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Re: [Opal] wakefield from Green's function in OPAL-t

Chronological Thread 
  • From: Christof Metzger-Kraus <christof.j.kraus AT>
  • To: philippe.piot AT
  • Cc: Nicole R Neveu <nneveu AT>, opal <opal AT>
  • Subject: Re: [Opal] wakefield from Green's function in OPAL-t
  • Date: Thu, 9 Jul 2020 15:40:18 +0200
  • Authentication-results: localhost; iprev=pass ( smtp.remote-ip=; spf=pass; dkim=pass header.s=20161025 header.a=rsa-sha256; dmarc=pass

Hi Philippe,

I guess you mean this ticket (?). Unfortunately it is quite old and I won't have the time to implement it any time soon. I hope Nicole has all the information you need!

Best regards,

On Thu, Jul 9, 2020 at 2:33 PM Philippe Piot <philippe.piot AT> wrote:
Hi Nicole, 
  No, nobody replied to me but I saw Christof opened an issue and was playing with a Wakefield regression test so I suspect he is looking into this. I just wanted to implement the longitudinal and transverse wake, if you have a file handy I would be grateful if you could share it so can see if I am doing something wrong (I use the same adds format as elegant as mentioned in the user manual). 
  By the way, do you have an example of optimization setup for OPAL (I think you did many of the bunch length-emittance) but I cannot recall if you were using OPAL or the external optimizer you developed (I am interested in the internal OPAL optimizer)? 
  I hope all is well with you. All the best,  -- Philippe. 

On Thu, Jul 9, 2020 at 7:25 AM Nicole R Neveu <nneveu AT> wrote:

Hi Philip,


Did anyone get back to you on the wakefields?

I used them a while ago while at AWA, but  in version 1.9.

I can dig up those files….


I agree this needs some attention in the manual.






From: <opal-request AT> on behalf of Philippe Piot <philippe.piot AT>
Reply-To: "philippe.piot AT" <philippe.piot AT>
Date: Wednesday, June 24, 2020 at 6:30 AM
To: opal <opal AT>
Subject: [Opal] wakefield from Green's function in OPAL-t


Dear All,

  Could somebody share an example on the use of external sdds file to model the effet of wakefields in OPAL-t. I would like to account for both the longitudinal and transverse (dipole) wakefield -- I assume I have to use 2 WAKE elements with the  LONG-SHORT-RANGE, TRANSV-SHORT-RANGE or does the LONG-TRANSV-SHORT-RANGE enable the simultaneous modeling of both types of wake? Section 18 on wakefield does not have a lot of details. Thank you very much for your help. All the best, -- Philippe.

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