The OPAL Discussion Forum

["Neveu, Nicole R" <nneveu AT slac.stanford.edu>]

Hi Andreas,

I was talking about what Christof mentioned.

Reading in phase information by providing real and imaginary parts of the field.

In the LCLS case, the TW structure is 3m long, and tapered.

i.e. the gradient is not constant along the length.

In the current TW set up, I’ll need to cut the field map into several chunks/elements with different gradients.

It would have been nice to provide the whole 3 m field at once with phase information.

It’s not urgent, but I’ll submit a feature request.

Thanks!

Nicole

On Jul 2, 2019, at 12:20 AM, Christof Metzger-Kraus <christof.j.kraus AT gmail.com> wrote:

Hi Andreas,

I guess that she means a field map which expects real and imaginary component in separate columns. This should be fairly simple to implement but it's not planned yet. 

Christof 

Adelmann Andreas (PSI) <andreas.adelmann AT psi.ch> schrieb am Di., 2. Juli 2019, 07:11:

On 1 Jul 2019, at 23:31, Neveu, Nicole R <nneveu AT slac.stanford.edu> wrote:

Ok, thanks for the confirmation.

Yes, I was looking at that page of the manual.

And no current plans to add a general field map reader / element, right?

At the moment there are no such plans. I am also not understand the “general field map reader”.

Do you mean a reader based on Fourier coefficients?

A 

Nicole

On Jul 1, 2019, at 1:41 PM, Adelmann Andreas (PSI) <andreas.adelmann AT psi.ch> wrote:

Hi Nicolle

On 1 Jul 2019, at 19:12, Neveu, Nicole R <nneveu AT slac.stanford.edu> wrote:

Hi all, 

I’m trying to model 3 m long traveling wave structures, and wanted to confirm something.

The field map should only represent 1 cell? And OPAL will repeat that cell?

Yess that’s correct and described in the Manual: Elements section https://gitlab.psi.ch/OPAL/Manual-2.0/wikis/elements at 1.16.

i.e. there’s no way to put in the field and phase information (real and imaginary)?

No I am afraid not

A

Thanks for the double check!

Nicole