha tracking
Replies: 7
Views: 2932

Re: Symplecticity in low-alpha tracking

Michael, thank you so much for your help! All the issues are solved now. If I use the 6th order integrator with REFERENCE_CORRECTION in the bends the result is dramatically improved, only the spurious phase jumps for long term tracking remain. These I can remove by using CHANGE_T. I am a bit unsure ...
by Kruschinski
12 Jun 2023, 09:59
Forum: Ring Tracking
Topic: Symplecticity in low-alpha tracking
Replies: 7
Views: 2932

Re: Symplecticity in low-alpha tracking

Dear Michael, thank you, I did not realize the different sign in the longitudinal coordinate, with the changed matrix the symplecticity check now gives a positive result. Since my original post I have made a few more runs investigating the momentum offset. I have reproduced the behavior for differen...
by Kruschinski
21 Apr 2023, 04:32
Forum: Ring Tracking
Topic: Symplecticity in low-alpha tracking
Replies: 7
Views: 2932

Symplecticity in low-alpha tracking

Hello everyone, We would like to do some tracking investigations in a low-alpha lattice involving alpha buckets. But right from the start I see some very strange behavior in the longitudinal phase space. It is still a regular RF bucket, but the fixed point nevertheless has a momentum offset, and the...