Search found 13 matches

by Saroj_Jena
10 Feb 2022, 05:40
Forum: Ring Tracking
Topic: problem in inserting quadrupole strength error
Replies: 2
Views: 2243

Re: problem in inserting quadrupole strength error

Dear Michael, Thanks a lot. Now I got where I was doing mistake. I tried with & bunched beam & end , & track & end . Even though it was not plotting betabeat. But it now gives betabeat because of "output_at_each_step = 1" in the twiss_output module, which I missed. Thanks once again. With regards Sa...
by Saroj_Jena
04 Feb 2022, 00:22
Forum: Ring Tracking
Topic: problem in inserting quadrupole strength error
Replies: 2
Views: 2243

problem in inserting quadrupole strength error

Dear Michel, I am puzzeled with a somewhat basic problem. i.e. when I provide quadrupole strength error in quadrupole, it does not gives any change in beta in twiss output file, not producing any beta beat. I feel my way of input is not applying the error. please tell me where I may be doing mistake...
by Saroj_Jena
06 Dec 2021, 05:29
Forum: Ring Tracking
Topic: Beam ion interaction using IONEFFECTS element
Replies: 16
Views: 6010

Re: Beam ion interaction using IONEFFECTS element

Saroj, In plotting the ion density with the scripts, it does not plot the ion density since beginning. Please find the figure in the attachment. The script plots the ion density at the end of each turn. So for your case, it looks like the density is near its maximum after a single turn. I am using ...
by Saroj_Jena
29 Nov 2021, 00:04
Forum: Ring Tracking
Topic: Beam ion interaction using IONEFFECTS element
Replies: 16
Views: 6010

Re: Beam ion interaction using IONEFFECTS element

Helo Joe, I plot the instability amplitude as per the script you have mentioned in previous reply. The instablity amplitude increases beyond 1 or 2 times beam size, which is not following the theoritical prediction perhaps. Please find the figure of instability amplitude vs turn which shows it incre...
by Saroj_Jena
18 Nov 2021, 00:37
Forum: Ring Tracking
Topic: Beam ion interaction using IONEFFECTS element
Replies: 16
Views: 6010

Re: Beam ion interaction using IONEFFECTS element

Dear Joe, Thanks a lot for answering my querries. In plotting the ion density with the scripts, it does not plot the ion density since beginning. Please find the figure in the attachment. I am using the latest version 2021.3.0 . I have checked with fractionional intensities in generating bunch train...
by Saroj_Jena
08 Nov 2021, 23:11
Forum: Ring Tracking
Topic: Beam ion interaction using IONEFFECTS element
Replies: 16
Views: 6010

Beam ion interaction using IONEFFECTS element

I am studying beam –ion instability for a ultra-low emittance storage ring and I am using Pelegant recent version (2021.3) for this. I have referred your article “Modeling ion effects for the Argonne Advanced Photon Source upgrade”, PRAB 2019. I tried with example file of APS U. I have few query reg...
by Saroj_Jena
14 Sep 2021, 01:57
Forum: General
Topic: Ion effects in storage ring
Replies: 2
Views: 2561

Re: Ion effects in storage ring

prpM.txt Dear Michael, Thanks for fixing the sdds file. And with that file, the ioneffects command run nicely. However, I couldn't understand the first part, i.e. the procedure to fix the file. I convert the prprofileMore.sdds to plain data with command plaindata2sdds and got one text file which is...
by Saroj_Jena
30 Aug 2021, 07:30
Forum: General
Topic: Ion effects in storage ring
Replies: 2
Views: 2561

Ion effects in storage ring

I am studing the beam ion interaction for a high brightness storage ring using IONEFFECTS module of ELEGANT version 2020.5. I am facing the errors of job aborted. I couldn't understand why it happens. I tried by reducing number of turns to be tracked and no. of macro particles, no. of particles in a...
by Saroj_Jena
16 Apr 2021, 01:15
Forum: Ring Tracking
Topic: deflection_map of BUMPER
Replies: 3
Views: 4619

Re: deflection_map of BUMPER

Dear Michael I am studying the beam injection using a nonlinear kicker (NLK). Is there any provision to input deflection vs x directly. I generate a profile for deflection angle vs x for the NLK in which beam would experience 0.7 mrad kick at -4.9 mm. After going through the previously answered simi...
by Saroj_Jena
06 Dec 2020, 23:15
Forum: General
Topic: Injection optimization
Replies: 6
Views: 5502

Re: Injection optimization

Actually I was using elegant version 2019.1.1, in which it was giving error. Now I used latest version 2020.4 in which the optimization using nLost is working fine.

Thanks and regards
Saroj Jena