The OPAL Discussion Forum

["Power, John" <JP AT anl.gov>]

Hi Andreas,
>> 4. If you have any other examples related to LINAC modules besides the  
>> AWA RF photo injector, we would appreciate if you could share them.
>There are more coming up in the next few weeks, but what is missing for your 
>case?
If I could chime in with my 2 cents, it might be nice to have an example of a 
LINAC using traveling wave-accelerating cavities.  AWA cavities are all 
standing wave.
Cheers, John





-----Original Message-----
From: opal-request AT lists.psi.ch <opal-request AT lists.psi.ch> On Behalf Of 
Adelmann Andreas
Sent: Wednesday, October 11, 2023 1:16 PM
To: Galo Gallardo <ggallardo AT hi-iberia.es>
Cc: opal AT lists.psi.ch
Subject: Re: [Opal] Some questions regarding OPAL


> Dear OPAL members,
> 
> As you already know, we would like to use OPAL-t in order to simulate 
> deuteron bunches in the different modules of the IFMIF-DONES linac. For our 
> problem, we basically need to get final particle distribution at the end of 
> the lattice and the energy of the bunch.
> 
> So far, I have gone through the user's guide, the AWA RFPhotoInjector 
> example and PyOPALTools notebooks. However, I still have a few questions 
> (and pretty sure more will come along the way):
> 
> 1. Regarding the particles distribution at the end, is it just provided in 
> the RFphotoinjector.h5 that was generated after the simulation? I was 
> checking it with pyOPALTools (the x and y variables).
> 

Yes normally we store the last time-step per default.  


> 2. Regarding the .T7 files, are these mandatory?  Poisson Superfish is 
> required too?  Is there any guide related to the generation of such files 
> beyond whats in the user's guide?
> 

In case you have RF structures T7 files are one way of getting the fields 
into OPAL. Please consult the Superfish manual on how to create these files.


> 3. After running the simulation, a folder called /data/ is also created, 
> with some files in it. What are these files used for? I have not seen 
> examples of them in the pyOPALTools notebooks.
> 

No the pyOPALTools usually only take .stat and .h5 files. Please view the 
stuff in the data directory as advanced I am sure you do not need to consider 
them now.

> 4. If you have any other examples related to LINAC modules besides the  AWA 
> RF photo injector, we would appreciate if you could share them.
> 

There are more coming up in the next few weeks, but what is missing for your 
case?


> 5. Do you know anyone within IFMIF-DONES that has knowledge in OPAL-t? 
> Besides Iván Podadera, he only used OPAL-cycl.
> 
No unfortunately not.

Cheers A 




> That would be all for now. Thanks for your attention!
> 
> Best regards,
> 
> Galo Gallardo