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Re: [Opal] Question regarding traveling wave RF transverse deflecting cavity


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  • From: "Adelmann Andreas (PSI)" <andreas.adelmann AT psi.ch>
  • To: "Kim, Seongyeol" <seongyeol.kim AT anl.gov>
  • Cc: "opal AT lists.psi.ch" <opal AT lists.psi.ch>
  • Subject: Re: [Opal] Question regarding traveling wave RF transverse deflecting cavity
  • Date: Wed, 12 Jan 2022 21:52:42 +0000
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Hoi Seongyeol unfortunately I do not really understand what you mean. 

We currently do not have a “regression test” (as far as I know) of a transverse deflecting cavity. 


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On 10 Jan 2022, at 19:23, Kim, Seongyeol <seongyeol.kim AT anl.gov> wrote:

Dear all,

One more thing: Here, we tried to implement the traveling wave structure with separate components with 3Ddynamic type.
For the real part, we set the field to be [Re(E), Im(H)] and imaginary part to be [Im(E), Re(H)] using standing wave RFCavity element.

And, for the TDC (traveling wave cavity) element, we superimposed real and imaginary parts by setting the element like below: 
================================================================
TDC_Re:   RFCavity, L = Ltdc, VOLT = 1, ORIGIN = {0.0, 0.0, 0.05},
       ORIENTATION = {0.0, 0.0, 0.0}, TYPE = "STANDING", 
       FMAPFN = "DeflectorRe.T7", FREQ = 11700.0, LAG = tdcPhase;

TDC_Im:   RFCavity, L = Ltdc, VOLT = 1, ORIGIN = {0.0, 0.0, 0.05},
       ORIENTATION = {0.0, 0.0, 0.0}, TYPE = "STANDING", 
       FMAPFN = "DeflectorIm.T7", FREQ = 11700.0, LAG = tdcPhase-Pi/2; // +pi/2 or -pi/2 according to fieldmap data

TDC: Line = (TDC_Re, TDC_Im);
=================================================================

In addition to the setting we tried, I would like to get more confidence through the benchmarking data of traveling wave TDC example you provide.
I am looking forward to your message!

Best regards,
Seongyeol


보낸 사람: Kim, Seongyeol
보낸 날짜: 2022년 1월 10일 월요일 오후 12:08
받는 사람: opal AT lists.psi.ch <opal AT lists.psi.ch>
제목: Question regarding traveling wave RF transverse deflecting cavity
 
Dear all,

Hello, this is Seongyeol Kim, a postdoc with Argonne Wakefield Accelerator Facility in Argonne National Laboratory.
Currently, I am trying to perform formatting and implementing the traveling wave transverse deflecting cavity to the OPAL simulation.

I found that 3Ddynamic fieldtype for the OPAL simulation only includes real part of the fieldmap,
I think adding the imaginary part for implementing traveling wave structure is necessary, but I am not sure how to add it.
I was wondering if you could provide an example of the traveling wave transverse deflecting cavity. For me it will be a nice example and benchmarking data for our TDC in the OPAL simulation.

I am looking forward to hearing from you!
Best regards,
Seongyeol




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