Search found 6 matches

by martin
16 Sep 2013, 10:09
Forum: Ring Tracking
Topic: train of bunches with different charge
Replies: 2
Views: 1796

Re: train of bunches with different charge

Dear Michael,

thank you for your reply. Right, I have also thought of doing that. I think it will do the trick for my purpose.

Best,
Martin
by martin
19 Aug 2013, 10:54
Forum: Ring Tracking
Topic: train of bunches with different charge
Replies: 2
Views: 1796

train of bunches with different charge

Hi Michael and others, I would like to use a train of bunches, each bunch represented by one macro particle but with different charge. Is that possible? I have created sdds files (to be used in sdds_beam), similar as in the example CBI. It has a parameter "Charge" for each page. Does it define the t...
by martin
14 Dec 2012, 07:14
Forum: Ring Tracking
Topic: many-turn tracking with time dependent modulations
Replies: 6
Views: 3740

Re: many-turn tracking with time dependent modulations

Dear Michael,

yes you are absolutly right! I misinterpreted the meaning of s. St is the quantity I wanted and it gives comparable results for both change_t=0 and 1. Thank you for your help!

Martin
by martin
13 Dec 2012, 10:36
Forum: Ring Tracking
Topic: many-turn tracking with time dependent modulations
Replies: 6
Views: 3740

Re: many-turn tracking with time dependent modulations

I attached the input files (it is a modification of the PAR/bunchLengthening example). And a plot of sigma_s of the tracking once with change_t set in the cavity and once without. It seems the black curve is the wrong one, is it not? The thing is, I'd like to look at the bunch length while applying ...
by martin
13 Dec 2012, 07:13
Forum: Ring Tracking
Topic: many-turn tracking with time dependent modulations
Replies: 6
Views: 3740

Re: many-turn tracking with time dependent modulations

Thanks for your replies. The problem I have occurs in an electron storage ring with synchroton radiation. The components are basically: a ring with 1st order matrix elements, a cavity (RFCA with change_t=0), and sychroton radiation: sr: sreffects, damping=1, qexcitation=1, losses=1 The result is tha...
by martin
12 Dec 2012, 06:57
Forum: Ring Tracking
Topic: many-turn tracking with time dependent modulations
Replies: 6
Views: 3740

many-turn tracking with time dependent modulations

Dear all, I intend to do many-turn ring-tracking with time dependent modulation of some elements. I run into this bug with numerical errors in the longitudinal position. The bug does not occur if I set change_t=1 in one of the cavities (RFCA). However I then have no time depenance and cannot use com...