CEA Codes forum

Dear all

I plan to do the error study for DTL at these days so I check the user manual and I see one sentence about cavity error command.

At the part of cavity error explanation it was written like attached photo.
It says that 'Warning the DTL only concerns by the field errors'.

What is the exact meaning of the sentence?
Does it means that dx, dy, dz, rotation angle x, rotation angle y errors are ignored at the error study?
Additionally, I can not check the longitudinal displacement error at the error study setup.
Do I need to set other setting for longitudinal displacement error?
The attached photo 2 shows the screenshot.
Best regards

Dear Sir,

This sentence concerns only the specific command PHASE_ERROR_TO_SYNC_PHASE. In the context of a DTL you don't normally have to use it and all the errors indicated, such as displacements, are taken into account.

So in image#2 select all the errors you want to apply and use the ERROR_CAV_XXX_XXX commands to define their types and amplitudes.

Regards,

Didier

Thanks for the kind reply

However, one question for the error study is remained.
When we see the second photo, I mean that the 2.png, we can see that I can not check the Z displacement error setup.
If I want to do the error study with Z displacement error, should I do other setting at the TRACEWIN?

Best regards
SeokHo

Dear SeokHo,

Z displacement has never been implemented and will probably never be because it is rather complex to develop and ultimately has a negligible impact compared to other types of error.

Regards,

Didier

Dear Didier

Thanks Dr.Didier, I understand the situation.

Regards
SeokHo