Difference in transverse momentum acceptance plots for the same lattice file

Moderators: cyao, michael_borland

Post Reply
ranamonikaa
Posts: 12
Joined: 07 Jul 2022, 01:07

Difference in transverse momentum acceptance plots for the same lattice file

Post by ranamonikaa » 16 Mar 2023, 08:35

Hi Michael
I am getting different momentum acceptance plots for the same lattice file. The only difference in the two lattice files is that have used rf at two places (highlighted in green) in one lattice file (giving the expected momentum acceptance plot) and just once in the other lattice file (deltaPositive plot is different in this case) . I feel using it just once should give the correct plot. Can you please tell me why this difference is there. I have attached lte and ele files and the plots for your reference.
Thank you.
Attachments
A.ele
(1.53 KiB) Downloaded 51 times
A2.lte
(4.71 KiB) Downloaded 45 times
A1.lte
(4.79 KiB) Downloaded 42 times

ranamonikaa
Posts: 12
Joined: 07 Jul 2022, 01:07

Re: Difference in transverse momentum acceptance plots for the same lattice file

Post by ranamonikaa » 16 Mar 2023, 08:36

Here are the plots for the two cases.
Attachments
A2 plot.png
A1 plot.png

michael_borland
Posts: 1927
Joined: 19 May 2008, 09:33
Location: Argonne National Laboratory
Contact:

Re: Difference in transverse momentum acceptance plots for the same lattice file

Post by michael_borland » 27 Mar 2023, 11:06

I think the problem is that you didn't change the voltage on the cavities in the two-cavity run. The voltage needs to be half as much per cavity when you have two of them.

--Michael

ranamonikaa
Posts: 12
Joined: 07 Jul 2022, 01:07

Re: Difference in transverse momentum acceptance plots for the same lattice file

Post by ranamonikaa » 30 Mar 2023, 01:51

Yes then it gives the same plot. Thanks :)

Post Reply